Thumb rule

Thumb rule for estimating the Concrete Volume with respect to the area:

The volume of concrete required = 0.038 m3/m2

Thumb rule for Steel quantity required for Slab, Beams, Footings & Columns:

Steel required in residential buildings = 4.5 Kgs – 4.75 Kgs / Sq. Ft.

Steel required For Commercial buildings = 5.0 Kgs-5.50 Kgs/Sq. Ft.

    Percentage of Steel in Structural Members:

1) Slab – 1% of the total volume of concrete
2) Beam – 2% of the total volume of concrete
3) Column – 2.5% of total volume of concrete
4) Footings – 0.8% of the total volume of concrete

Thumb Rules For Civil Engineers to estimate the Shuttering area:

Shuttering costs is taken as 15-18% of the total construction of the building. Shuttering work is done to bring the concrete in Shape. Thumb rule to estimate the shuttering required is 6 times the quantity of concrete or 2.4 times of Plinth area.

The No. of Shuttering Ply sheets = 0.22 times of Shuttering

Suppose, the shuttering area = 3m

Then Ply required for shuttering = 0.22 x 3 = 0.66m2

Battens Quantity Calculation:

Shuttering batten usually has a length & width of 75mm x 40mm.

Batten Quantity = 19.82 x No. of Ply Sheets

If work requires 25 Ply sheets, the total quantity of Battens are 19.82 x 25 = 495 Battens

Nails & Binding Wire Quantity in Shuttering:

Approximately, 75 gams of Nails used in the shuttering of the 1m2 area.

75gms of Binding wire is used for every 1m2 of Shuttering.

Thumb rule for Shuttering oil estimation :

Shuttering oil is applied on the shuttering plate surface used to de-frame or de-assemble from the concrete easily.

Total required Shuttering oil  = 0.065 x Total Area of Shuttering

(or)

For every 15m2 of shuttering 1 liter of shuttering oil is consumed.

Thumb rule used for Cement, Sand, Coarse Aggregate Quantity in Different grades of Concrete:

Thumb Rules For Civil Engineers for Brickwork:

Thumb Rules For Civil Engineers for Cement Masonry Quantity:

Thumb Rules Plastering Quantity :