Floor Girder Beam

This span table excerpt shows two possible sizes.

Floor girder beam. Table specifications are provided with each table indicating conditions and assumptions used to calculate the loads. In buildings that have joists beams and girders the joists carry the direct floor loads transferring these loads to the beams which in turn transfer the loads to girders which transfer the loads to the vertical. Normal spacing is 16 inches on center from center to center though some floors may have joists on 12 inch or 24 inch centers. The weight of the partition is listed in the architectural graphic standards as 10 pounds per square foot.

The numbers in gray indicate the distance between the support posts. A double 2x12 beam can span 12 feet. This table is simply a sample and may not be valid for your region. Aitc beam capacity tables.

The table below shows an excerpt from a maximum span for built up douglas fir floor beams table for supporting not more than one floor. There are several beam span tables for all the species of wood. Sample floor beam span table. Like beams girders typically have i shaped cross sections composed of two load bearing flanges and a web for stabilization.

Aitc capacity tables provide the uniformly distributed load that a glued laminated timber beam can support based on beam size span and material properties. Refer to sfpa s publication southern pine headers beams download in publications that includes all size selection and allowable load tables. Versa lam laminated veneer lumber lvl beams and headers eliminate twisting shrinking and splitting and deliver flatter quieter floors and structures. Dimensional lumber deck beam span chart.

The center beam carries half of the floor load the partition load and half of the second floor load. Live and dead loads are given in the building code. Floor joists spaced on regular intervals span the areas between supports such as walls foundations girders and beams. Floor joists or beams provide the below surface support for the wood subfloor of a room.

Generally a girder is heavier than a beam meaning that if either spans a wider gap or carries a heavier load or supports beams. Also see assumptions for table development. Numbers in blue are joist spans beam to beam or house to beam. Loading conditions are detailed below.

It is the main horizontal support of a structure or the large beam that supports smaller beams. Girders may also take on a box or z shape as well as other forms. Our versa lam lvl is manufactured in either alexandria lena louisiana in eastern united states or in white city oregon for the western united states. These tables are provided as a guideline.

A girder is simply a type of support beam. A 2 2x10 can span 10 feet and so on. Though joists may be any size that you desire using typical floor joist and beam specifications ensures that you can find hardware to fit the joists and that the floor provides adequate support for furniture and other items in a room.