Rcc Roof Beam Design

Construction of rcc design from start to end in step by step manner.

Rcc roof beam design.

2 thick brick tile. Design for shear contd pdf unavailable. Firstly begin the design by selecting depth and width of the beam then compute reinforcement area. The thickness of the masonry is given by t and rho is the density of masonry i e.

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Limit state of collapse shear. Design of doubly reinforced beam flexure i. Determination of loads and moments on rcc lintel beam the triangular design load coming over the lintel beam can be calculated by the formula.

Beams resist compression and tensile forces and add rigidity to the structure. Design of doubly reinforced beam flexure. Assume 50 ksi steel. Design the roof slab beam and column of house given in figure 1.

There is a nominal strength that is reduced by a factor which must exceed the factored design stress. Concrete compressive strength fc 3 ksi. Design of steel structures prof. Slabs s1 and s2 to be designed.

Secondly assume reinforcement area then calculate cross section sizes. For beams the concrete only works in compression over a rectangular stress block above the n a. Rcc beams are cast in cement concrete reinforced with steel bars. Beams generally carry vertical gravitational forces but can also be used to carry horizontal loads i e loads due to an earthquake or wind.

There are two approaches for the design of beams. Continuing on from part 3. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Here l ef is the effective span.

Varma example 2 1 determine the elastic section modulus s plastic section modulus z yield moment my and the plastic moment mp of the cross section shown below what is the design moment for the beam cross section. Steel yield strength fy 40 ksi. Let s consider a basic gable wood roof framing design. From elastic calculation and the.

Here we have a wood framed gable roof. Live load 40 psf figure 1.