A habitable attic assembly supported by 2x4 studs is limited to a roof span of 32 feet.
Wood stud wall span tables.
Table 9 1 in span tables for joists and rafters figure 5 gives a required compression value of 237 psi for a span of 16 feet and bearing length of 1 5 inches.
Canadian wood frame house construction cmhc offers a range of housing related information.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
Understand why wall framing is analyzed using out of plane c c wind pressures independent of gravity loads 3.
Where the roof span exceeds 32 feet the wall studs shall be increased to 2x6 or the studs shall be designed in accordance with accepted engineering.
26 0 23 8 22 3 20 8 22 9 20 8 19 5 18 0.
Nominal size width depth 20 psf live load 10 psf dead load l 240.
Prostud limiting height charts new clarkdietrich itools structural stud lookup tool interior wall heights w structural framing interior.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
The sound files associated with each wall are simple tones with the same relative level as the stc ratings so that the tone for the stc 60 wall is 10 db lower than the tone for the stc 50 wall and so forth.
Allowable limiting heights spans contact clarkdietrich technical services at 888 437 3244 for any questions on tables below.
View joist rafter tables.
Be familiar with various asce 7 10 asd load combinations used for bearing walls 4.
Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
31 8 28 9 27 1 25 1 27 8 25 1 23 7 21 11.
Be knowledgeable of standards including the 2015 nds 2015 wfcm and asce 7 10 used for design of tall walls.
This is intended to help users experience the changes interactively.
1 1 maximum available length is 20.
2 based on 115 duration of load snow areas.
For details call 1 800 668 2642 or visit our website at www cmhc ca.
The tables permit a bearing length of up to 3 5 inches but since 1 5 is probably the worst case that you ll encounter for joist or rafter bearing it s a safe value.
Interior framing use iprostud in clarkdietrich itools to quickly lookup the interior framing system you need.
