[snyderman5]

I am in the planning stages of a shed build. Will be 8' x 16' A frame roof and 2 x 4 walls 16oc. What size lumber can I use for the trusses. In south jersey.
Thanks
will have shingle roof

 

[tbishop]

To be safe I would check with your local code enforcement office, it the shed will be considered a permanent structure. If it were mind I would use 2x6's, due to the possible snow load you may have in the winter

 

[Scuba_Dave]

Also depends upon how high the peak is - slope of the roof
2x4's would do it
2x6's would insure long time success against that freak heavy snow storm
But a steep roof would also work at preventing snow load

Span calc:
http://www.awc.org/calculators/span/calc/timbercalcstyle.asp

 

[Gary in WA]

Which way do the rafters/trusses run?

2x4's wouldn't work if 16' span, or 8' under UBC.
(only span 7'10" IRC, 0 for UBC-- require 2x6 min. even 12"o.c.)
And that's with no snow load.

Be safe, G

 

[Scuba_Dave]

I'm getting 7' 10" Max span w/snow load on Hem fir #2 which is what is available from big box store
16' A frame/2 = 8' span - 8" walls = 7' 4" actual span ??

 

[Gary in WA]

"16' A frame/2 = 8' span - 8" walls = 7' 4" actual span ??" Span of rafter is measured from outside wall to center line. 16'/2 = 8' 8'. The only time to measure from something is (UBC 2320.12.7)Rafter span can be measured from purlin support Under IRC, 2x4 spans 7'10", not 8'. Under UBC, can not use any 2x4's for rafters. Hence, I gave two codes, as I don't know which one his local jurisdiction is under.

Be safe, G