T o p i c 3

CC301:QUANTITY MEASUREMENT

Bill of Quantity

Describe the uses and importance of BoQ

Unit of quantity measurement

Recognize the structural drawing

Estimate earthwork

Produce taking off quantities of

substructure

Bill of QuantityBQ are prepared by the quantitysurveyors and are widely used for project costing, tendering, as part of contract documentationand for valuation of interim payment and variation orders.They are produced according to thelocally produced Standard Method of Measurement (SMM)

To provide a basis for tendering used for valuation of interim paymentsused for valuation of variation ordersto order and purchase materials

Size Unit

1. Length

2. Area

3. Volume

4. Weight

5. Amount

6. Work cannot be measured

by any unit of measurement

Meter

Meter square

Meter cube

Kg

Number

Item

A structural drawing, a type of technical drawing, shows information about architectural foundations, roof, or other structural details.STRUCTURAL   DRAWINGS   (sometimes identified  with  the  designating  letter  S on their title blocks) consist of all the drawings that describe the structural members of the building and their relationship  to  each  other.  A  set  of  structural drawings includes foundation plans and details, framing plans and details, wall sections, column and   beam   details,   and   other   plans,   sections, details, and schedules necessary to describe the structural  components  of  the  building  or  structure. The general notes in the structural drawings should also include, when applicable, roof, floor, wind,  seismic,  and  other  loads, allowable soil pressure or pile bearing capacity, and allowable stresses of all material used in the design.

Taking off quantities of substructure:piling work for concrete pile and timber pile

work below lowest level (concrete, formwork and reinforcement)i. foundationii. column stumpiii. ground beamiv. ground slab.

Piling work

Foundation

Column stump

Ground Beam

Ground Slab