I Beam Roof Construction

Column beam construction use steel and wood.

I beam roof construction.

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. 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. The bottom half is carried by the exterior bearing walls.

In homes you ll find beams in walls floors ceilings roofs decks and garages. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. 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. Plywood i beams are strong and used to support floors and roofs in homes and other building projects.

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 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. Here we have a wood framed gable roof. 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.

The design and structure of the i beam makes it uniquely capable of handling a variety of loads. The load from the top half of the roof is carried by the bearing wall or structural ridge. Along with posts and columns which are the beams vertical counterparts they support the structural integrity of all sorts of buildings. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

Let s consider a basic gable wood roof framing design. Continuing on from part 3. 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. A steel i beam costs 6 to 18 per foot for just the materials.