Best answer
And yes, mesh is important: Concrete is strong in compression, but not under tension. So, if it flexes, like a slab with a vehicle on top of will do, it cracks at the bottom whre the flexing becomes tension. Steel mesh will prevent this to a large degree and hold it all together.
How many bags of concrete do I need for a 6x6 slab?
0.667 cu. yds. How many concrete bags would I need for a 6 ft x 6 ft x 6" slab? 29.9 x 80lb Concrete bags.
How much concrete do I need for a 12x20 slab?
Concrete Extras With a brief look, a 12x20 area at 6 inches deep, you would need approximately 6.31 tons or 4.44 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas.
Do you need to prime cement board before tiling?
Do I need to prime HardieBacker® board before I tile onto it? No. HardieBacker tile backerboard is ready to tile once installed, just wipe down with a damp sponge to remove any dust prior to tiling.
How many bags of cement do I need for a 2 bedroom house?
40 bags
Can you lay concrete without rebar?
It's false economy to do concrete without putting in rebar and mesh.
Rebar around the perimeter at the least, and mesh over the rest.
Pull it up when pouring so it is not resting on the bottom of the slab.
You don't need the fancy rebar supports, a stone or broken brick will work just as well..
How many bags of concrete do I need for a 6x6 post?
As I recall, a 60# bag of concrete is about . 5cf, so you'd need 3 bags per hole.
How many bags of concrete do I need for a shed base?
Cement wise i would pour the base at 5-1 so you'll need maybe 7 bags of cement. If you still want to pay a fortune to buy your ballast in small bags get the 25kg ones and you will need approx 30 bags.
What is a structural concrete slab?
A concrete slab is a structural feature, usually of constant thickness, that can be used as a floor or a roof.
A slab-on-ground is supported on the subsoil and is usually reinforced with reinforcing bars or welded wire mesh..
Do I need to drill a pilot hole for concrete screws?
Unlike self-drilling screws which do not need pilot holes due to their drill bit end, self-tapping screws like concrete screws do require the user to mark a spot for the pilot hole.
How many bags of concrete do I need for a 3 foot post hole?
I normally use post hole diggers (6" diameter?) 3 feet deep and ½ a bag of redi-mix per post.
Related Question Answers

Matías Fidemraizer
ProfessorHow many bags of concrete do I need for a 6x6 post hole?
As I recall, a 60# bag of concrete is about .
5cf, so you'd need 3 bags per hole..

Stefan Steinegger
ProfessorHow many bags of concrete do I need for a 8x8 slab?
How many concrete bags would I need for a 8 ft x 8 ft x 6" slab? 54 x 80lb Concrete bags. How much does it cost to pour a 8'x8' x6" slab? Ready-mix costs approx $277.86.

DuncG
ProfessorHow many yards of concrete do I need for a 16x16 slab?
With a brief look, a 16x16 area at 6 inches deep, you would need approximately 6.73 tons or 4.74 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas.

squareskittles
ProfessorCan I use drywall mesh tape for cement board?
No. The Mold-X10 fiberglass mesh tape is made for drywall seams and intended to be coated with joint compound. FibaTape's Cement Board Tape is the product for cement board. The alkali-resistant coating protects the fiberglass from degradation that can occur with thin-set mortar.

David East
ProfessorCan rebar cause concrete to crack?
The use of synthetic fibres, reinforcing wire mesh, or rebar can add some extra support to concrete, but none of them will prevent cracking. In fact, too much steel can actually cause a slab to crack by restraining normal concrete shrinkage.

Jordon Phillips
ProfessionalDoes a concrete slab need wire mesh?
YES When long joint spacing is required or when joints are unacceptable in floor use.
Although short joint spacings alleviate the need for reinforcement, wire mesh will allow for increased distance between joints if correctly placed in the upper portion of the slab, at least two inches below the surface..

krish
ProfessionalDo I need rebar for small concrete slab?
You do not need rebar for any slab if you make it thick enough and space the joints properly. Rebar in jointed pavement is there to counter the cupping effect of thermal expansion. I always recommend the use of rebar or at least rewire. Any concrete slab can crack.

JBernardo
ProfessionalHow much cement do I need for a 20x20 slab?
With a brief look, a 20x20 area at 6 inches deep, you would need approximately 10.52 tons or 7.41 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas.

progrmr
ProfessionalDo I need mesh in my concrete slab?
Concrete is strong in compression, but not under tension. So, if it flexes, like a slab with a vehicle on top of will do, it cracks at the bottom whre the flexing becomes tension. ... Mesh will help mitigate the chances of cracking of the slab due to differential settlement.

Martin Brandl
ProfessionalDo I need to prime cement board before tiling?
Do I need to prime HardieBacker® board before I tile onto it? No. HardieBacker tile backerboard is ready to tile once installed, just wipe down with a damp sponge to remove any dust prior to tiling.

Ovidiu Latcu
UserDo I need to sand concrete before staining?
You do not need to sand the concrete before staining unless you are using Acid Stains and the surface to be acid stained is not capable of absorbing liquids..

Francisco Puga
UserDoes 4 inch concrete need rebar?
No, depending on your proposed loads. But a 4″ thick slab really shouldn't have rebar in it, too thin. Most thing slabs, like driveways or sidewalks have a wire mesh reinforcement in them not rebar. ... If your slab is going to be subjected to enough load to need rebar it will also need to be thicker; 6″ or 8″.

Justin Ethier
UserHow can I strengthen concrete without rebar?
If you're not doing a commercial-level project but still want some additional reinforcement for your concrete, a wire mesh is a great (and cheaper) alternative to rebar. Wire mesh use is becoming much more common for projects like a home driveway.

Yanick Rochon
UserDo I need a permit to pour concrete in my back yard NYC?
In general, if you are doing any work which is going to modify your floor plan, then, you do need a permit. If you are going to pour concrete for a patio in your backyard, then, yes, you do need a permit.

Ace
UserHow do I figure out how many bags of concrete I need?
For concrete, the formula for volume is as follows: length x width x thickness. To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield.

George_E
GuestHow much crushed concrete do I need?
Beside above, how much crushed concrete do I need calculator? In the construction world, most materials are measured in cubic yards. Multiply the length (L), in feet, by the width (W), in feet, by the height (H), in feet, and divide by 27. This will tell you how many cubic yards of crushed stone you need.

Anurag Uniyal
GuestWhat size concrete breaker do I need?
When working in hard material we recommend a 7,500 – 10,000-ft.lb. breaker, and if high production is critical, a 13,500-ft.lb. breaker would be beneficial. BREAKING CONCRETE: When breaking Concrete, the breaker is expected to penetrate the material, allowing it to crack and shake loose from the reinforcing steel.

Thaoaaaaa
GuestHow many bags of concrete do I need for a 5x5 pad?
How many concrete bags would I need for a 5 ft x 5 ft x 6" slab? 20.8 x 80lb Concrete bags.

Diziet Asahi
GuestHow many bags of concrete do I need for 3 yards?
You will need 45 bags of concrete mix to make a cubic yard of concrete.

Tom Sharpe
GuestHow much concrete do I need for an inground pool?
Plan on at least 5 minutes per cubic yard, for unloading time. How much concrete do I need? Order this much concrete, for these standard pool sizes. 12 x 24 – 5 yards, 14 x 28 – 6 yards, 16 x 32 – 7 yards, 18 x 36 – 8 yards and a 20 x 40 – 9 yards.

Andrie
GuestWhat are concrete slabs used for?
A concrete slab is a structural feature, usually of constant thickness, that can be used as a floor or a roof. A slab-on-ground is supported on the subsoil and is usually reinforced with reinforcing bars or welded wire mesh.

dariosicily
GuestCan you use wire mesh in concrete slab?
YES When long joint spacing is required or when joints are unacceptable in floor use. Although short joint spacings alleviate the need for reinforcement, wire mesh will allow for increased distance between joints if correctly placed in the upper portion of the slab, at least two inches below the surface.

Jon Limjap
GuestDo I need rebar in concrete sidewalk?
Do Sidewalks Need Rebar? Most sidewalks don't need to be reinforced with rebar. Rebar is a steel bar used to reinforce the strength of concrete used to withstand heavy weight. ... General use sidewalks don't benefit from the addition of rebar.

hadley
GuestDoes a concrete patio need rebar?
Rebar is not necessary for every concrete project. ... Wire mesh use is becoming much more common for projects like a home driveway. Reinforcing concrete with rebar or wire mesh not only makes the concrete strong, but it also significantly curtails the number of cracks that appear in that concrete down the line.

TLindig
GuestHow do you keep wire mesh on concrete slab?
Dobies/Chairs: Small concrete blocks or plastic chairs are placed between the base & the wire mesh to hold the wire mesh in the center of the slab. Both come in an assortment of sizes and ensure the wire mesh remains in the center of the slab.

jhnc
GuestDo I need DPM on concrete floor?
Do I need a DPM under laminate flooring? Simply put yes. In order to prevent damp rising through the concrete floor and causing issues, a DPM should be used under all final floor types including wood flooring, laminate, vinyl and floor tiles.

Željko Filipin
GuestCan I put a concrete base on grass?
At the very least you must dig off the grass and a few inches of topsoil. it will just rot and sink. On decent ground you could probably get away without a sub-base for a little 8x6 concrete base. But a base as big as 14x8 is almost certain to crack and fail as it settles if it has no sub-base or reinforcing mesh.

Édouard Lopez
GuestCan you pour concrete without wire mesh?
Instead of laying down a wire mesh before the concrete is poured, using fiber mesh involves mixing in different fibers such as glass, steel, synthetic fibers, or natural fibers. Fiber mesh reinforces concrete throughout the entire structure of the concrete rather than just one plane.

Ilmari Karonen
GuestDo you need mesh in concrete countertops?
“No material more than 3/16-inch in diameter should be used in a countertop less than 3 inches thick.” ... Ladder wire and wire mesh are used by many concrete countertop contractors, and for good reason: Both materials are strong and small enough to use effectively in countertops.

Shailen
GuestDo you need steel in concrete slab?
Concrete that carries heavy loads (such as footings, foundation walls and columns) almost always requires reinforcing steel. Not all concrete work requires reinforcing though. Concrete projects such as pathways, some driveways and small shed or playhouse floors, generally do not require any steel reinforcing at all.

nrabinowitz
GuestDo you need wire in concrete countertops?
A good rule of thumb is to use reinforcing less than 3/16 inch in diameter for concrete that will be less than 3 inches thick.
Countertops that use 3/8-inch rebar for strength can develop telegraph cracks on top of the bars.
Reinforcing wire won't cause this problem..

corsiKa
GuestDoes a concrete slab need rebar?
The purpose of concrete reinforcing bar is to provide concrete with greater tensile strength to minimize cracking.
Concrete slabs poured on the ground with a properly prepared and compacted base, and that isn't expected to support heavy loads, doesn't require rebar..

Steffen Ullrich
GuestDo I need wire mesh for concrete patio?
For a concrete patio slab the best method of providing reinforcement is to use either wire mesh or steel bars (rebar) placed in a grid pattern. The use of rebar requires that each of the intersections of rebar be tied together with rebar tie wire. ... This must be done as soon as the concrete is poured.

Paul LeBeau
GuestDo you need to put wire in a concrete driveway?
Wire mesh, like Rebar reduced the cracking and any uplift in the concrete driveway. Rebar will be used if there is a structural reason, meaning you need to carry the weight of the slab to pilings or plan to build above the slab. For a driveway, just use the wire, lap it one box around.

JellicleCat
GuestDoes all concrete need rebar?
Concrete that carries heavy loads (such as footings, foundation walls and columns) almost always requires reinforcing steel. Not all concrete work requires reinforcing though. Concrete projects such as pathways, some driveways and small shed or playhouse floors, generally do not require any steel reinforcing at all.

Kip
GuestWill concrete crack without rebar?
Really depends on what the slab is used for but in general no you can install wire mesh or use fibered concrete. However you do need something to tie the concrete it just doesn't have to be rebar. You do not need rebar for any slab if you make it thick enough and space the joints properly. ... Any concrete slab can crack.

Betamos
GuestHow does metal strengthen concrete structures?
The reinforcing steel—rods, bars, or mesh—absorbs the tensile, shear, and sometimes the compressive stresses in a concrete structure. ... In reinforced concrete, the tensile strength of steel and the compressive strength of concrete work together to allow the member to sustain these stresses over considerable spans.

Robert Koritnik
GuestShould I put wire mesh in concrete slab?
Wire mesh makes concrete more durable and increases its strength. The area in which the concrete will be laid down should be covered in mesh before pouring commences.

The Impaler
GuestHow many bags of concrete do I need for a 4x8 pad?
Here is the quantity that you will need for your slab. Quikrete Concrete Mix: 24- 60lb bags.

Sachin Kainth
GuestHow many concrete stamps do I need?
How many stamps do I need for my project? Take your dimensions of your project and figure out which direction you will run your stamps. Next measure what your longest run will be. Ideally you want the enough stamps to cover your first row and 2 stamps for the second row.

Lizard
GuestWhat is better for concrete patio rebar or mesh?
wire mesh, the short answer is: use both.
...
Concrete driveways that need to carry a heavy load should have both rebar and wire mesh to reinforce the concrete.
For a patio, you might be able to get away with using welded wire mesh.
But remember, all concrete will crack and all concrete will shrink..

basarat
GuestWhat do you use on cement board seams?
Use special mesh tape on seams Cover all of the corners, joints and seams, including the joint where drywall and cement board meet, with the fiberglass mesh tape.

Samuel Everson
GuestCan I pour concrete without rebar?
It's false economy to do concrete without putting in rebar and mesh. Rebar around the perimeter at the least, and mesh over the rest. Pull it up when pouring so it is not resting on the bottom of the slab. You don't need the fancy rebar supports, a stone or broken brick will work just as well.

Matthew Layton
GuestCan I use cement board mesh tape on drywall?
Can cement board tape be used on regular drywall? No. Cement board tape is made to be embedded in thin-set mortar not joint compound. We do not suggest using it on regular drywall.

Marco
GuestDo I need gravel under concrete slab?
You do need gravel under a concrete slab, footing, or patio. Gravel provides a solid foundation for your concrete as it can be compacted. It also improves drainage, preventing water from pooling beneath the concrete.

dustin.schultz
GuestDo I need steel mesh in my concrete slab?
No, they do not. Larger projects or slabs may need steel reinforcement to provide support or extra strength. Wired mesh can also help resist cracking. However, not every piece of concrete necessarily requires that extra boost.

Howard Hinnant
GuestWhat should I ask a concrete contractor?
10 Questions to Ask a Concrete ContractorHow much experience do you have? ... Do you have a portfolio of pictures of your previous work? ... Can you provide references? ... What is your schedule like? ... How long will my project take? ... Will you need to obtain permits for my project? ... Will you be reinforcing the concrete with rebar?More items...

Tlerio
GuestDo concrete slabs need rebar?
The purpose of concrete reinforcing bar is to provide concrete with greater tensile strength to minimize cracking. Concrete slabs poured on the ground with a properly prepared and compacted base, and that isn't expected to support heavy loads, doesn't require rebar.

Hashem Qolami
GuestDo I need a concrete slab for a Tuff Shed?
Do I need a concrete slab for a Tuff Shed storage building? No, in most cases. While garages do require a concrete slab, our exclusive steel joist system has more than adequate strength and moisture resistant qualities to provide a solid foundation for your shed on most ground surfaces.

AnApprentice
GuestDo I need a permit to pour a concrete slab?
Do I Need a Permit to Pour a Concrete Patio? A permit isn't automatically required to build an on-grade patio, whether it's concrete, brick or any other material. Requirements vary widely in local governments, ranging from relaxed to stringent.