Decks, Patios, Porches and Docks - Beam

Doityourself.com community forum was created to provide answers to all questions related to home improvement and home repair. Doityourself community can help you find information about how-to topics on small fixes to large remodeling projects. With comprehensive how-to content and expertly moderated community forums DoItYourself.com makes it easy to tackle even the most complex home improvement projects.



PDA

View Full Version : Beam

Louisphillip
10-05-08, 07:48 AM
What size(s) beam I need for a 18' spam for a back porch? I am using Douglas Fir #2. Will a 2= 2x10s or 2= 2x12s work?
I appreciate the input
Thanks,

Concretemasonry
10-05-08, 09:40 AM
Not much information. -

How much do you, your wife and dog weight?

How big an area and what are the joist spans?
Louisphillip
10-05-08, 03:14 PM
Existing concrete slab with already footers. Existing porch roof too deteriorate, will replace but I would like to eliminate the center post for viewing purposes. 8" rafters 24" on center 20' long by 11' deep. I can leave 1' of overhang on each corner, then I have 18" span, I wouldn't like steel beam and I thought, maybe using 2= 2x12x20s or maybe something else as 2= 4x8x20s.

Thank for any input