A 2x12 with an e of 800 000 psi and fb of 790 psi also works since it can span 15 feet and 10 inches.
Roof ridge beam span table.
Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Distance from roof beam to next roof support i e the span of the rafter or roof truss from the roof beam to the next adjacent beam or wall.
So this table could accommodate a house with a total rafter span or house width of 32 feet.
Keep in mind that these are maximums in other words shortening spans slightly will result in a more solid structure.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
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.
Engineered wood products ewp lvl span and size charts.
Design engineers in accordance with.
Also see assumptions for table development.
For each application a pdf download is available.
Structural ridge beam span calculator posted on april 7 2020 by sandra rafter to ridge beam connection framing roof ceiling construction structural ridge beam absolute deflection in a ridge beam structural ridge beam tricks of the trade.
Then drop down to find the appropriate fb value for the span.
The spans in this table are based on a maximum supported rafter span of 16 feet where the supported span is the total horizontal distance spanned by the roof rafters divided in half not the diagonal distance or the length of the rafter.
Refer to sfpa s publication southern pine headers beams download in publications that includes all size selection and allowable load tables.
Loading conditions are detailed below.
Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002.
As the table shows no 2x8 s meet the span and spacing requirements but a 2x10 with an e of 1 300 000 psi and fb of 1093 psi can span 15 feet 3 inches more than enough.
The tables below give maximum spans for rafters and beams.
Design of single span ridge beams in roofs in houses office buidlings schools and other structures.
Versa lam laminated veneer lumber lvl beams and headers eliminate twisting shrinking and splitting and deliver flatter quieter floors and structures.
The figures are based on quality materials.
Continuous span beams are beams supported at three or more points along their length.
The spans given in these tables have been developed by experienced timber.
