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I am building a residential home on Superior Wall Precast
Second opinion] I am building a residential home on Superior Wall Precast Basement walls. I have a partial screened in porch on the rear. I want to install a suspended concrete slab in this area. The … read more
walkereng
walkereng
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I would like to make a circular hole in a concrete ceiling.
hello, I would like to make a circular hole in a concrete ceiling. The ceiling is 25cm thick reinforced concrete with a grid of rebar inside. The total span of the ceiling (size of the room) is 4m x 6… read more
StructuralEng
StructuralEng
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My contractor just installed a concrete slab foundation for
Second opinion] My contractor just installed a concrete slab foundation for a new 14x18 sunroom on the back of my house. My wife sent me a picture while they were almost halfway done and it's clear th… read more
StructuralEng
StructuralEng
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How many inches of concrete does your driveway need to be to
How many inches of concrete does your driveway need to be to support a cement truck with a 10-12 yard load?… read more
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walkereng
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I have a client that wants to move a drain 5 feet in a
I have a client that wants to move a drain 5 feet in a fourth floor condo - the structure is concrete. (Commercial) it would involve cutting a trench five feet dropping a 1/4 inch Fer foot. (With drai… read more
StructuralEng
StructuralEng
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I am putting together a letter explaining to the building
hello! I am putting together a letter explaining to the building owner that his existing 6 inch concrete slab on grade can support his new*****machine. I ran numbers calculating the initial required t… read more
StructuralEng
StructuralEng
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We are installing a poured concrete bridge over a current
We are installing a poured concrete bridge over a current low water crossing. It will be approx 1.5 - 2 feet high and 16 feet across, reinforced with 2 layers of number 5 rebar with 12-inch centers fo… read more
walkereng
walkereng
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I have an existing basement slab-on-grade, approx. 2-years
I have an existing basement slab-on-grade, approx. 2-years old. There are portions of slab that have settled, cracked and require replacement. The original building is going to remove these sections and re-pour. The correct method is in question. Slab is approx. 3.5" thick, non-reinforced, 6-mil vapor barrier. I would assume the builder will saw-cut small portions to be removed. Diamond Dowel and epoxy. I am considering an independent testing agency to determine the existing compaction rate as a "Baseline". Ultimately the builder and Eng or record shall determine the corrective action, I will be observing, and want to make sure work is proper. I looked throught IRC and ACI, and was not able to find specific means & methods. … read more
walkereng
walkereng
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I have a new construction home being built with a porch that
I have a new construction home being built with a porch that is to be poured over a basement storm shelter. I am getting conflicting advice from contractors and having difficulty in my small town find… read more
StructuralEng
StructuralEng
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Would like information needed to order steel beams to
Would like information needed to order steel beams to support a 6 IN concrete slab. Slab size is 28 FT by 28 FT. Slab will sit on top of 10 IN CMU walls. Need to install steel beams to support slab, 5… read more
StructuralEng
StructuralEng
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I had a 10' x 16' x 5" thick concrete slab poured for a
I had a 10' x 16' x 5" thick concrete slab poured for a shed. Gravel base was compacted after top soil scraped off, with 1/2" rebar placed at 3' OC, no turndowns were used. The issue is the slab is ou… read more
StructuralEng
StructuralEng
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I need to use concrete to level the floor on a second floor
I need to use concrete to level the floor on a second floor apartment. The apartment is 700 square feet. The existing floor is made of concrete. How much weight can the floor safely hold?… read more
StructuralEng
StructuralEng
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What size Glulam beam with a 24 ft span 2 foot on center with
What size Glulam beam with a 24 ft span 2 foot on center with 3 1/8 plywood glued and screwed be required to support a 24 x 32 ft renforced concrete slab 7 1/2 inch thick?… read more
StructuralEng
StructuralEng
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I am building a structurally contained room to hold back
I am building a structurally contained 'room' to hold back a hill. I now need help to add a structural slab over the 6'x6' rooms. The walls are 6" thick.… read more
walkereng
walkereng
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We have a sagging triple lam beam in the basement causing sagging
We have a sagging triple lam beam in the basement causing sagging in main floor wood flooring. Do we need to create concrete piers for floor jacks or can we just put the floor jacks onto the concrete … read more
walkereng
walkereng
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I have a room under my garage. The cement in the garage was
I have a room under my garage. The cement in the garage was breaking up in areas that I filled in with a commercial concrete product. One area in the ceiling of the room below has some of the concrete… read more
StructuralEng
StructuralEng
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Seven years ago I built a 30 by 40 by 16 feet high metal
Seven years ago I built a 30 by 40 by 16 feet high metal barn. It has a 4 foot seep cellar, so the building inside is 20 feet tall. The foundation is 12-inch thick rebarred 35,000 test concrete, but I… read more
walkereng
walkereng
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If I wanted to pour a 22x22 slab of 7,000 psi concrete at
If I wanted to pour a 22'x22 slab of 7,000 psi concrete at 2' how should the ground base be prepared to pre vend settling or cracking of my slab. And how much rebar should be placed?… read more
StructuralEng
StructuralEng
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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