Steel Roof Beam Design Example

Timber beam design seismic forces wind forces floor shearwall diagram lateral loads roof diaphragm design shearwall design continuous footing design.

Steel roof beam design example.

Calculate b width of plate. Nehrp recommended provisions steel design context in provisions steel behavior reference standards and design strength. Calculate the required section modulus for the steel plate. Beam design example choose the lightest wide flange steel section available to support a live load of 790 plf and a dead load of 300 plf over a simple span of 18 feet.

Here we have a wood framed gable roof. Compression the state for example in a column or an element of a truss whereby a member is being shortened by a force. Roof diaphragm panels typically vary from 0 0295 inches to 0 064 inches in thickness and come in widths of 18 inches to 36 inches or more. Our new smooth series cellular deck offers a blemish free beam to pan rivet.

Deck types are described in the steel deck institute sdi publication no. The skeletal structure of a roof system 18 0m long and 7 2m wide is as shown in figure below. 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. Choose final steel plate based on available sizes and check total capacity of the beam.

Compression is an axial load that is the opposite of tension. 2003 international building code. 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. Instructional material complementing fema 1051 design examples steel structures 23 1 2 1 2 beam moment f w f y f.

Fy 36 ksi for structural steel astm a615 gr 40 for 3 4 gr 60 for 5 and larger rebar steel astm a53 gr. Design criteria and specifications a. Assume 50 ksi steel. Assume the beam will support a plaster ceiling.

Let s consider a basic gable wood roof framing design. Continuing on from part 3. To illustrate this a simple design example has been presented. 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.

Design examples steel structures 43. Using d from step 4. 31 design manual for composite decks form decks and roof decks.