Roof Load Analysis Of Steel Structure

Such loads consist of the weights of the structural system itself and of all other material and equipment perma nently attached to the structural system.

Roof load analysis of steel structure.

When building a structure it is important to calculate wind load to ensure that the structure can withstand high winds especially if the building is located in an area known for inclement weather. Ce 331 fall 2010 example. Astm a36 fy 36 ksi for structural steel astm a615 gr 40 for 3 4 gr 60 for 5 and larger rebar steel astm a53 gr. Lateral loads roof diaphragm design shearwall design.

The is 875 part 4 1987 deals with snow loads on roofs of the building. We will consider only distributed loads. The photo below shows a truss girder painted gray supporting the roof of a gymnasium. The three major loads acting on the structure included.

The load combinations in table 3 1 are recommended for use with design specifications based on allowable stress design asd and load and resistance factor design lrfd. Load combinations provide the basic set of building load conditions that should be considered by the designer. Weights of permanent 1 equipment such as heating and air conditioning systems are usually obtained from the manufacturer. Analysis of point loading is best left to engineers.

In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant. Point loads occur when a weight is imposed on one spot in a structure like a column. Roof truss analysis 1 6 in this example a parallel chord steel roof truss is analyzed for typical dead and roof live loads. The minimum snow load on a roof area or any other area above ground which is subjected to snow accumulation is obtained by the expression.

The analysis and design of primary structural system. Live and dead loads listed in the building code for roofs and floors are approximations of distributed loads. Typical design dead. B for pipe steel.

Snow loads constitute to the vertical loads in the building. Until recently analysis of complex structures proved to be difficult and consumed too much time. Snow load wind load and the structure s own weight. But these types of loads are considered only in the snow fall places.

The main purpose of the analysis was to identify parts of the building which experienced high stresses. Chapter 2 resistance of cross sections. The attachment of non structural elements is the. The load is not shared equally by the supporting structure.

2 1 local buckling 2 2 classification 2 2 1 classes of cross sections 2 2 2 classification process.