Figure 1-12.—Bolting of steel column.SteelSteel pipe columns are often used in wood-frameconstruction, with both wood and steel girders. Whenusing wood girders, secure the post to the girder withlag bolts. For steel girders, machine bolts are required.The base of the steel post is bolted to the top of the pier,as shown in figure 1-12. The post can also be bolted toanchor bolts inserted in the slab prior to pouring.GIRDERSGirders are classified as bearing and nonbearingaccording to the amount and type of load supported.Bearing girders must support a wall framed directlyabove, as well as the live load and dead load of the floor.Nonbearing girders support just the dead and live loadsof the floor system directly above. The dead load is theweight of the material used for the floor unit itself. Thelive load is the weight created by people, furniture,appliances, and so forth.WoodWood girders may be a single piece of timber, orthey may be laminated (that is, built up) of more thanone plank. The built-up girder in figure 1-13, forexample, consists of three 2- by 12-inch planks. TheFigure 1-13.—Built-up girder.1-6
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
