What is the maximum span for a 2x8 header?
|Header Size||Maximum Span||Number of Trimmers|
|Double 2×6||4 ft., 0 in.||One|
|Double 2×8||5 ft., 0 in.||Two|
|Double 2×10||6 ft., 2 in.||Two|
|Double 2×12||7 ft., 1 in.||Two|
Thereof, how far can you span a 2x8 header?
Likewise, how long can a header span? Take the example of a first-floor 3-foot 2-inch header in a two-story 26-foot-wide house with a center bearing wall. A single-ply 9-inch-tall box header is good for up to a 4-foot span, and a 15-inch-tall box header works for spans up to 5 feet.
Hereof, how much weight can a 2x8 support?
some of it gets pretty technical in nature, and mostly relates to pounds / square foot of loading. 2x6s are generally used for ceiling joists, esp since you said 24" oc and reallllly short spans only (5 or 6 feet ). Most floor loads would be a minimum of 2x8 @ 16" oc and most preferbaly 2x10.
How big of a header do I need?
Measure the width of your door frame. Most door frames that are 4 feet wide or less require a 2-by-6 header. 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.