Questions tagged [deflection]

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1answer
107 views

Can I replace the engineer's I-Beam recommendation with a different one?

I'm removing a load bearing wall and the structural engineer recommended a W8x15 steel I-beam. It would save me a lot of effort if I could use a 6" beam instead. So I'm trying to calculate the ...
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2answers
55 views

Tile over 2x6x1.5 T&G subfloor, spanning 48" beams

Long time lurker, first time poster. I think I might have a solution to my problem but I'd like to get some peer review on it before I start work. I'm remodeling a master bath (50sf, 10x5) in a 1966 ...
1
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1answer
37 views

Span calculator using arbitrary spacing?

My "new" 72-y/o house is... interesting. The garage is much younger but still I just raise my eyebrows at some things. One of them is the loft/attic area in the garage. I wanted to move all my ...
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1answer
33 views

will any glue bond 2 long, bendable metal components

I am trying to create stiffness on an 8-foot length of 1/4" acrylic, with minimal visual footprint. I hit on an 8-foot aluminum U-shaped channel (slips right over top of the acrylic), but it wasn't ...
1
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2answers
143 views

Backer board bowing on 24" inch steel studs for rock ledger panel installation

I wanted to screw Hardie backer board (.42") over my drywall to the steel studs to adhere 6" x 24" x1" stone ledger panels using polymer modified thin-set, floor to ceiling is 12'. Problem is that ...
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4answers
449 views

Steel tube deflection over span

I am installing 16' desktop to a concrete block wall. The back wall and one side will sit on a 2x4 ledger. The opposite short side will be a solid plywood panel to help support weight. The top will ...
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2answers
935 views

Can I modify a roof truss by removing purlins and kickers?

I have an attic space I'd like to make more user friendly. The rafters are original 2x4's, same goes for the purlins, and the kickers. The span is approx 12 feet. This particular space is over a ...
2
votes
1answer
256 views

Increasing subfloor thickness under new shower pan

I ripped my old shower down to the studs and joists. The studs were rotten, the subfloor was rotten, and the top of the joists (in some places) were weak and rotten. I plan on replacing some studs ...
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1answer
564 views

How to correct possible subfloor l/360 deflection under live load, when basement below is finished

Installing porcelain planks 6"x 36" with 11mm thickness, in main floor Living room that was previously carpeted. House is 2 story town, 13yrs old. Room size across W 18' x Length joist span of 11.8'(...
11
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1answer
5k views

How do I correctly install ceramic floor tile?

How do I correctly install ceramic floor tile? There's lots of talk about using backerboard and waterproofing membranes, what an acceptable floor deflection is, different grout and thinset additives, ...