Concrete
Measurements
- Dimensions of length, breadth and thickness shall be measured correct to nearest cm. exceptfor the thickness of slab and partition which shall be measured to nearest 5 mm. Areas shall be worked out to nearest 0.01 sq.m and the cubic contents of consolidated concrete shall be worked out to nearest 0.01 cum. Any work done in excess over the specified dimension or sections shown in the drawing shall be ignored.
- Concrete work executed in the following conditions shall be measured separately:
- Work in or under water
- Work in liquid mud
- Work in or under foul positions
- Cast-in -situ concrete and or precast concrete work shall be measured in stages described in the item of work, such as:
- At or near the ground level
- Upto specified floor level
- Between two specified floor levels
- Upto specified height above or depth below plinth level/ defined datum level.
- Between tow specified heights or depths with reference to plinth/defined datum level.
- Cast-in-situ and precast concrete work shall be measured separately
No deduction shall be made for the following:
- Ends of dissimilar materials for example beams, posts, girders, rafters, purlins, trusses, corbels and steps upto 500 sq cm in cross sections.
- Opening upto 0.1 sq metre (1000 sq.cm)
- Volume occupied by pipes, conduits, sheathing etc. not exceeding 100 sq cm each in cross sectional areas.
- Small voids such as shaded portions in Figure A to J below when these do not exceed 40 sq cm each in cross section.
Note: In calculating area of opening, the thickness of any separate lintel or sill shall be included in the height. Nothing extra shall be payable for forming such openings or voids.