HomeMy WebLinkAboutB16-2164 000-000-000Sumrnit Struclural Design
Project: Erwin Residence
Engineer: RKB
Design of: Roof Framing (Conventional)
Roof Loads
DL= 18 psf
LL= .20 psf
Roof plywood:
1/2" APA rated Ext(!rlor plywood or OSB. Apply face grain perpendicular to
framing, stagger panels and nail with 8d at 6" o.c. edges and 12" o.c. field. Edge
nail at gable ends, drags strap lines, blocking, and all supported edges.
Roof framing:
Cut -and -stacked roof systems shall be built to the conventional framing requirements
of the 2013 CBC (Cl3C 2308.10). Purlins, braces, intermetiate supports, and
connections shall be pro ' vided by the contractor which are capable of transmitting all
gravity and wind loads to the foundation. The following additional limitations shall apply:
1. Rafter Maximum Spans
a. 2X4 DF -L 42: 6'-0"
b. 2X6 DF -L IQ: 121-011
c. 2X8 DF -L 42: 13'-0'0
d. 2XIO DF -L 42: 16'-9"
2. Minimum Brace Size 2X6
3. Max Brace Spacing= 4'-0" o,c.
Typical Headers (U.N.O.)
Use 6X8 DF42