Roof Slab Reinforcement Calculation

Lineal feet of rebar plus the amount of waste.

Roof slab reinforcement calculation.

For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Steps to calculate the reinforcement required for slab deduct the cover for finding length of bar. The one way slab is supported on two beams and then to the columns of the building. 3 foundation 0 5 to 0 8.

Technically in the slab we give two different names of these bars main and distribution bar. Outside of the u s a degree angle is typically used. Before calculating the quantity of steel in one way slab it is very important to clear the basic concepts. The slab should be provided steel bars to withheld tensile force so this slab is called the rcc slab.

The bars we use in the tension zone of the slab is called bent up bars. I have given an example for the calculation of the quantity steel rod in slab below. Where reinforcement is called a steel rod. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.

The amount of result 3 divided by 20. Calculate optimal rebar spacing and weight for concrete slabs. The slab should be strong enough to bear the required load according to design. For example if the slab is 10 x 10 and the clearance is 3 the size of the rebar grid will be 9 6 x 9 6.

Evaluate the length of the distribution bar calculate the value of d depth of slab top cover bottom cover find out the no. 1 lintel and beams 1 to 2. Qaisar ali http www eec edu pk page 5 of 24. Main bars are 12 mm in diameter 150 mm centre to centre spacing distribution bars are 8 mm in diameter 150 mm centre to centre spacing.

This is needed to determine both the lengths of the rebar and how many rows and columns are needed. Calculation of steel bars in beams. Subtract the clearance from the length and width to find the dimensions of the grid. 4 roof slab 0 7 to 0 8.

The one way slab steel quantity calculation is done according to its supporting conditions. Main bar distribution bar difference top and bottom clear cover is 25 mm consider development length as 40 d thickness of slab 150 mm. Amount of rebar needed in lineal feet. Department of civil engineering n w f p uet peshawar design of reinforced concrete components of a house.

2 columns 1 to 5.