Header And Lvl Spans For Roof Load

The architectural graphic standards lists the weight of an exterior 2 6 wall as 16 pounds per ft 2.

Header and lvl spans for roof load. Any accurate calculation of beam size must take into account the tributary load area for a beam based on its spacing and the magnitude of load being carried. Engineered wood products ewp lvl span and size charts. The loads delivered to the header are. This span size only applies to single floors.

For example if you are using an lvl beam with two plies of 16 inches or three plies of 14 inches with the columns spaced 14 feet from one another the maximum span size is 36 feet. 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. Versa lam laminated veneer lumber lvl beams and headers eliminate twisting shrinking and splitting and deliver flatter quieter floors and structures. Anything 5 and above we always at least double cripple.

According to the 2012 irc codes any beam joist or header shall never have a bearing of less than 1 1 2. Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications. Floors supporting additional stories or roofs require sturdier construction and use different lvl span size charts. Lvl main beams in roofs offer accurate cross section sizes straightness and lightness.

On longer spans the beam may require much more bearing space as indicated by this table. Window door garage door headers supporting roof loads only. Loads are contributed to the lower header by the roof upper walls and 2nd floor system. However beam spans are only estimates.

Beams of more than one ply must be fastened together with either nails or bolts. Window door garage door headers supporting roof wall floor loads. It is imperative to design lvl beams to the right size in order to create a safe structural system.