Header Span Garage Door Header Size Calculator

Click on the appropriate beam this will take you to the calculation table for your project.

Header span garage door header size calculator. When in doubt use 2 by 12 inch headers. Most door frames that are 4 feet wide or less require a 2 by 6 header. Loads are contributed to the lower header by the roof upper walls and 2nd floor system. The sum will be the height of your double header in inches.

So an 8 foot tall wall weighs 8 ft x 16 pounds ft 2 128 pounds per lineal foot. Therefore the header would need to be made from doubled 2x6s. Span charts and 2012 irc building codes for girders and headers. It went like this.

Garage door header size calculator posted on october 29 2019 by bandi ruma wood beam design and installation no headers in nonbearing walls code notes window headers and door garage door header size headroom door frame and calculation. Determine the beam header span length and the span carried supported by the beam header. That would take care of the wind and seismic shear loads. Window door garage door headers supporting roof loads only.

All other data is available on page 121 of the 2012 international residential code. 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. Includes span tables for all load bearing locations and the number of jack studs. The loads delivered to the header are.

The architectural graphic standards lists the weight of an exterior 2 6 wall as 16 pounds per ft 2. This product is new and distributors don t want to stockpile inventory. Timberstrand header comes only in 3 widths in depths that range from 4 3 8 to 18. Only that the minimum net header size shall be 3 x ll 25.

On longer spans the beam may require much more bearing space as indicated by this table. According to the 2012 irc codes any beam joist or header shall never have a bearing of less than 1 1 2. Anything 5 and above we always at least double cripple. It is worth noting that the 18 foot garage door header application pushed timberstrand beyond its structural limit.

Measure the span in feet and add 2 to that number. Measure the width of your door frame. Between 4 and 5 feet the header should be built 2 inches wide and 8 inches long while a larger opening needs a header that is 2 by 12. The column on the left of each chart labeled beam span represents the beam length with bearing required for your project.

Window door garage door headers supporting roof wall floor loads. 16 garage door headers mtlogcabin a minimum 3 x 11 25 net header size is required for opening from 6ft to a maximum 18 ft.