I Beam Roof Construction

Column beam construction use steel and wood.

I beam roof construction.

The load from the top half of the roof is carried by the bearing wall or structural ridge. Instead a wood i joist roof system is framed with either a central bearing wall or a structural ridge a beam that carries the roof load to posts. Steel beams are widely used throughout the construction industry when supporting heavy loads is required commonly termed an i beam because of its shape beams provide great load bearing support when used horizontally or standing as columns. The bottom half is carried by the exterior bearing walls.

The i beam also called the h beam wide beam w beam universal beam ub and rolled steel joist is the shape of choice for structural steel builds. Steel i beams are pretty husky structural components used sparingly on a residential building site because wood is the primary structural material found in most homes. Along with posts and columns which are the beams vertical counterparts they support the structural integrity of all sorts of buildings. A steel i beam costs 6 to 18 per foot for just the materials.

Their strength is derived from layers and grain patterns that run perpendicular to each other creating split proof construction that can support weight that would collapse single post beams. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Let s consider a basic gable wood roof framing design. Construction beams are horizontal weight bearing supports that bridge an area.

An i beam also known as h beam for universal column uc w beam for wide flange universal beam ub rolled steel joist rsj or double t especially in polish bulgarian spanish italian and german is a beam with an i or h shaped cross section the horizontal elements of the i are flanges and the vertical element is the web i beams are usually made of structural steel and are. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Here we have a wood framed gable roof.

In homes you ll find beams in walls floors ceilings roofs decks and garages. Steel support beams for residential construction costs 100 to 400 per foot to install or between 1 200 and 4 200 extra costs apply for knocking down walls rerouting utilities or adding underpinnings for support. Continuing on from part 3. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.