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  • How to build up a triple 2x12 deck beam in place
    Hoist the first 2x12 into place, slide it all the way up tight against one side of the bracket and screw nail it into place; Add your plywood spacer, nailing it against the existing 2x12, per your nailing spec; Lather, rinse, repeat with the other 2x12s and spacer Attach the other side of the post beam bracket with screws nails
  • How to build 2x12 beam for long deck - DIY Home Improvement Forum
    I am working on a 32' wide deck, and will have a 2x12' beam spanning the 32' length My plan was to nail the two 2x12x16's together per code forming the beam to cover 1 2 of the distance, then have them meet at the center 6x6 post However, I was wondering if it would be better to overlap the beams so the joints were staggered, thus creating a
  • Bolting a built up beam together - Fine Homebuilding
    This beam holds up my breakfast room (12x16) Three people looked at the size of this beam and all agreed that 2ea 2x12 treated boards nailed together would be enough to support the load Being an engineer has given me the insight to realize that nothing is perfect and things need to be checked multiple times Working as a carpenter for the
  • Beam four 2x12s thick - Woodworking Talk
    As pricy as 2x12's are my first choice would be a steel I beam A 10-26 beam will never sag on you If there isn't a lot of weight on the beam you might be able to use a 8" beam If there isn't a lot of weight you could also get by with 2 2x12's if you would run a dado in the middle and sandwich a piece of 1 4"x6" flat steel in the middle
  • splicing 2x12s to get longer member 2 - Eng-Tips
    The U S Department of Agriculture, Forest Products Labs has looked into bending in bonded multiple-member wooden beams Their conclusion is that for common grades of lumber bonded 2-ply beams perform better than two separate individual members See "Bending Strength of Vertically Glued Laminated Beams with One to Five Plies" at this link:
  • 3 Nails for Making Three 2x12s into Built Up Beams? - Small Cabin
    Good footings Good tube size Three per beam would be much better If the joists are resting on top of the beam all the fasteners in the beam do is hold the 3 layers together and keep the beam from twisting They do not contribute to resisting any deflection (bending) strength Nails are fine
  • How to build a three-ply laminated 2x10 beam and what fasteners to use
    How to build a three-ply laminated 2x10 beam and what fasteners to use by Patrick (Long Island, NY) I am building a ground level deck (max 24" of the ground) It is L shaped and will have 2 long beams (27 5' and 31') The beams will be 3-ply PT SP#2 2x12's using 12' long lumber cut to fit the distances between the supporting posts
  • How to Build a Stronger Deck Beam for a Sturdy Outdoor Space
    Clamp and Screw Deck Beams Together Stack two beam pieces with the spacers sandwiched between Align the ends and clamp them together Drive 16d galvanized box nails or 3-inch screws every 16 inches, alternating the distance from the edge of the beam Add the third beam piece and repeat the process Optional: Sandwich a Post Between Beams
  • Is it safe to build a long beam from shorter pieces of lumber?
    This beam was made of gluing and nailing three 2 x 10 (or 2x12) lumbers This beam is also supported by two lally columns across the span The garage was built as attached in 1990-96- I believe My question is that the length of the each 2x12 board they used to make my beam is 16 ft long, but garage is 24 ft long
  • Creating a beam with 3 PT 2x12s, got questions
    I have hot dipped galvanized that just showed up I built the first beam and bolted together, and will need to swap out bolts for the HDG ones I am happy with how the first beam came out The second beam is much more complicated with joints and is 32 feet long My tendency is to want the top of the beam to be as flush as possible





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