Ok, I need some advice and this seemed to be the best forum to ask in. I live in Anchorage and want to build a detached 12’ x 16’ “Man Room” kind of thing in the back yard. I know it isn’t exactly a “cabin” but I figure the construction aspects are pretty much going to be the same. It will not have any plumbing, but will have electric and gas tapped off from the house.
My biggest problem is that I don’t know any of the calculations for determining anything… in fact, I don’t know jack about building construction. Normally this lack of knowledge would cause me a great amount of anxiety, however my bro-in-law recently built a very nice detached shed/garage that looks like a crew of professionals did all of the construction… the only reason I mention this, is because my bro-in-law is a first order idiot. Make that a drunken idiot… anyway, I figure if he can build something, then it aint exactly rocket science. Besides, I am actually quite experienced at wood working albeit on furniture, cabinets, interior stuff etc. so I have all the tooling and enough skill not to loose any appendages or fire a brad into my brain in the process.
First off is the foundation. The ground in my yard is awful, and its pretty much topsoil over clay, but is at least fairly level. This “Man Room” is going to sit right on top of the 20” sewer easement and although I seriously doubt it will be an issue, I still want to have some sort of back up plan for dragging the whole thing out of the way if need be, so obviously sonotubes or posts are out of the question. I was thinking about two rows of three pressure treated pads (made from pressure treated 2” x 6” cribbed up about three layers) and then place two 16’ x 6” x 12” beams across them and then 2” x 12” joists on 16” centers. I figure if worst came to worst, I could always jack the building, pull the pads out, set it on the ground and drag it out of the way? Of course to complicate matters, the way I want it to sit in my yard would require me to drag it sideways… so I plan on bracing the two 16’ x 6” x 12” beams together with two more perpendicular beams between them and secured with some really heavy duty welded angles that I have laying around.
I am thinking 2” x 4” walls 16” on center with 2” interior furring strips over the visqueen, and plan on only 2 windows and a single 36” door. Tyvec the exterior and cover with siding to match the house.
I don’t have a clue about the roof and rafters and am hoping you guys can offer some suggestions as to what pitch, material and spacing. I do want to shingle it to match the house.
I have a lot more questions, but don’t want to post a giant list and annoy everyone with my ignorance.
Thanks in advance for any ideas or advice you would care to offer!