Manfred, that is exactly the solution I was going to offer. Well executed, form follows function, it should be aesthetically pleasing as well.
Max Dillon Charleston SC Wed Nov 06 21:36:55 EST 2019 MG via Mercedes <mercedes@okiebenz.com>: > I'm not an engineer and haven't even played one on > TV so I'm not making any claims that this will > work for you. > > What my dad and I did on the porch we built on > his house was to run cables with turnbuckles for > adjustment from both inner corners to the opposite > outside corners of the roof. That has held for > over 35 years. Going just to the center may work > but probably not as well. > In his porch the walls are sliding glass doors and > the roof is aluminum 2x8 hollow beams with > fiberglass corrugated panels on them. Probably > less resistance to shifting and racking than the > roof you have with the plywood. The whole porch is > about 20x35 with monolithic slab on the ground so > no racking or shifting of the floor there. In your > case I might be very easily talked into doing the > same cable tensioning under the floor just because. > > MG > > Randy Bennell via Mercedes wrote: > >> On 06/11/2019 11:23 AM, Curley McLain via Mercedes wrote: >> >>> Not registered, but I have done some on various projects. Truss >>> design, floor /roof load bearing etc. What are you working with? >>> Wood? Steel? concrete? combination? >>> >>> Randy Bennell via Mercedes wrote on 11/6/19 11:19 AM: >>> >>>> I have a question I would like to pose to someone who knows more >>>> about the subject than I do. >>>> >>>> I won't bore you with the details unless some one or more of you >>>> folks think you can offer some insight (or, maybe I will anyway, but >>>> I will need to figure out how to describe the issue first unless I >>>> post photos or drawings too). >>>> >>>> Randy >>>> >>>> >>> >>> >>> _______________________________________ >>> >> >> I shall try to describe the issue in words but if that proves to be a >> problem, I will either post some sketches or photos or both. >> >> We have a screened porch on the back side of our house. It is roughly 10 >> X 20 and the inner side is attached to the top of the basement wall of >> the house. The outer edge of the deck sits on a laminated beam that >> rests on 3 bell piles. >> >> The "walls" are essentially 4 X 4 cedar posts standing on the deck and >> attached to a rim joist at the top. There are removable screen panels >> installed between the posts. There are 4 panels on the outer wall >> parallel to the house and 3 on each end. >> >> The roof consists of a shed roof of 5/8 or 3/4 (cannot recall which) >> plywood on 2 X 10 rafters. The inner end is attached to the wall of the >> 2 storey house. The outer ends sit on the rim joist attached to the top >> of the posts. >> >> We built this in the summer of 1984. It sat pretty much perfectly true >> for many years. However we have had some dry summers and the porch and >> the house have moved a bit. The bell piles settled and a couple of >> summers ago I jacked the outer edge of the deck up about 4 inches along >> its length and inserted blocking on top of the 3 piles to level the >> porch as it was then lower on the outer edge than on the inner edge. >> >> The outer wall of the porch also began to lean to the south. It was out >> by 2 inches or more on 8 feet. This summer, I pulled it back to plumb >> using a chain come-along. >> >> My issue, is how to further brace it so that it will hopefully retain >> the current plumb status if I remove the come-along. I do not really >> want to put angled bracing in the "wall" of screens. My plan has been to >> put diagonal bracing in what would be the ceiling if it had a ceiling. I >> have collected materials to make 2 roughly 10 foot steel rods with turn >> buckles in them that I propose to install. The plan is to attach the >> inner end of one to the rim joist at each end where the rim joist meets >> the wall of the house and to attach the outer end to the rim joist at >> the middle point of the outside wall. >> >> I do wonder if this will be sufficient to hold the porch in place. The >> plywood sheathing on the roof obviously did not prevent the wall from >> leaning and I assume that my steel rods must act somewhat similarly to >> the roof sheathing. >> >> Opinions will be appreciated. >> >> Randy >> >> >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
