Fewer posts on upper level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans.
Wood framing beam spans.
How to read floor beam span tables page includes a span calculator.
Size selection tables headers beams.
Learning how to design with them becomes straight forward with a few pointers.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Wood header beam span calculator posted on april 8 2020 by sandra versa lam lvl beams headers boise single ply beam solution professional 4101 8 6 01 wall construction wood i beam span chart trinity rosboro big beam df high strength.
Beam span maximums are based on a maximum anticipated live load.
On longer spans the beam may require much more bearing space as indicated by this table.
Anything 5 and above we always at least double cripple.
The span of a beam is dependent on a few variables.
Beams of more than one ply must be fastened together with either nails or bolts.
Wood framing tables can contain a lot of information in one table.
Headers beams.
According to the 2012 irc codes any beam joist or header shall never have a bearing of less than 1 1 2.
Allowable load tables 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.