Pomi

Principles of Measurement (International) For full treatment of saying JUNE 1979 Published by RICS Business Services Limited, a on the whole testifyed subsidiary of The Royal Institution of Chartered Surveyors, under the RICS Books imprint, Surveyor judicature Westwood Business Park Coventry, CV4 8JE UK No responsibility for loss occasioned to all somebody acting or refraining from action as a result of whatsoever material embroild in this everywheretation can be veritable by the authors, publisher or The Royal Institution of Chartered Surveyors.The views express and the conclusions drawn in this book are those of the authors. ISBN 0 85406 108 8 original Edition 1979 Reprinted 1988, 1991, 1994, 2001, 2002 and 2004 RICS 1988. Copyright in all or disrupt of this publication rests with the RICS, and save by prior consent of the RICS, no part or parts of this publication shall be reproduced in any(prenominal) form or by any instrument electronic, mechanical, photocopyi ng, recording or otherwise, now cognise or to be devised. Printed by Q3 Print, LoughboroughForeword The use of bills of quantities is a well-established direction of enabling the financial control and management of building whole kit and boodle. The key to the achievement of the use of bills of quantities is a clear understanding by all parties to the pore of what is let ind, or excluded, in the standard. It is this that gives rise to the need for clearly defined stock(a) manners of amount. Since these principles of measurement were first issued in 1979, many countries have developed their ingest more comminuted standard methods.A recent survey of its internationalist membership carried out for the RICS Construction faculty by the Building greet Information Service (BCIS) identified that 14 of the 32 responding countries had their own method of measurement. However, the Principles of Measurement (International) (POMI) were still being used in about one-half of the cou ntries and are still widely used on international adjures. on that point has been a trend in the UK and elsewhere to move outside from measurement- storyd procurement, laissez passer the responsibility for measuring the building mesh down the planning strand to the thin outor or sub-contractor.However, research commissioned by the Construction Faculty showed that where bills of quantities were non provided as part of the procurement process, 95% of contractors would undertake their own measurement, with the majority of this carried out in ossification with the trustworthy Standard method of Measurement (SMM). at that place is no doubt that the proliferation of procurement practices will continue. However, in circumstances in which thither is a degree of human body proof before the contractor is appointed, measurement-based procurement will still be allow for.Furthermore, where design decisions are being passed down the supply chain, measurement should be underinterpre ted at the level at which the design is carried out, in order to remove the quest for duplication. It is in the interests of the industry as a whole, including its clients, that measurement is carried out consistently. There is therefore a continued need for standard methods of measurement and, by implication, a continued need for measurement skills. These principles require a detailed specification and tender drawings to be provided.RICS recognises that circumstances vary from country to country, and from contract to contract, and that the principles therefore need to be flexible in order to go for variations in practice and techniques. Any comments on the principles should be sent to the RICS Construction Faculty, at 12 Great George Street, Parliament Square, London, SW1P 3AD. The principles are also accessible in French, German and Arabic. RICS is grateful to the original authors Michael Rainbird, Alan Charter, James Diebel, Derek Lawrence and Michael Pagulatos. Simon Cash ho t seat RICS Construction Faculty December 2003 Contents sectionalisation GP world-wide PRINCIPLES GP1 Principles of measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GP2 Bills of quantities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 GP3 Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GP4 Items to be fully comprehensive GP5 Description of tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2 GP6 die to be put to death by a specialist nominative by the employer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 GP7 Goods, materials or run to be provided by a merchant or tradesman nominated by the employer . . . . . . . . . . . . . . . . . .2 GP8 piece of bring in to be execute by a disposal or public pledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 GP9 Day indus attempt embed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2/3 GPI0 Contingencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 theatrical role A GENERAL REQUIREMENTS A1 Conditions of contract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 A2 judicial admission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 A3 Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 A4 Contractors administrative arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 A5 Constructional plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 A6 Employers facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 A7 Contractors facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 A8 unpredictable whole kit and caboodle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 A9 Sundry events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 particle B SITE WORK B1 commit exploration chiefly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 B2 Trial holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 B3 Boreholes (including pumping test wells) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 B4 identify preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 B5 Demolitions and alterations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 B6 shore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 B7 Underpinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 B8 Earth kit and boodle generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 B9 slam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 B10 Dredging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 B11 governance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 B12 Filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 B13 Piling generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 B14 Driven atomic pile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 B15 Bored spate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 B16 yellow journalism deal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 B17 Performance designed piling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 B18 test piling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 B19 thermionic valve enfeebleage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 B20 sidewalk and go up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 B21 Fencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 B22 grace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 B23 line arrive at . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 B24 turn over shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 B25 Tunnel linings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 B26 Tunnel animation and stabilisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 partitioning C CONCRETE WORK C1 primarily . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 C2 Poured concrete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 C3 backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 C4 Shuttering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 C5 Precast concrete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 C6 Prestressed concrete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 C7 Sundries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10/11 SECTION D MASONRY D1 chiefly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 D2 Walls and piers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 D3 Sills, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 04 reenforcement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 D5 Sundries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 SECTION E METALWORK E1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 E2 geomorphological admixturework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11/12 E3 Non structural meta lwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SECTION F WOODWORK F1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 F2 morphologic timbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 F3 Boarding and flooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 F4 evidence and battens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 F5 F6 F7 F8 F9 F10 Framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Finishings and fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12/13 Composlte items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Sundry items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Metalwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Ironmongery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 SECTION G THERMAL AND moisture PROTECTION G1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 G2 Coverings and linings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 G3 Damp-proof courses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 G4 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 SECTION H DOORS AND WINDOWS H1 Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 H2 Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 H3 Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 H4 Ironmongery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 H5 Glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 H6 spare glazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 SECTION J FINISHES J1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 J2 Back accounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 J3 Finishings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 J4 Sundries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 J5 hang up ceilings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 J6 Decorations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 J7 Signwriting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 SECTION K ACCESSORIES K1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 K2 Partitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 SECTION L EQUIPMENT L1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 SECTION M FURNISHINGS M1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 M2 Curtain jumper lead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 SECTION N SPECIAL CONSTRUCTION N1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 N2 Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 N3 Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 SECTION P CONVEYING SYSTEMS P1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 P2 Sundries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 P3 Work consequent to conveying systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 SECTION Q MECHANICAL ENGINEERING INSTALLATIONS Q1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Q2 tube and gutterwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Q3 Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Q4 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Q5 Automatic controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Q6 Connections to supply mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Q7 Insulation, including linings and preventive coverings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Q8 Sundries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Q9 Work incidental to mechanical engineering installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SECTION R ELECTRICAL ENGINEERING INSTALLATIONS R1 Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 R2 Main circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 R3 Sub-main circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 R4 Final sub-circuits and auxiliary installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 R5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 R6 Control gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 R7 Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 R8 Connections to supply mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 R9 Sundries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 R10 Work incidental to electrical engineering installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 APPENDIX Amendments to principles of measurement 1 SECTION GP GE NERAL PRINCIPLES GP1 Principles of measurement GP1. 1 Principles of measurement These principles of measurement provide a uniform basis for measuring bills of quantities for works of construction. More detailed reading than is needed by this document whitethorn measurement be condition to define the precise nature of work or the circumstances under which it is to be carried out. Amendments to these principles of measurement for use in a particular locality or adopted for work non envisaged by this document shall be verbalise an appendix is provided for much(prenominal) amendments to be recorded.These principles of measurement may be applied equally to the measurement of proposed works and of recognised works. Bills of quantities The objects of bills of quantities are 1. To assist in the accurate preparation of tenders, by providing for measurement of quantities on a uniform basis 2. To provide a basis for the financial control of a project, in ossification with the condit ions of contract. Bills of quantities shall pull in and represent the works to be carried out work which can non be metric accurately shall be set forth as approximate or inclined in bills of approximate quantities.Conditions of contract, drawings and specifications shall be provided with the bills of quantities. The section headings and classifications do not levy restrictions upon the format and presentation of bills of quantities. Measurement Work shall be deliberate winnings as fixed in dumbfound and to severally one(prenominal) measurement shall be taken to the nearest 10 millimetres this principle shall not apply to dimensions separate in interpretations. Unless otherwise stated, no deduction shall be do from items needed to be mensural by battlefield for voids of less than 1. 00 m2.Minimum deductions of voids shall key only to voids within the edges of calculated subjects voids which are at the edges of metric field of honors shall evermore be dedu cted, irrespective of size of it. These principles of measurement may be used with other units of measurement and the particular amendments shall be stated. Notwithstanding these principles of measurement, a let on minor building or structure may be enumerated. Items to be fully comprehensive Unless otherwise stated, all items shall be fully comprehensive of all that is necessary to fulfill the Items to be fully liabilities and obligations arising out of the contract and shall allow in 1.Labour and all associated costs 2. Materials, skilfuls and all associated costs 3. provision of plant 4. Temporary works 5. Establishment charges, overheads and profit. Description of items Items which are call for to be enumerated. or for which an item is required, shall be fully described. Items which are to be metrical by space or depth shall state the cross-sectional size and shape, girth or ranges of girths or such other info as may be grab for items of pipework it shall be stat ed whether the diameter is internal or external.Items which are to be calculated bv area shall state the thickness or such other information as may be capture. Items which are to be mensural by lading shall state the material thickness and unit weight if allow for (for example, ductwork). GP1. 2 GP1. 3 GP2 Bills of quantities GP2. 1 GP2. 2 GP2. 3 GP2. 4 GP3 Measurement GP3. 1 GP3. 2 GP3. 3 GP3. 4 GP3. 5 GP4 Items to be fully inclusive GP4. 1 GP5 Description of items GP5. 1 GP5. 2 GP5. 3 GP5. 4 1 GP5. 5 Notwithstanding these principles of measurement, proprietary items may be calculated in a manner appropriate to the manufacturers tariff or customary practice.The description of items in bills of quantities may refer to other documents or drawings and any extension to such information shall be mute to fulfill any requirement of these principles of measurement alternatively, reference may be do to published information. Work to be executed by a specialist nominated by the empl oyer Unless otherwise required by the conditions of contract, work which is required to be executed by a specialist nominated by the employer shall be stipulation as a heart and soul such append shall be sole(prenominal) of contractors profit and in each consequence an item shall be disposed for the gain of profit.An item shall be inclined in each skid for assistance by the contractor, which shall allow 1. Use of contractors administrative arrangements 2. Use of constructional plant 3. Use of contractors facilities 4. Use of temporary works 5. Space for specialists offices and stores 6. Clearing forth rubbish 7. Scaff disuseding required by the specialist, giving particulars 8. Unloading, distributing, hoisting and placing in office items of plant, machinery or the equal, giving particulars.Goods, materials or services to be provided by a merchant or tradesman nominated by the employer Unless otherwise required by the conditions of contract, goods, materials or services which are required to be provided by a merchant or tradesman nominated by the employer shall be granted as a sum such sum shall be exclusive of contractors profit and in each case an item shall be accustomed up for the improver of profit. Fixing goods and materials shall be stipulation up in consent with the relevant clauses in these principles of measurement fixing shall be still to let in unloading, storing, distributing and hoisting the, goods and materials.Particulars shall be given of any requirements for the contractor to arrange for talking to or pay any costs of conveying goods or materials. Work to be executed by a government or public strength Unless otherwise required by the conditions of contract, work which may only be carried out or by a government or public authority shall be given as a sum such sum shall be exclusive of contractors profit and in each case an item shall be given for the addition of profit. An item shall be given in each case for assistance by the contractor as described in clause GP6. . Dayworks The cost of labour in dayworks shall be given as a sum alternatively, a schedule of the polar categories of labour may be given containing a provisional total of hours for each category. The cost of labour take ond in a sum or schedule shall include wages, bonuses and all allowances paid to operatives directly busy on dayworks (including those operating mechanical plant and transport) in conformism with the appropriate employment agreement or, where no such agreement exists, the actual payments made to the work people concerned.The cost of materials in dayworks shall be given as a sum alternatively, 3 schedule may be given containing a provisional quantity of contrary materials. The cost of materials included in a sum or schedule shall be the net invoiced price, including delivery to site. The cost of constructional plant busy exclusively in dayworks shall be given as a sum alternatively, a schedule of the different ca tegories of plant may be given containing a provisional quantity of hours, or such other period of time as may be appropriate, for each category.The cost of constructional plant included in a sum or schedule shall include fuel, consumable stores, repairs, maintenance and insurance of plant. An item shall be given for the addition of establishment charges. overheads and profit to each of the sums or schedules of labour, materials or plant. Description of items (continued) GPS. 6 GP6 GP6. 1 Work to be executed by a specialist nominated by the employer GP6. 2 GP7 GP7. 1 GP7. 2 Goods, materials or services to be provided by a merchant or tradesman nominated by the employer GP8 GP8. 1 Work to be executed by a government or public authority GP8. 2 GP9 GP9. 1Dayworks GP9. 2 GP9. 3 GP9. 4 GP9. 5 GP9. 6 GP9. 7 2 Dayworks (continued) GP9. 8 Establishment charges, overheads and profit shall include 1. cost related to the employment of labour 2. Costs related to the storage of materials, includ ing discussion and waste in storage 3. Contractors administrative arrangements 4. Constructional plant, except plant employed exclusively on dayworks 5. Contractors facilities 6. Temporary works 7. Sundry items. Contingencies GP10 GP 10. 1 Unless otherwise required by the conditions of contract, contingencies shall be given as a sum no item shall be given for the addition of profit.SECTION A GENERAL REQUIREMENTS A1 Conditions of contract A1. 1 A1. 2 Conditions of contract A schedule of the clause headings shall be treated out in the bills of quantities. Where there is an appendix to the conditions of contract requiring insertions to be made, a schedule of the insertions shall be set out in the bills of quantities. Specification Where the specification contains clauses related to any of the future(a) General Requirements, the bills of quantities shall make reference to the appropriate clauses. Restrictions Particulars shall be given of any restrictions, which shall include 1. Acc ess to and possession or use of the site 2.Limitations of functional space 3. Limitations of working hours 4. The maintenance of alert services on, under or over the site 5. The execution or completion of the work in any specific order, sections or phases 6. Items of a kindred nature. Contractors administrative arrangements An item shall be given for contractors administrative arrangements, which shall include 1. Site administration 2. care 3. Security 4. Safety, health and welfare of workpeople 5. Transport of workpeople. Constructional plant An item shall be given for constructional plant, which shall include 1. Small plant and tools 2. Scaffolding 3.Cranes and lifting plant 4. Site transport 5. Plant required for specific trades. Employers facilities Particulars shall be given of any facilities required for the employer or the employers representatives, which shall include 1. Temporary accommodation (for example, offices, laboratories, living accommodation), including heating , cooling, lighting, furnishing, attention or related facilities 2. Telephones, including costs of calls alternatively, the cost of calls may be given as a sum 3. Vehicles 4. Attendance of staff (for example, drivers, research lab assistants) 5. Equipment (for example, surveyor laboratory equipment) 6.Special requirements for programmes or progress charts 7. Any other facilities (for example, progress photographs, signboards). A2 Specification A2. 1 A3 Restrictions A3. 1 A4 Contractors administrative arrangements A4. l A5 Constructional plant A5. 1 A6 Employers facilities A6. 1 3 A7 A 7. 1 Contractors facilities An item shall be given for facilities required by the contractor, which shall include 1. Accommodation and buildings, including offices, laboratories, compounds, stores, messrooms and living accommodation 2. Temporary fencing, including hoardings, screens, roofs and guard inveigh 3.Temporary roads, including hardstandings and crossings 4. Water for the works particulars sh all be given if water will be supplied to the contractor 5. Lighting and power for the works particulars shall be given if current will be supplied to the contractor 6. Temporary telephones. Particulars shall be given where the nature or point of the facilities is not at the politeness of the contractor. Temporary works An item shall be given for temporary works, which shall include 1. Traffic fun 2. Access roads 3. Bridges 4. Cofferdams 5. Pumping 6. De-watering 7. Compressed air for tunnelling. Particulars shall be given where the nature r extent of the temporary works is not at the judgment of the contractor. Sundry items An item shall be given for sundry items, which shall include 1. Testing of materials 2. Testing of the works 3. Protecting the works from inclement prevail 4. Removing rubbish, protective casings and coverings and cleaning the works at completion 5. Traffic regulations 6. nutrition of public and private roads 7. Drying the works 8. Control of noise and b efoulment 9. All statutory obligations Particulars shall be given where the nature or extent of the sundry items is not at the discretion of the contractor.Sundry items Temporary works Contractors facilities A7. 2 A8 A8. 1 A8. 2 A9 A9. 1 A9. 2 SECTION B SITE WORK B1 B1. 1 B1. 2 B1. 3 B2 B2. 1 Site exploration generally Keeping records of site observations, site tests and laboratory tests shall be given as an item. Samples, site observations, site tests, a oratory tests an analyses shall be given as an item, Providing reports shall be given as an item. Trial holes Excavating trial holes shall be heedful by depth, taken along the pith line, stating the progeny and the supreme depth below commencing level.Earthwork support which is not at the discretion of the contractor shall be measurable by depth. Boreholes (including pumping test wells) Driving boreholes shall be mensural by depth, taken along the centre line, stating the takings and the maximum depth below commencing leve l raking boreholes shall be so described. Lining which is not at the discretion of the contractor shall be measured by depth. toughie pings shall be enumerated. Boreholes (including pumping test wells) Trial holes Site exploration generally B2. 2 B3 B3. 1 B3. 2 B3. 3 4 B4 Site preparation B4. 1 B4. 2 B4. 3 Site preparation Removing isolated trees shall be enumerated.Removing hedges shall be measured by length. Site clearance, which shall include removing vegetation, undergrowth, bushes, hedges, trees or the kindred, shall be measured by area. Demolitions and alterations The localisation principle of each item shall be given. Unless otherwise stated, old materials shall be silent to become the property of the contractor and shall be clean-cut away old materials required to remain the property of the employer shall be so described. Removing individual fittings, fixtures, engineering installations or the deal from an existing structure shall each be given as an item.Demolishing i ndividual structures (or part thereof) shall each be given as an item alternatively, demolishing all structures on a site may be given as an item. bully openings in existing structures and alterations to existing structures shall each be given as an item devising good all work damaged shall be understood to be included. Temporary screens and roofs shall be given as an item. bound Shoring incidental to demolitions and alterations, together with clearing away and making good all work damaged, shall be understood to be included.Shoring (other than that incidental to demolitions and alterations) shall be given as an item, stating the location clearing away and making good all work damaged shall be understood to be included. Particulars shall be given where the design of the shoring is not at the discretion of the contractor. Shoring which is required by the specification to be left in position shall be so described. Underpinning Work in underpinning shall be given under an appropriat e heading, stating the location. Unless otherwise stated, work shall be measured in accordance with the appropriate sections of this document.Temporary support shall be given as an item particulars shall be given where the design of the temporary support is not at the discretion of the contractor. Excavation shall be measured by stack, taken to the outside line of the projecting foundations or to the outside line of the advanced foundations (whichever is the greater), sort out as follows 1. Excavation in preliminary trenches down to the base of the existing foundations 2. Excavation below the base of the existing foundations. cracking away projecting foundations shall be measured by length.Earthworks generally Any information available concerning the nature of the ground and strata shall be provided with the bills of quantities. The quantities for dig, dredging or tunnelling shall be understood to be the muckle before shot, and no allowance shall be made for any orking space or subsequent variation in bulk existing voids shall be deducted. Multiple handling of materials and transporting about the site shall be understood to be included multiple handling which is required by the specification shall be so described in the item of disposal.Earthwork support shall be given as an item. Excavation in rock shall be so described alternatively, it may be measured as particular(a) over excavation (that is, B5 Demolitions and alterations B5. 1 B5. 2 B5. 3 B5. 4 B5. 5 B6 Shoring B6. 1 B6. 2 B6. 3 B6. 4 B7 Underpinning B7. 1 B7. 2 B7. 3 B7. 4 B7. 5 B8 Earthworks generally B8. 1 B8. 2 B8. 3 B8. 4 B8. 5 5 the flashiness of rock shall be measured bur no deduction shall be made from the volume of excavation in which the rock occurs). B8. 6 For the purposes of measurement rock is defined as any material met with which is of such size or position that. n the opinion of the employers representative. It can only be removed by flirt withs of wedges, special plant or explo sives. Excavation Unless otherwise stated, excavation shall be measured by volume as the void which is to be occupied by the permanent construction, or uprightly above any part of the permanent construction, classify as follows 1. Oversite excavation to remove pass away soil, stating the median(a) depth 2. Excavation to reduce levels 3. Excavation in cuttings 4. Basement excavation 5. Trench excavation to receive foundations, which shall include pile caps and ground beams 6. label excavation to receive foundation bases, stating the number 7. Excavation for diaphragm walls, stating the comprehensiveness of the permanent construction and the type of support fluid. Excavation of trenches for service pipes, run pipes, cables or the equal shall each be measured by length, stating the mean(a) depth disposal and make full shall be understood to be included. For excavation in tunnelling suffer clause B24. Dredging Dredging shall be measured by volume, stating the location and limi ts unless otherwise stated, measurement shall be understood to be taken from soundings. giving medication Disposal of material arising from excavation, dredging or tunnelling shall be measured by volume as equal to the volume of excavation, dredging or tunnelling and each shall be classify as follows 1. Backfilled into excavation 2. Backfilled in making up levels 3. Backfilled oversite to make up levels, giving enlarge of special contouring, embankments or the like 4. Removed, which shall include providing a suitable tip. Filling Filling material (other than that arising from excavation, dredging or tunnelling) shall be measured by volume as equal to the void to be filled, classify as follows 1. Filled into excavation 2.Filled in making up levels 3. Filled oversite to make up levels, giving details of special contouring, embankments or the like. Piling generally For the purposes of measurement, driven piling shall include timber, precast concrete or metal rafts. other(a) piling systems (for example, preformed casing with concrete filling) shall be measured in accordance with the principles for driven piling or bored piling as may be appropriate. Unless otherwise stated, reinforcement shall be measured in accordance with Section C. Driven piling planning heap shall be measured by length, stating the number reinforcement shall be given separately.Heads and shoes shall be enumerated. Driving piles shall be measured by length, taken from the pile point in contact with the ground when pitched to the pile point when driven, stating the number driving piles on rake shall be so described. Cutting off tops of piles and connections for lengthening piles shall be enumerated. Earthworks generally (continued) B9 B9. 1 Excavation B9. 2 B9. 3 B10 B10. 1 Dredging B11 B11. 1 Disposal B12 B12. 1 Filling B13 B13. 1 B13. 2 Piling generally B13. 3 B14 B14. 1 B14. 2 B14. 3 Driven piling B14. 4 6 B15 Bored piling B15. 1Bored piling Boring for piles shall be measured by length , taken from the formation level of the ground to the bottom of the pile hole, stating the number the measurement shall include for blind leaden when the pile top is to be below the formation level of the ground. Boring through rock shall be measured by length as extra over obtuse for piles (that is, the length of boring through rock shall be measured but no deduction shall be made from the total length of boring). Linings for piles shall be measured by length. Disposal of material arising from boring shall be measured in accordance with clause B11.Concrete filling shall be measured by volume. Cutting off tops of piles and forming enlarged bases shall be enumerated. Sheet piling The measurements for sheet piling shall be taken along the centre line. Supplying sheet piling shall be measured by area, taken as the area when in last position. Corner piles or the like shall be measured by length. Driving sheet piling shall be measured by area, taken from the formation level of the gro und to the bottom edge of the sheet piling when driven strutting and waling and withdrawing sheet piling shall be understood to be included.Cutting sheet piling shall be measured by length. Sheet piling which is required by the specification to be left in position shall be so described. Performance designed piling Performance designed piles shall be enumerated reinforcement and disposal of material arising from boring shall be understood to be included. Details shall be given when the pile top is to be below the formation level of the ground. Testing piling Testing piling, which shall include trial piles and testing working piles, shall be given as an item.Underground drain drain pipes shall be measured by length, taken along the centre line over all fittings drain pipes within inspection domiciliate or the like shall be so described and shall be understood to drainage include fixings and supports. Drain fittings in the length (for example, bends, junctions) shall be enumerated, sort out together for each size of pipe and described as fittings. Drain accessories (for example, gullies, traps) shall be enumerated concrete surrounds and supererogatory excavation shall be understood to be included.Concrete beds and coverings for drain pipes shall each be measured by length, stating the diameter of the pipe surrounds to vertical pipes shall be so described and shall be understood to include formwork. Inspection chambers or the like shall be enumerated alternatively, they may be measured in accordance ith the relevant sections of this document and given under an appropriate heading. Connections to existing drains shall be enumerated, subject to clause GP8. Paving and surfacing Paving and surfacing shall be measured by area. Expansion joints and ater sugar shall be measured by length.B15. 2 B15. 3 B15. 4 B15. 5 B15. 6 B16 Sheet piling B16. 1 B16. 2 B16. 3 B16. 4 B16. 5 B16. 6 B17 B17. 1 B17. 2 B18 Testing piling B18. 1 B19 Underground drainage B19. 1 B19. 2 B19 . 3 B19. 4 B19. 5 B19. 6 B20 Paving and surfacing B20. 1 B20. 2 7 B20. 3 B21 B21. 1 Channels, curbs, edgings or the like shall be measured by length curving work shall be so described. Fencing Fencing, which shall include posts and supports in the length, shall be measured by length excavating pits, disposal and filling shall be understood to be included.Special posts (for example, gate posts, straining posts) shall be enumerated excavating pits, disposal and filling shall be understood to be included. Gates, barriers or the like shall be enumerated. Finishes shall be measured in accordance with Section J. Landscaping Cultivating and fertilising ground shall be measured by area. Soiling, seeding and turfing shall be measured by area. Hedges shall be measured by length. Trees and shrubs shall be enumerated. Railway work Track, guard rails and conductor rails shall each be measured by length, taken along the centre line over all fittings curved work shall be so described.Sleepers and chairs shall be enumerated. Switches and crossings shall be enumerated, classified as follows 1. Switches and turnouts 2. Diamond crossings 3. Single snarf crossings 4. Double slip crossings 5. Other switches and crossings. Ballast shall be measured by volume, without deduction for run, classified as follows 1. Bottom ballast, placed before the track is laid 2. Top ballast, placed after the track is laid. Concrete track foundations shall be measured by length, except that overwidth foundations for switches and crossings shall be measured by area reinforcement and shuttering shall be understood to be included.Bitumen filler to complete rail assemblies shall be measured by length. Buffer kale, wheel stops or the like shall be enumerated. Signalling installations shall be measured in accordance with Section L or Section R. Tunnel excavation Excavation shall be measured by volume as the void which is to be occupied, including the volume of permanent linings, grouped as may be approp riate to identify different lengths and classified as follows 1. Straight tunnels 2. Straight shafts 3. veer tunnels 4. Curved shafts 5. Tapered tunnels 6. Tapered shafts 7.Other cavities, which shall include transitions, breakaways and intersections between shafts and tunnels. onwards probing shall be measured by length, stating the number of probes. For disposal see clause B11. Paving and surfacing (continued) Fencing B21. 2 B21. 3 B21. 4 B22 B22. 1 B22. 2 B22. 3 B22. 4 B23 B23. 1 Landscaping Railway work B23. 2 B23. 3 B23. 4 B23. 5 B23. 6 B23. 7 B23. 8 B24 B24. 1 Tunnel excavation B24. 2 B24. 3 8 B25 Tunnel linings B25. 1 Tunnel linings Poured concrete linings shall be measured by area, stating whether spray or cast concrete, classified as follows 1. lining 2. alternative lining.Preformed segmental tunnel linings shall be enumerated. Tunnel support and stabilisation timberland supports shall be measured by volume. Sprayed concrete supports and reinforcement shall be measured by area. Rock bolts shall be measured by length. Face packers shall be enumerated. Metal arch supports shall be measured by weight. Injection of fix materials shall be measured by weight. B25. 2 B26 Tunnel support and stabilisation B26. 1 B26. 2 B26. 3 B26. 4 B26. 5 B26. 6 SECTION C CONCRETE WORK C1 Generally C1. 1 C1. 2 Generally Reinforced poured concrete and plain poured concrete shall each be so described.Poured concrete required by the specification to be placed, compacted, cured or otherwise treated in a particular manner shall be so described. No deduction shall be made for voids less than 1. 00 m3, nor for the volume of any reinforcement or structural metal enclosed in the concrete, except that voids caused by boxed or tubular structural metalwork shall always be deducted. Unless otherwise described, two-dimensional surfaces of concrete shall be understood to be tamped. Poured concrete Unless otherwise stated, poured concrete shall be measured by volume, classified as fo llows 1. Foundations, which shall include combined or isolated bases 2. bus caps, which shall include ground beams 3. Blinding 4. Beds, which shall include roads and footpaths, stating the thickness 5. hang up slabs, which shall include floors, landings, roofs or the like, stating the thickness 6. Walls, which shall include attached columns, stating the thickness 7. Columns, which shall include casing to metal stancheons 8. Beams (measured below the slab), which shall include lintels and casing to metal beams 9. Staircases, which shall include steps and strings 10. Diaphragm walls 11. Other classifications (for example, tunnel linings, bridge abutments) as may be appropriate.Poured concrete suspended slabs of special construction, including floors, landings, roofs or the like, shall be measured by area coffered and troughed slabs shall be so described, giving details of solid margins or the like. Where an item is required to be measured by volume and the thickness stated, then item s of differing thickness may be grouped together, provided that the range of the different thicknesses is stated. payoff The weight of bar reinforcement shall be the net weight without addition for rolling margin, supports, spacers or tying wire. prohibition reinforcement shall be measured by weight, stating the diameter bars of iffering diameters shall be given separately. Fabric reinforcement shall be measured by area, without addition for laps. C1. 3 C1. 4 C2 Poured concrete C2. 1 C2. 2 C2. 3 C3 Reinforcement C3. 1 C3. 2 C3. 3 9 C3. 4 C4 C4. 1 Reinforcement shall be given as an item where the detailed design work is the responsibility of the contractor. Shuttering Unless otherwise stated, shuttering shall be measured by area, taken as the net area in contact with the terminused face of concrete, classified as follows 1. Soffits shuttering to soffits of special construction shall be so described 2. aslant soffits, which shall include soffits of staircases 3.Sloping upper surfa ces, which shall include surfaces more than 15 from horizontal 4. Sides of foundations, which shall include bases, pile caps and ground beams 5. Sides of walls, which shall include attached columns 6. Returns to walls, which shall include ends, projections and reveals of openings or recesses 7. Sides and soffits of beams, which shall include lintels and breaks in soffits isolated beams shall be so described 8. Sides and soffits of aslant beams, which shall include lintels and breaks in soffits isolated beams shall be so described 9. Sides of columns 10. Staircases, which shall include treads, isers and strings but exclude soffits 11. Other classifications (for example, tunnel linings, bridges, bridge abutments) as may be appropriate. Shuttering to edges, which shall include face of curb or upstand or break in upper surface of floor, shall be measured by length items of differing height may be grouped together, provided that the range of different heights is stated. Grooves, which s hall include throats, rebates, chamfers or the like, 2500 mm2 sectional area or over shall be measured by length grooves less than 2500 mm2 sectional area shall be understood to be included.Shuttering may be enumerated where it is more appropriate to do so (for example, decorative features). Shuttering which is required by the specification to be left in position shall be so described. Shuttering to curved, conical and worldwide surfaces shall each be so described. Shuttering to provide a special finish shall be so described. Unless otherwise stated, if the volume of concrete has not been deducted, shuttering to the faces of a void shall be understood to be included. Precast concrete Moulds for precast units shall be understood to be included.Reinforcement shall be measured in accordance with clause C3 and given under an appropriate heading alternatively, it may be described in the item. Floor slabs, partition slabs or the like shall be measured by area. . Lintels, sills, duct cove rs or the like shall be measured by length alternatively, duct covers may be measured by area. geomorphological units (for example, beams, stanchions, tunnel rings) shall be enumerated. Padstones, cappings or the like shall be enumerated. Prestressed concrete Prestressed concrete work shall be given under an appropriate heading.Prestressed concrete shall be measured by volume, classified in accordance with clause C2. Reinforcement shall be measured in accordance with clause C3 supporting steel wires or cables shall be measured by weight. Shuttering shall be measured in accordance with clause C4, stating whether to pre-tensioned or post-tensioned members. Sundries Surfaces finished to go or cross-falls shall be measured by area. Reinforcement (continued) Shuttering C4. 2 C4. 3 C4. 4 C4. 5 C4. 6 C4. 7 C4. 8 C5 C5. 1 C5. 2 Precast concrete C5. 3 C5. 4 C5. 5 C5. 6 C6 C6. 1 C6. 2 C6. 3 Prestressed concrete C6. 4 C7 C7. 1 Sundries 0 Sundries (continued) C7. 2 C7. 3 C7. 4 C7. 5 Surface f inishes shall be measured by area, except that tamped finishes shall be understood to be included. Expansion material or the like shall be measured by area. Designed joints, water stops, cast-in impart or the like shall be measured by length. Forming sinkings, channels or the like shall be measured by length and, where appropriate, the item may include additional excavation, hardcore, shuttering and concrete alternatively, they may be enumerated. Fixings, ties, inserts or the like shall be enumerated alternatively, they may be measured by area.Mortices, holes or the like shall be understood to be included. C7. 6 C7. 7 SECTION D MASONRY D1 Generally D1. 1 D1. 2 D2 Walls and piers D2. 1 Generally Sloping, battering and curved work shall each be so described. Reinforced masonry shall be so described. Walls and piers Walls and piers shall be measured by area, classified as follows 1. Walls integral piers shall be measured as walls of combined pier and wall thickness 2. Walls make agai nst other construction 3. Cavity walls measured as a abstruse item, including skins and cavity alternatively, the skins and cavity may each be measured by area.Closing cavity walls at ends or around openings shall be understood to be included 4. Isolated piers. Faced or evenhandedly confront work shall each be so described alternatively, it may be measured as extra over walls, stating whether face up or fair confront on one or both sides (that is, the area of faced or fair faced work shall be measured but no deduction shall be made from the area of walling on which the faced or fair faced work occurs). Sills, etc. Sills, copings, oversailing or pull away courses or the like shall be measured by length. Arches shall be measured by length.Reinforcement Reinforcement shall be measured in accordance with clause C3 alternatively, fabric reinforcement may be measured by length. Sundries Concrete filling to cavities shall be measured by area. Expansion joints or the like shall be measu red by length. Air bricks or the like shall be enumerated. D2. 2 D3 Sills, etc. D3. 1 D3. 2 D4 Reinforcement D4. 1 D5 Sundries D5. 1 D5. 2 D5. 3 SECTION E METALWORK E1 Generally E1. 1 Generally The weight of metalwork shall be the net weight, without addition for rolling margin or welding material and without deduction for holes, dislocate cuts, notches or the like.Welded, riveted or bolted work shall each be so described. Structural metalwork Unless otherwise stated, structural metalwork shall be measured by weight, classified as follows 1. Grillages 2. Beams 3. Stanchions E1. 2 E2 Structural metalwork E2. 1 11 4. 5. 6. 7. E2. 2 E2. 3 E2. 4 E2. 5 Portal frames, stating the number ceiling trusses, stating the number Support steelwork, which shall include sheeting rails, braces, struts or the like Other classifications, as may be appropriate. Structural metalwork (continued) Fittings (for example, caps, brackets) shall be given as an item.Fixings (for example, bolts, distance piec es, rivets) shall be given as an item. Wedging and grouting bases or the like shall be enumerated. Holding down bolts or the like shall be enumerated temporary boxes and grouting shall be understood to be included. Protective treatment shall be given as an item. Non-structural metalwork Floor plates, duct covers, sheet metal coverings and linings or the like shall be measured by area. Bearers, balustrades, handrails (except where included with a staircase), frames or the like shall be measured by length.Matwell frames, cat ladders, gates, staircases or the like shall be enumerated. Non-structural metalwork E2. 6 E3 E3. 1 E3. 2 E3. 3 SECTION F WOODWORK F1 F1. 1 Generally Timber which is sawn (that is, not milled) and timber which is finished (that is, milled) shall each be so described. Descriptions of timber members shall state whether the sizes are basic (that is, before machining) or finished (that is, milled, within permitted deviations). Structural timbers Structural timbers sh all be measured by length, classified as follows 1. Floors and compressed roofs 2.Pitched roofs 3. Walls 4. Kerbs, bearers or the like 5. Cleats, sprockets or the like. Strutting and bridging between joists shall be measured by length, taken overall the joists. Boarding and flooring Unless otherwise stated, embarkment and flooring shall be measured by area, without addition for joints or laps, classified as follows 1. Floors, which shall include landings 2. Walls, which shall include returns, reveals of openings or recesses and attached and uncommitted columns 3. Ceilings, which shall include attached and unattached beams and soffits of staircases 4.Roofs, which shall include tops and cheeks of dormers and sides and bottoms of gutters, stating whether flat, sloping or vertical firring pieces and bearers shall be understood to be included. Eaves and verge boards, which shall include fascias, barge boards or the like, shall be measured by length. Fillets and rolls shall be measured by length. chiliad and battens Open-spaced cause and battens shall be measured by area, taken overall. Individual grounds and battens shall be measured by length. Framework Framework shall be measured by area, taken overall alternatively, it may be measured by length.Framework Grounds and battens Boarding and flooring Structural timbers Generally F1. 2 F2 F2. 1 F2. 2 F3 F3. 1 F3. 2 F3. 3 F4 F4. 1 F4. 2 F5 F5. 1 12 F6 Finishings and fittings F6. 1 Finishings and fittings Finishings shall be measured by length, classified as follows 1. Cover fillets, which shall include architraves, skirtings or the like 2. Beads, which shall include stops or the like 3. Edgings, which shall include window boards, nosings or the like. Unless otherwise stated, fittings shall be measured by length, classified as follows 1. Work tops, which shall include seating or the like 2. Handrails or balustrades.Shelving shall be measured by area alternatively, it may be measured by length. Backboards or the lik e shall be enumerated. Built-up members shall be so described. Plastic coverings or the like shall be described with the item on which they occur, stating whether on one or more faces alternatively, they may be measured separately by area. Sheet linings shall be measured by area, classified as follows 1. Walls, which shall include returns, reveals of openings or recesses and attached and unattached columns 2. Ceilings, which shall include attached and unattached beams and soffits of staircases. composite plant items Unless otherwise stated, composite items (which shall mean items which might be fabricated off-site whether or not they are fabricated off-site) shall be enumerated all metal work or the like shall be understood to be included. Any associated work (for example, decorations) shall be measured in accordance with the relevant sections of this document. Sundry items Finished surfaces on sawn items shall be measured by length. Metalwork Metalwork items associated with woodwor k shall be enumerated alternatively, waterbars or the like may be measured by length. Ironmongery Units or sets of ironmongery shall be enumerated.F6. 2 F6. 3 F6. 4 F6. 5 F6. 6 F6. 7 F7 Composite items F7. 1 F7. 2 F8 Sundry items F8. 1 F9 Metalwork F9. 1 F10 Ironmongery F10. 1 SECTION G THERMAL AND MOISTURE PROTECTION G1 Generally G1. 1 G1. 2 G2 Coverings and linings G2. l Generally Work shall be measured flat without addition for laps or seams. Curved, spherical and conical work shall each be so described. Coverings and linings Unless otherwise stated, roofing, tanking, waterproof coveri