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Concrete deck over sand. I had a suspended deck 14x36 and 4
I had a suspended deck 14x36 and 4 inches thick. I removed the concrete and filled the space with sand. It is 2 foot high on one side and about 4 feet on the other. It does have concrete block support on the front and one side. The sand was not compacted when they put it in. What do I need to do to make it ready to pour concrete? If I use rebar what size grid. If the sand settles after the concrete cures will that cause any issues? … read more
walkereng
walkereng
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I am pouring a monolithic slab. I want to know if I can pour
I am pouring a monolithic slab. I want to know if I can pour in two phase. If so, how long do I need to let the footing cure (or the first pour) before pouring the second?… read more
walkereng
walkereng
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We live in an older house (1950s) that we recently found out
Hi we live in an older house (1950s) that we recently found out has a stem wall, but no footing. It also has settling issues. My question is can we install a seriers of block and piers underneath the … read more
PaulP324
PaulP324
consulting engineer
MS
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Can you help with a question about pouring a concrete slab
HI can you help with a question about pouring a concrete slab over 5- foot square, 10-foot deep walled void? … read more
PaulP324
PaulP324
consulting engineer
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I need a concrete contractor for a 92 inch by 92 inch by 3
I need a concrete contractor for a 92 inch by 92 inch by 3 foot hot tub i put on a wood deck. the wood deck is made of 2x8 for a ledger and double 2 x 6 joists 9 inches on center. the dimensions of th… read more
PaulP324
PaulP324
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Building a retaining wall of cement block (standard 8x16x8
Building a retaining wall of cement block (standard 8x16x8 blocks) that is not mortared but is filled with concrete and using vertical rebar every other cell. Up to what height can such a wall be buil… read more
StructuralEng
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We are building a home in Southern California that will have
Hello. We are building a home in Southern California that will have a 4” concrete slab, just a small apartment in the backyard. I have dug a trench along the border 1' wide and 2' deep. I have 4” of 3… read more
StructuralEng
StructuralEng
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I'm building a bridge with an 8 foot span over water. The
I'm building a bridge with an 8 foot span over water. The bridge will be 12foot long by 17 foot wide. I am using 12 inch beams 14 lb per foot with 4 inches of 5000 psi concrete. How much weight will t… read more
StructuralEng
StructuralEng
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I have a weird one. I want to build a vaulted structure,
I want to build a vaulted structure, surface-bonded block walls filled (the area surrounded, not the blocks) with sand mounded and wet, then sand-cast the roof and fill the blocks in a monolithic pour. It will be two parallel sections 12'x18', 9' tall walls, about a 3' mound above wall top. I don't know how to figure out what reinforcing I need and how thick to make the concrete. There will be only a minimal load on top, the outside walls will be backfilled. … read more
StructuralEng
StructuralEng
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Another project I am doing is adding on to my shop its a
quot;For Shannong" another project I am doing is adding on to my shop its a monolithic slap I belive 18" thickened edge I am going to add on 12' wide by 34' long except im going to do a basement so th… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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I am building a root cellar that is 14 ft wide and 90 ft.
I am building a root cellar that is 14 ft wide and 90 ft long. The footings are 8 x 24 inches with 3 5/8 rebar in them. There will be 8 in block wall 8 ft high with # 5 rebar every other row horizonta… read more
StructuralEng
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I want to pour a concrete slab roof for a bunker that is 20
Second opinion] I want to pour a concrete slab roof for a bunker that is 20 feet by 31 feet; with 8 inch thick walls and a 6 inch floor that is all 4000 psi concrete with 3/4 inch rock. It will have a… read more
StructuralEng
StructuralEng
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I need some help with a floor that I would like to pour. The
Hello I need some help with a floor that I would like to pour. The foundation is 8' X 20' outside with 8" thick. I would like to pour a floor 4"-6" thick with rebar and pex tubing to potentiall draw h… read more
StructuralEng
StructuralEng
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I have 3 w24x84 I beams that are 39 feet that I plan to use
I have 3 w24x84 I beams that are 39 feet long that I plan to use to build a bridge. How much weight will they hold?… read more
StructuralEng
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I want to add a front porch to an entirely brick veneer house.
I want to add a front porch to an entirely brick veneer house. The location of the front porch already has a pad. The front of the pad rests on block wall on footers designed for a future front porch.… read more
StructuralEng
StructuralEng
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Bachelor's Degree
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I am building 40 foot long by 12 feet high cement retaining
I am building 40 foot long by 12 feet high cement retaining wall which will hold up a soil based hill. I have used 3/4 inch re-bar with a 12" grid. I have angled the wall into the hill on a 28 degree … read more
StructuralEng
StructuralEng
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Bachelor's Degree
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We have a concrete block partial basement, new construction,
We have a concrete block partial basement, new construction, not backfilled and it is cracked already! There is a large crack running from floor to sill and is getting bigger. It is over 1/2 inch at t… read more
walkereng
walkereng
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A second story concrete floor 20 feet by 20 feet with a steel
A second story concrete floor 20 feet by 20 feet with a steel been at centre (10) feet. 5 inches of concrete. What size been what size rebar and spacing. For a concrete deck on cement block foundation… 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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