Steel Roof Beam Design Example

Here we have a wood framed gable roof.

Steel roof beam design example. The aim of this post is to show in the clearest manner how steel roof design can be carried out using eurocode 3 design code. Fy 36 ksi for structural steel astm a615 gr 40 for 3 4 gr 60 for 5 and larger rebar steel astm a53 gr. Instructional material complementing fema 1051 design examples steel structures 23 1 2 1 2 beam moment f w f y f. Floor beam span tables of residential structural design we will now look at roof rafter and beam design.

How to design a steel beam. Calculate b width of plate. The skeletal structure of a roof system 18 0m long and 7 2m wide is as shown in figure below. Using d from step 4.

Assume 50 ksi steel. Compression is an axial load that is the opposite of tension. 6 60 m max bay width. 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.

Timber beam design seismic forces wind forces floor shearwall diagram lateral loads roof diaphragm design shearwall design continuous footing design. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Design examples steel structures 43. Composite beam a structural element usually a beam that is connected to a concrete slab such that the steel and concrete act as one element.

There are essentially 6 steps to design most steel beams. Calculate the required section modulus for the steel plate. Our new smooth series cellular deck offers a blemish free beam to pan rivet. 2003 international building code.

Let s consider a basic gable wood roof framing design. Choose final steel plate based on available sizes and check total capacity of the beam. The profiled steel sheeting is transverse to the beam. Material choose the appropriate grade of steel for the beam you will be designing.

Design criteria and specifications a. To illustrate this a simple design example has been presented. Span length. The beam is assumed to be no propping required during construction.

Compression the state for example in a column or an element of a truss whereby a member is being shortened by a force. By tom kujawa designing a steel beam is not as complicated as you may think. Continuing on from part 3. Shape select the shape of steel beam you would like to design.