WebMar 8, 2024 · The problems: 1) pressure treatment: I would NOT use pressure treated material. they are adding liquid to the member...which creates more drying out and more warping, and 2) larger boards (use 2x6's rather than 2x4's) which will twist more than smaller boards as more moisture will need to be removed, (incidentally, increasing the … http://www.summerville-home-inspector.com/content/how-splice-joist-or-rafter
Is it legal to bore holes through roof trusses to install wiring?
WebOct 10, 2024 · It currently has 2x4 roof rafters spaced 24" with collar ties about a foot below the gable peak, so 5-6 ft long ties. Seems a 2x4 SPF #2 should really only span about 6 ft horizontally, using the American Wood Council online calculator. Why on earth do I have 2x4 rafters 24" on center? It's a long story. WebMar 20, 2024 · The horizontal bottom chords of most garage trusses are designed to carry the weight of drywall and insulation. So if your ceiling is unfinished, you have some excess carrying capacity up there: 5 lbs. per … rough fragments crossword clue
Strengthening existing 2x4 joists to create a mini attic
WebAug 27, 2024 · It would allow for more insulation and I would like to put in some heat in this space later. This seems to be a lot more cost effective than replacing the entire structure since the existing hip-roof structure seems to be in good shape although the rafters meet up at the studs every 24". WebRafter ties should be at least 2 x 4 inches (51 mm × 102 mm). Other facts about rafter ties: Rafter ties are always required unless the roof has a structural (self-supporting) ridge, or is built using engineered trusses. A … WebJun 8, 2016 · It looks like the answer is "probably not." If this calculator from the American Wood Council is to be believed (and if my assumptions about your materials and load are correct), the max span is about 10ft for a pine 2x6. This table agrees that 10-12ft is the max span for typical grade lumber, at typical spacings, for a 5psf dead load. rough for sale