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107 questions
13
votes
2 answers

Is a roofing delivery truck likely to crack my driveway slab?

I am having shingles delivered. The truck weighs 62,000 lbs, will this crack my concrete slab driveway? Also, they plan on a dump truck in the driveway to throw shingles from the roof. I am not sure what weight the dump truck is.
Ruth Blanch
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8
votes
5 answers

Is this wall load bearing? Blueprints and photos attached

I would like to remove the highlighted wall on the second floor of my house in order to create a loft area. Please help me identify if I'm dealing with a load bearing wall.
Daniel Caviedes
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6
votes
4 answers

Garage loft max loading

How much load can this garage loft handle? The garage is 24' wide. The floor of the loft is 2x10s 24" OC. Those are 2x6s to the left of the plates (the 2x10s run all the way from those left plates to the right wall). All the vertical lumber is 2x4s.…
Matt Thomas
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5
votes
2 answers

Determining ampacity for 3 phase panel with single phase loads

I am an electrician seeking clarification on determining the ampacity for a 3-phase electrical panel with balanced single phase 2P loads. I have a specific scenario and would appreciate the expertise of the community to guide me in the right…
Michael Frank
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5
votes
2 answers

Can my floor hold 2100 lbs of dead load?

I'll admit I don't get how to compute how much my floor can hold, and probably wouldn't trust my own math, even if I came up with the right answer. I'm looking to purchase a recording booth. I do voice-over work. There's one for sale in my area that…
tryingmybest
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4
votes
9 answers

When running a bigger wire to deal with voltage drop on a 240V circuit, do I now need to run a neutral as well?

I am running wire for a 240 V, 20 A split-system AC over a hundred feet and the voltage drops below the allowed NEC 5% voltage drop. So I have to step down the a wire a gauge and run a #10 wire which will allow me to send the correct voltage.…
Samuel Lee
4
votes
3 answers

How do you calculate the horizontal force created by a load hanging from hinges with a hinged bend (as in a hangar door)?

I am trying to calculate the horizontal force created by a raised hangar door, but for the purpose of this question, we can consider the horizontal force of a 2x4 stud that is connected as shown in the illustration below. The 2x4 is cut in half and…
brentonstrine
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3
votes
1 answer

Is this wall load-bearing or not?

A few months back, I purchased a home (built in '57). During the walkthrough and home inspection, there was a wall between the kitchen and living room with an opening on the far end near the exterior wall. The wall that was about 65" was taken down…
Billy Cash
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3
votes
1 answer

Does my electrical service have capacity for an 80A EV charging circuit?

Per @Harper-ReinstateMonica, asking a new question as a follow up to the previous question found here (What TYPE of wire should I install to future proof this install?). Need help doing an electrical load calculation. First, high res pictures of my…
Alex
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3
votes
3 answers

Will a typical house floor carry a 300 lb. safe?

I am going to upgrade my home safe. The safe will be on the second floor, which is the top floor. The safes I am looking at weigh 350 to 500 pounds. I could probably get by with a 300 to 350 pound safe. I mentioned this to a contractor who is…
ab2
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3
votes
3 answers

Max load on a 30Amp Sub Panel

1st post so go easy :-) and hoping someone can help. I am currently investigating the feasibility of this and whether to approach an electrician on it (i.e. is it even possible without massive rework). I have a 100Amp main panel which has a 30Amp…
RossMcC
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3
votes
2 answers

Do breaker trip curves ever begin BEFORE the load printed on the breaker handle?

It's commonly accepted that the continuous load of a circuit should usually not be more than 80% of the rating of the lowest ampacity link in that circuit. Do breakers ever 'enforce' this de-rating by being designed to intentionally trip at a load…
Billy left SE for Codidact
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3
votes
1 answer

Shower divider wall – load bearing?

Redoing the shower in the master bathroom on 2nd floor and debating whether to knock out a wall and put in a corner glass enclosure. Started by removing framing to make 7’ shower to an 8’ shower. Easy enough. Now I need to know whether the small…
jordank777
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3
votes
2 answers

simple niche/nook shelf: boards resting on screws

I have a niche/nook in a room (marked red) and some leftover chipboards of width 16mm. Together they should make a simple shelf. So I would cut the chipboards to the same width/depth as the niche/nook (minus some mm) and for each board drill 4…
Kjara
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2
votes
1 answer

Is this load bearing wall?

This is a 10' wall with the roof joists running on top of it. Really doesn't seem like it's supporting much. It's pretty flimsy except the newer cutout for the opening that was installed. Would a strongback be sufficient to keep the roof joists form…
Mark
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