Roof Slab Reinforcement Calculation

The slab should be provided steel bars to withheld tensile force so this slab is called the rcc slab.

Roof slab reinforcement calculation.

Calculation of steel bars in beams. Department of civil engineering n w f p uet peshawar design of reinforced concrete components of a house. 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. The amount of result 3 divided by 20.

Lineal feet of rebar plus the amount of waste. I have given an example for the calculation of the quantity steel rod in slab below. Amount of rebar needed in lineal feet. Outside of the u s a degree angle is typically used.

Main bar distribution bar difference top and bottom clear cover is 25 mm consider development length as 40 d thickness of slab 150 mm. The one way slab steel quantity calculation is done according to its supporting conditions. 4 roof slab 0 7 to 0 8. Where reinforcement is called a steel rod.

Lb la 16 12 1 33 2 two way slab minimum depth of two way slab is given by formula hmin perimeter 180 2 16 12 12 180 3 73 in assume h 5. The slab should be strong enough to bear the required load according to design. Of bars compute the total wt of steel required for slab reinforcement. The amount the waste factor will add in lineal feet.

Before calculating the quantity of steel in one way slab it is very important to clear the basic concepts. This is needed to determine both the lengths of the rebar and how many rows and columns are needed. Steps to calculate the reinforcement required for slab deduct the cover for finding length of bar. Qaisar ali http www eec edu pk page 5 of 24.

Technically in the slab we give two different names of these bars main and distribution bar. Subtract the clearance from the length and width to find the dimensions of the grid. The one way slab is supported on two beams and then to the columns of the building. 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.

2 columns 1 to 5. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Evaluate the length of the distribution bar calculate the value of d depth of slab top cover bottom cover find out the no. 3 foundation 0 5 to 0 8.

1 lintel and beams 1 to 2.