Roof Load Analysis Of Steel Structure

Snow load wind load and the structure s own weight.

Roof load analysis of steel structure.

Until recently analysis of complex structures proved to be difficult and consumed too much time. 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. Snow loads constitute to the vertical loads in the building. The main purpose of the analysis was to identify parts of the building which experienced high stresses.

Lateral loads roof diaphragm design shearwall design. Structural loads ppy the structure. The analysis and design of primary structural system. Load combinations provide the basic set of building load conditions that should be considered by the designer.

The is 875 part 4 1987 deals with snow loads on roofs of the building. The attachment of non structural elements is the. Roof truss analysis 1 6 in this example a parallel chord steel roof truss is analyzed for typical dead and roof live loads. We will consider only distributed loads.

In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant. The photo below shows a truss girder painted gray supporting the roof of a gymnasium. The load is not shared equally by the supporting structure. 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.

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. Weights of permanent 1 equipment such as heating and air conditioning systems are usually obtained from the manufacturer. But these types of loads are considered only in the snow fall places. Chapter 2 resistance of cross sections.

Typical design dead. 2 1 local buckling 2 2 classification 2 2 1 classes of cross sections 2 2 2 classification process. 1 5 design basis for structural steelwork 1 6 steel structures eurocode 3 1 6 1 structural analysis 1 6 2 sway stiffness 1 7 steel design strength 1 8 structural integrity. 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.

B for pipe steel. Ce 331 fall 2010 example. Point loads occur when a weight is imposed on one spot in a structure like a column. 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.

Live and dead loads listed in the building code for roofs and floors are approximations of distributed loads.