weight bearing

Hi! I'm a new member with a question I wasn't sure where to put. I am working on putting up bookshelves on an interior wall of my apartment. Here are the facts: 1. building is 30 years old 2. Here is stud pattern: one at corner, the next 16", then 24" apart 3. My shelf is 8.5' long. It...

The end goal is to utilize the vertical space in my 9.5' tall garage for storage. The garage roof has 4 large steel "rafters" at 8' spans and there are metal furring strips attached to the rafters and the drywall is attached to the strips. The question is, how much weight can those strips...

I want to build a 4'X8' shed with a on the garden roof. I will have a 4'X8' box 10 or 12 inches deep on the roof full of earth. I was told that each square foot would weight 100lb when the earth is wet. I live in Montreal so I must also consider 3 feet of snow/ice in winter that will accumulate...

I'm going to pour a concrete slab 10' X 15'. Its purpose is to provide a secure pad for a rectangular shaped 3000 pound water boiler that will be holding 400 gallons of water(3,340 lbs) max. while boiling it off. The question has to do with thickness of the pour, rebar size and lay pattern...

Hi, I am remodeling the basement and facing problem with the old door openng. It sits in the weight bearing wall and had a 2x6 double header. The problem is that the door open is too low, only about 6'2'' high. I intended to replace this double header with some thinner metal support so the...