Best answer

8 to 12 feetUsually, expansion joints should be no farther apart than 2 to 3 times (in feet) the total width of the concrete (in inches). So for a 4 inch thick concrete slab, expansion joints should be no more than 8 to 12 feet apart.

Answered by: kissu Date created: Jun 26, 2022

How far apart should concrete piers be for a deck?

Asked By: Toasty Date created: Jun 19, 2022

8 feetStarting with your perimeter, mark the location of each deck post to locate the fitting position. In general, posts should be spaced no more than 8 feet apart. Some builders position them every 4 feet for a completely rigid frame. The maximum distance between footings is determined by the size of your joist material.

Answered By: Matthew Layton Date created: Jun 21, 2022

How thick should a concrete driveway be?

Asked By: Mr. Alien Date created: Jun 19, 2022

four inchesAs for thickness, non-reinforced pavement four inches thick is standard for passenger car driveways. For heavier vehicles, a thickness of five inches is recommended. To eliminate standing water, the driveway should be sloped towards the street a minimum of one percent, or 1/8 inch per foot, for proper drainage.

Answered By: Jonas Byström Date created: Jun 20, 2022

Should you replace plaster with drywall?

Asked By: Grant Miller Date created: Jun 16, 2022

If plaster walls and ceilings are in good condition — not cracked, peeling, or falling apart — you need not do a thing except paint. If there are nail holes or a few cracks, a painter can easily fix them. ... Plaster should not be removed and replaced by drywall, nor covered up by drywall.

Answered By: Vincent Date created: Jun 17, 2022

Can you pour concrete over sewer line?

Asked By: Adam Gent Date created: Jun 08, 2022

As long as the concrete pours correctly and the line supports minimal weight, it should be fine. The pipe should also be sealed appropriately at any joints to ensure that water from the wet concrete does not seep into any joints damaging the seal of the line.

Answered By: N69S Date created: Jun 11, 2022

How far can you cantilever a concrete slab?

Asked By: vivek nuna Date created: Jun 14, 2022

Cantilevers are usually limited to a span of about 25 to 35% of the back span and should be supported by a stiff support such as a beam or column. They should not be supported off another cantilever at right angles. The deflection of a cantilever is sensitive to the rotation at the support.

Answered By: Alexander Gladysh Date created: Jun 14, 2022

How thick should a cement driveway be?

Asked By: Juanma Menendez Date created: Jun 20, 2022

As for thickness, non-reinforced pavement four inches thick is standard for passenger car driveways. For heavier vehicles, a thickness of five inches is recommended. To eliminate standing water, the driveway should be sloped towards the street a minimum of one percent, or 1/8 inch per foot, for proper drainage.

Answered By: Matt Sheppard Date created: Jun 22, 2022

At what temperature does concrete melt?

Asked By: Ângelo Polotto Date created: Jun 11, 2022

At 450-550 °C the cement hydrate decomposes, yielding calcium oxide. Calcium carbonate decomposes at about 600 °C. Rehydration of the calcium oxide on cooling of the structure causes expansion, which can cause damage to material which withstood fire without falling apart.

Answered By: Trott Date created: Jun 11, 2022

Are concrete expansion joints necessary?

Asked By: shizhen Date created: Jun 22, 2022

Expansion joints are virtually never needed with interior slabs, because the concrete doesn't expand that much—it never gets that hot. Expansion joints in concrete pavement are also seldom needed, since the contraction joints open enough (from drying shrinkage) to account for temperature expansion.

Answered By: Mike Lischke Date created: Jun 23, 2022

How do I fill the gap between concrete floor and wall?

Asked By: Jakub Dóka Date created: Jun 13, 2022

Once a year, go around your home and fill these gaps and joints with urethane caulk (or polyurethane caulk) to prevent problems. The expansion joint caulk is available at contractor supply stores, well-stocked home centers and hardware stores. For gaps and joints more than 1/4 in.

Answered By: Tom Harrington Date created: Jun 13, 2022

How do you calculate expansion joints in concrete slabs?

Asked By: Bernhard Beatus Date created: Jun 18, 2022

The following recommended tips should be observed:Maximum Joint Spacing should be 24 to 36 times the thickness of the slab.Joints should be spaced about 10 feet and a maximum of 15 feet.When using joint groove for contraction joints, the joint should be a minimum depth of ¼ thickness of the slab.More items....

Answered By: Sam Varghese Date created: Jun 20, 2022

Related Question Answers

Nishant Nawarkhede

Professor

How do you install concrete expansion joints?

The easiest way to add expansion joints is to do it during the pouring of your cement slab. As you finish pouring each section of your driveway, slip an expansion joint into the form between the section you've just poured and the section you are about to pour.

James Lin

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Do concrete expansion joints need to be sealed?

Expansion joints must be sealed with a flexible sealant, like QUIKRETE® Self-Leveling Polyurethane Sealant or QUIKRETE® Non-Sag Polyurethane Sealant…or an expansion joint strip, to prevent water from penetrating the joint and deteriorating the sub-base.

Nicolas Raoul

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Do concrete slabs need expansion joints?

Expansion joints are virtually never needed with interior slabs, because the concrete doesn't expand that much—it never gets that hot. Expansion joints in concrete pavement are also seldom needed, since the contraction joints open enough (from drying shrinkage) to account for temperature expansion.

squiguy

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Do I need control joints in concrete slab?

Joints should be sawed as soon as the concrete will withstand the energy of sawing without raveling or dislodging aggregate particles. ... Contraction/control joints must be established to a depth of ¼ the slab thickness (Figure 2). Proper joint spacing and depth are essential to effective control of random cracking.

Veedrac

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How can I make my old concrete driveway look better?

6 Ways to Make Your Driveway Look Amazing#1: Etching. Nothing sets your driveway apart from the rest like etching. ... #2: Staining. Tired of plain old gray? ... #3: Stamping. Similar to staining or etching, concrete stamping can also spruce up your driveway with color and a pattern. ... #4: Weeding. ... #5: Pavers. ... #6: Resin Bound.

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How thick is the concrete on a tennis court?

100mmConcrete tennis courts technology has changed dramatically whereby the numerous expansion joints are not necessary. Depending on site conditions the normal slab is 100mm thick reinforced with F72 mesh. The strength of the concrete is 25mpa.

Anders

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How far apart should concrete anchors be?

Bolts shall be spaced not more than 6 feet (1829 mm) on center and there shall be not less than two bolts or anchor straps per piece with one bolt or anchor strap located not more than 12 inches (305 mm) or less than 4 inches (102 mm) from each end of each piece.

David Cournapeau

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How far apart are studs in old plaster walls?

24 inchesThey're always spaced either 16 or 24 inches on-center (measured from center to center) along the wall and run between the floor and ceiling. Drywall or lath (for plaster walls) attaches to the edge of the studs.

Tarik Huber

User

What causes concrete to crumble?

Concrete seems like a stable and permanent material, but it remains porous and will absorb water. When this water trapped inside the concrete freezes, it pushes the cement binder apart. This expansion, and the resulting contraction when the water melts again, causes crumbling.

DebanjanB

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What is the best concrete joint filler?

Akonaflex™ Expansion Joint Filler is a superior-grade, one-component, urethane sealant and filler to be used in concrete joints as well as a wide variety of substrates.

Andrew Whitaker

User

What to fill concrete joints with?

Foam backer rods act to fill in space between concrete joints so you don't need to use a ton of self-leveling sealant. Here's a BIG TIP: the diameter of the backer rod should be 1/8 inch larger than the width of your concrete expansion joint. This will ensure a water-tight seal.

Amir Popovich

User

What do you use to fill concrete expansion joints?

Foam backer rods act to fill in space between concrete joints so you don't need to use a ton of self-leveling sealant. Here's a BIG TIP: the diameter of the backer rod should be 1/8 inch larger than the width of your concrete expansion joint.

Drew Noakes

User

How do you attach concrete sleepers?

Install the sleepers 5.3 - Screw each sleeper at least 2" into the concrete slab. Space screws 24" apart. Screw heads should lie flush with or just below the surface of the sleepers. 5.4 - Lay 2" x 3"s in parallel rows 12" apart on-center, perpendicular to the direction of your finished flooring.

Craig Walker

Guest

How much insulation do I need under a concrete floor?

A 50mm thick layer of proprietary floor slab insulation is usually enough to reach and maintain the target U value but this should be checked with an architect first. Insulation sheets should be laid tightly together with the joints staggered to avoid movement.

quoci

Guest

Should I seal concrete joints?

Stopping water from flowing under your concrete is probably the most important thing you can do to keep your driveway from sinking and becoming out of level. Caulking the joints and cracks is the best way to stop this from happening. Even expansion joints in your concrete driveway should be caulked.

Eugene Astafiev

Guest

Should you fill concrete expansion joints?

Just remember that expansion joints should always be sealed and filled with a flexible joint sealer and never be epoxied or coated over. Contraction joints can be filled in the same manner after a coating or sealer is applied.

Harshal Lonare

Guest

How far apart should expansion joints be in concrete sidewalk?

Joints are commonly spaced at distances equal to 24 to 30 times the slab thickness. Joint spacing that is greater than 15 feet require the use of load transfer devices (dowels or diamond plates). Contraction joints may be tooled into the concrete surface at the time of placement.

SCdF

Guest

Why is my concrete cracking?

When concrete expands, it pushes against anything in its way (a brick wall or adjacent slab for example). When neither has the ability to flex, the expanding force can be enough to cause concrete to crack. Expansion joints are used as a point of separation (or isolation), between other static surfaces.

Hans Olsson

Guest

How do you cut concrete expansion joints?

The thumb rule used to determine the depth of the control joint is to cut the joints one-quarter to one-third the slab thickness. If the concrete slab laid is 150mm thick, the depth of the joint must be 40mm to 50mm. If the joint is too deep, aggregate interlocking will not be sufficient to transfer loads.

Kirk Strauser

Guest

How thick should a concrete drive be?

For a standard driveway your sub-base should be at least 100mm deep (the same depth as the concrete), rising to 150mm if you plan to park larger vehicles on it. The hardcore sub-base needs to be in place and compacted before any ready-mix concrete arrives.

Marcello de Sales

Guest

What is the best base for concrete driveway?

gravel baseThe gravel base for a driveway should be a minimum of 4 inches deep. If heavier vehicles, such as large trucks, will use the driveway regularly, the gravel should be even deeper, up to 12 inches. Poor soil or a sloped driveway may also require deeper gravel.

c00000fd

Guest

Should I caulk my concrete expansion joints?

Caulking Concrete Cracks and Expansion Joints Caulking the joints and cracks is the best way to stop this from happening. Even expansion joints in your concrete driveway should be caulked. They can be the biggest culprit of water under your slabs.

Ciro Santilli 新疆再教育营六四事件法轮功郝海东

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Can I paint my concrete driveway?

Driveway paint is very thick and the first coat should be thin enough to fill the rough concrete surface. Begin by painting the edges ('cutting in') and details of the driveway using a paint brush. Use a roller to apply paint evenly over the rest of the driveway. Leave the paint to cure for at least 16 hours.

Sean Vieira

Guest

Can a concrete structure be completely free of expansion joints & contraction joints?

Consider that the concrete structure is not subject to the problem of differential settlement. For contraction joints, it may be possible to design a concrete structure without any contraction joints. ... Therefore, the structure has to be designed to take up these thermal stresses if expansion joints are not provided.

yazz.com

Guest

Can you fill concrete expansion joints with sand?

Can I fill concrete expansion joints with sand? Yes, you may use sand as a filling material before finishing it off with epoxy coating. The best type of sand to use is silica sand. Silica sand is an excellent extender for epoxy-based compounds and sealants.

estani

Guest

Can you guarantee concrete from cracking?

Expansion joints are used as a point of separation (or isolation), between other static surfaces. Typically made of a compressible material like asphalt, rubber, or lumber, expansion joints must act as shock absorbers to relieve the stress that expansion puts on concrete and prevent cracking.

imperium2335

Guest

Should you caulk concrete saw cuts?

Control joints or saw cuts should be addressed the same as above. The control joint can be filled with backer rod or even sand. Filling the saw cut is mandatory as control joints are 1/4 the thickness of the concrete. On a 4″ slab, that is a 1″ deep saw cut and nobody want to use that much caulking.

Gary Archer

Guest

Can you pour concrete over plumbing?

As long as the concrete pours correctly and the line supports minimal weight, it should be fine. The pipe should also be sealed appropriately at any joints to ensure that water from the wet concrete does not seep into any joints damaging the seal of the line.

HeberLZ

Guest

Do I need expansion joints in a concrete slab?

All concrete will shrink slightly as it dries and, when it's set, will expand or contract depending on the ambient temperature. To prevent cracks from forming, concrete expansion joints should be incorporated to allow for movement, particularly in slabs with a surface area exceeding 6m2.

Tom Christie

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Do I need to fill concrete expansion joints?

The key is to use the proper sealer or filler depending on the intended purpose and what type of joint it is. Just remember that expansion joints should always be sealed and filled with a flexible joint sealer and never be epoxied or coated over.

Paul Ogilvie

Guest

Do you need expansion joints in concrete driveway?

Every concrete slab, inside (basements, garages, etc.) or outside (driveways, patios, entries, etc.) are required to have joints every eight feet horizontally and vertically. Expansion Joints provide space between concrete slabs as a buffer for expansion on hot days and contraction when it is cold.

tscizzle

Guest

How thick should a reinforced concrete driveway be?

4 inchesFor a concrete driveway to last the life of your home, it must be well constructed. Concrete driveway slabs typically are 4 inches thick but can be up to 6 inches thick to provide additional support for large trucks and other heavy vehicle traffic. Ideally, the slab has some kind of reinforcement inside.

Cássio Lacerda

Guest

What PSI should my concrete driveway be?

3000 psi to 4000 psiThe typical concrete strength used for a driveway is in the 3000 psi to 4000 psi range, although temperate areas of the country may use lower strengths. Contractors, when ordering ready mixed concrete, should advise the producer of the intended use for the concrete.

vaultah

Guest

How can Cracks in concrete be avoided?

4 WAYS TO PREVENT CRACKED CONCRETEStart with a sound subgrade. Make sure the subgrade is compacted. ... Modify the concrete mix. Use a low water-to-cement ratio. ... Install joints. Be active in deciding where control joints will be placed. ... Properly cure the concrete. Properly curing concrete slabs: Why and how to cure.

Cody Gray

Guest

What to use to fill concrete joints?

Foam backer rods act to fill in space between concrete joints so you don't need to use a ton of self-leveling sealant.

Here's a BIG TIP: the diameter of the backer rod should be 1/8 inch larger than the width of your concrete expansion joint..

Ann Zen

Guest

How do you reseal concrete expansion joints?

After removing all the old sealant use a vacuum or wet/dry vac to suck up any debris from your concrete joints. Then use a closed cell foam backer rod in between the joints. Foam backer rods act to fill in space between concrete joints so you don't need to use a ton of self-leveling sealant.

Manohar Reddy Poreddy

Guest

Should I put sealer on my concrete driveway?

And concrete driveways should be sealed every four or five years to protect them from water penetration and to prolong their life. Many people believe that concrete driveways don't need maintenance, so they may never apply a sealer. ... The first step in driveway maintenance is the repair of cracks and holes.

narwanimonish

Guest

Should I seal concrete expansion joints?

Expansion joints must be sealed with a flexible sealant, like QUIKRETE® Self-Leveling Polyurethane Sealant or QUIKRETE® Non-Sag Polyurethane Sealant…or an expansion joint strip, to prevent water from penetrating the joint and deteriorating the sub-base.

nwinkler

Guest

Should I seal my concrete driveway every year?

Sealing the driveway yearly can lead to unsightly hairline cracks and peeling. And concrete driveways should be sealed every four or five years to protect them from water penetration and to prolong their life. ... This is a good time of year for driveway work.

Francesca

Guest

Should you caulk concrete expansion joints?

Even expansion joints in your concrete driveway should be caulked. They can be the biggest culprit of water under your slabs. Notice how the caulking is slightly lower than the concrete slab around it. This protects the caulk from wear and tear of people walking and driving over it.

dev.meghraj

Guest

Should you seal concrete after power washing?

Yes, the driveway definately will need to be sealed. I found out the hard way after pressure washing my drive and not sealing it. The sealer closes up holes in the driveway and prevents water from freezing and cracking in the driveway. Highly recommended.

Platinum Azure

Guest

What is the best concrete expansion joint material?

SikaflexSikaflex can be used to seal horizontal expansion joints. It's a great product because it remains permanently flexible, dries quickly, sticks to anything, is self-leveling, and highly resistant to weather conditions. You should apply Sikaflex when the temperature is between 40F-100F.

BadZen

Guest

What is the importance of these expansion joints in concrete or steel roads?

An expansion joint is designed to absorb safely the expansion and contraction of several construction materials, absorb vibrations, and permit soil movements due to earthquakes or ground settlement. The expansion joints are normally located between sections of bridges, paving slabs, railway tracks, and piping systems.

Rick James

Guest

What can I use for concrete expansion joints?

A pliable material is used (asphalt coated, cork, plastic) to construct these types of joints. The material should extend the depth of the slab and extend the full width of the slab. Ideally, for expansion joints on the exterior of a structure, sealing these joint is preferable.

doberkofler

Guest

How do you fill a large gap in a concrete driveway?

The best way to repair your expansion gap is to use purpose-designed foam backer rods and self-leveling caulk. Both materials are available in most home improvement stores. Cut your foam backer rods to the proper length for your expansion gap and press them into the gap.

Zach Smith

Guest

How far apart should concrete piers be for a shed?

3-5 feetCement blocks are built in piers (think mini-towers–but they don't lean) 3-5 feet apart. If the sheds are built like they should be, the structure of the shed easily spans the piers–unless you're parking the car in it, in which case you'll want to consider a gravel pad.