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Attic strongback 22.
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Span per irc tables was 17 5 for the ceiling joists but what we have here is 19 feet seperated by interior wall and 9 feet at the other side.
From attic pull down stairs to electric stairs we ve got it all.
The stairway shop has a wide selection of attic staircases.
Strongback bridging is an excellent and inexpensive way to improve the overall rigidity of the floor system and eliminate vibration.
So at midpoint 27 feet divided by 2 13 5 feet in the attic over the ceiling joists the dp added a double 2x12 strongback.
Mark 22 1 2 degree angles at one end of each brace using a builder s square.
The round tube sections will be drilled for a pin in the appropriate places to hold the hull at the desired angles.
The werner wood universal fit attic ladder features the werner wood universal fit attic ladder features a 250 lb.
Strengthening attic joists for live loads by sistering.
The attic itself is 15 wide by 22 long.
Install 2x6 strong backs running the length 22 feet of the attic.
Strongbacks can be altered to allow hvac installations as long as three 3 consecutive joists are attached.
So stop worrying about how to install an attic ladder and let lowe s coordinate your attic stairs installation.
If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists.
Sistering is the process of adding a new joist next to each existing joist.
It serves to make the floor more comfortable for those living and working in a structure.
The wooden joists or beams over your garage help hold your roof in place.
Lowe s will coordinate your attic ladder installation service to remove your old attic ladder handle your new attic stair installation and haul away the old unit.
The only other issue i have left to resolve is what type of flooring material to use.
Contact lowe s today to help with installing attic ladders or.
I envision welding or bolting forms and or stations jigs to the strongback for forming the longitudinals and hull plates.
Cut the angles with the saw.
888 243 3339 an announcement about covid 19 and the stairway shop.
Weight capacity designed to fit ceiling heights from 8 ft.
These will be the upper ends that attach alongside the cleats.
And standard ceiling openings of 22 5 in.
The span of the strongback is about 7 feet.
If you have an attic over your garage these joists also bear the load of your attic flooring and any materials you store in the attic.
I m talking about a 14 15 boat hull that will weigh maybe 200 spread over the length of the strongback.
If you need a storage area above your garage strong ceiling joists are necessary to support the added weight.