How to determine the quantity of shuttering plywood, nails, shuttering oil, clamp for a RCC slab
The computation process is very simple for determining the quantity of shuttering with the use of thumb rules. Based on the type of unit, the area of the shuttering is calculated in square feet on in square meter. Normally, shuttering stands for a temporary structure that is built up during the construction process and it will be detached as soon as the concrete attains its required strength.
In order to learn how to work out the quantity of shuttering with thumb rule, go through the following article. Usually, thumb rule provides us a rough quantity that should be applied in the construction work. The quantity is almost more or less with regard to the actual quantity.
Prior to start the calculation procedure; learn the definition of thumb rule and running feet (rft).
It is described as a constant number for finding out the approximate quantity calculation by using the past experience as well as our day to day practice. The output obtained with thumb rule is almost equivalent to the actual quantity.
Running feet is taken as the front face width and height of an object that should be treated as fixed. Running foot is utilized in estimation to calculate materials like steel or timber or a construction work that contains a unvarying cross section throughout the length. It is applicable where the length of the section is the most logical measurement that can be measured.
Given below, detail lists of thumb rules which are mostly used in construction industry:-
Concrete: 0.038 cum per sq. ft. of plan area. (+/- 5%)
Steel: 4.50 to 5.00 Kg per sq. ft.
Shuttering: 2.40 to 2.50 times the plan area of slab (it contains col./beams/sides etc)
Brick Work: 0.015 cum per sq. ft. of plan area.
Roughly 0.25 cubic metres of mortar and 500 bricks are needed for 1 cubic metre of brickwork
Concrete: 0.5A Cum for Commercial Bldg.
0.2A Cum for Residential Bldg.
Where, A denotes Total Built Up Area.(i.e. Plinth Area x No. of Floor)
Steel: 4.5-4.75 kg per Sqft of Built up Area for Residential Building
5.0-5.5 kg per Sqft of Built up area for Commercial Building.
Formwork: (1). Shuttering = 6 times the quantity of concreting.(or2.4 times the plinth area)
(a) No. of 12 mm Ply (2.44mx1.22m)=0.22 times of shuttering ( or, 0.4A)
(b) Batten (75mmx40mm)=19.82 X No. of Ply Sheets(it presents batten in RM)
(c) Nails=0.22x total area of shuttering.(unit-kg) Practically, 75 gm nails and 75 gm binding wire + nut-bolts are used upper sqm of shuttering
(d) Shuttering Oil=0.065x total area of shuttering (unit-Lt)
To learn how to work out the quantity of shuttering plywood, nails, shuttering oil, clamp etc. for construct a R.C.C. slab on covered area of 2000 square feet on the basis of thumb rule, go through the following article.