Structural Design Of Rcc Sloped Roof Pdf

A gable roof has a ridge at the center and slopes in two directions.

Structural design of rcc sloped roof pdf.

Different boundary conditions are considered like pyramidal panels a with and without ridge beam b with and without edge beam c supported on wall and d supported on columns with. Staad is automatically resolve the forces based on slope of roof given. Along the slope ii across the slope depending upon the boundary conditions. Especially computations have been made by use of bs 8110 based spreadsheets.

Roof snow drift surcharge a n g l e note a 15 increase in the allowable capacity of wood for loads that include snow which is a short term load snow loads 7 12 cs 0 99 slope 8 12 0 91 9 12 0 83 10 12 0 75 11 12 0 69 12 12 0 63 note that roofs exceeding an angle of 30 degrees may reduce the ground snow load. This structural design process has been carried out under use of bs8110 design code of practice. Based on the boundary condition you can determine the axial thrust and the bending moment. Sloping slabs under gravity load would be subjected to bending and axial thrust.

It is the strongest type of roof because it is braced by four hip rafters. Thanks srinivasan v structural engineer sharjah uae. It is the form most commonly used by the navy. According to the 1995 aci code all two way reinforced concrete slab systems including edge supported slabs flat slabs and flat plates are to be analyzed and.

For this reason various simplified methods have been adopted for determining moments shears and reactions of such slabs. The primary aim of the work is to analyze and design the pyramidal roof slab. Design loads for residential buildings 3 1 general loads are a primary consideration in any building design because they define the nature and magnitude of hazards or external forces that a building must resist to provide reasonable performance i e safety and serviceability throughout the structure s useful life. Hip the hip roof has four sloping sides.

In staad there is one option available to give this slopped roof loads by using py direction. Model the beam slab as per your slope requirement then assign the load through py option instead of gy fy. If the problem is statically determinate the equilibrium equations would. Pdf chapter 2 structural design of rcc building.