what size gravel do you use for cement slabs



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How much gravel do you put under a concrete pad?

24-01-2020 0183 32 What do you put under a concrete slab? Just scrape off the sod and topsoil and add gravel fill if needed If you have clay or loam soil, you should remove enough to allow a 6- to 8-in layer of compacted gravel under the new concrete...

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How much gravel do I need for a concrete slab?

05-01-2020 0183 32 If you don t put rebars in a 4-inch 10 CM slab, then it won t be reinforced concrete - and won t perform As a general rule, any section of concrete must have at least 025 of its area in rebars to be considered reinforced concrete and do the intended job...

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How to Prepare the Ground Before Pouring Concrete Slab ,

Concrete is porous so you need to erect a concrete slab where drainage is not an issue Subsurface water can cause the ground the flex, creating stress cracks in the cement Properly preparing the subsurface helps to limit the potential for cracks in the finished concrete slab Preparation is the most important aspect of pouring a concrete slab...

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gravel under concrete slab? is it absolutely required ,

02-05-2017 0183 32 Its about 375 cu yards of crete, or like 400 It will cost 100 for gravel to fill in 2 , but my crete is still only a little cheaper, and it will be a thinner slab I could put gravel in, say 2 and 35 of concrete over that or just full 55 of crete or I could do lot of gravel and a 2 top coat over that with a bunch of steel and fibers,...

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What Type Of Gravel Under Concrete Slab

What Type Of Gravel Under Concrete Slab Difference between crushed stone and gravel gravel vs concrete shed base which is ultimate cheat sheet for concrete slabs concrete slab over the vault build a concrete slab extreme how to subgrades subbases for concrete slabs 3 reasons to use crushed stone under concrete slabs b r sand aggregates the ,...

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Importance of Gravel and Sand for Concrete Hunker

Concrete is made up of cement and water plus an aggregate composed of sand and gravel The sand and gravel do more than act as filler, though The size and amount of gravel added to a bag of concrete also determines the product s volume, strength, and durability...

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Types of Concrete Used in Residential Projects Port ,

Ready-mix is routinely used for poured concrete of this type For concrete driveways, slabs, and sidewalks, a pour of 4 inches in thickness is typical This thickness is in addition to a 2-3-inch base of gravel, sand, limestone, or another aggregate A strength of 4,000 psi pounds per square inch after a one month cure is the industry ,...

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Gravel base for concrete slabs DIYnot Forums

03-09-2019 0183 32 Gravel is fine as a sub-base providing its compacted well If you do use gravel it needs to be restrained on all sides to stop it spreading You would also need to lay the slabs on mortar as sand would simply drain away r896neo, 3 Mar 2012 2...

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Size of Concrete slab for hot tub

We do slabs for hot tubs all the time Here is what works for us Make the slab 6 larger, all the way around, than the hot tub The slab thickness should be 6 , use 4000 psi concrete, you do not need footers We tie a mat of rebar 12 inches on center for reinforcement, use 1/2 rebar, also called 4 , and tie together with wire ti...

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What size crushed stone for concrete slab?

22-06-2020 0183 32 What size crushed stone for concrete slab? The usual range employed is between 95mm and 375mm in diameter - Fine aggregates are usually sand or crushed stone that are less than 955mm in diameter Typically the most common size of aggregate used in construction is 20mm A larger size, 40mm, is more common in mass concrete...

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Gravel under Concrete Slab Pilots of America

28-06-2016 0183 32 For the Civil Engineers out there Does anyone know of any real reason to spend the money to put gravel under a concrete slab? I have always just graded the dirt under the slab so it drains off to the sides or bottom same as the concrete slab will drain, compacted it and called it good...

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What size gravel to use under concrete pad DIY Home ,

09-05-2011 0183 32 What size gravel to use under concrete pad Tags concrete concrete base gravel , Approx numbers 340 cubic feet 21,760 lbs 1813 pounds/sqr ft I think you d be safe w/ a steel reinforced 4 slab, and if you go to 6 with only one layer of ,...

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Different Types Sizes of Aggregate for Concrete ,

11-08-2018 0183 32 Gravel, cobble and boulders come under this category The maximum size aggregate used may be dependent upon some conditions In general, 40mm size aggregate used for normal strengths and 20mm size is used for high strength ,...

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Concrete Forms and Pouring a Concrete Slab DIY Family ,

If you have clay or loam soil, you should remove enough to allow a 6- to 8-in layer of compacted gravel under the new concrete If you have to remove more than a few inches of dirt, consider renting a skid loader or hiring an excavator An excavator can also help you get rid of excess soil Note Before you do any digging, call 811 or visit ,...

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7 Different Crushed Stone Sizes and Their Applications

27-07-2020 0183 32 4 Uses of Bank Run Gravel The Benefits of Using Recycled Aggregate , Most typically use it for concrete mix, landscaping, and , Crushed stone 67 includes stone that is 3/4 inch or smaller in size 67 is a great material for road and slab base as well as fill If you are interested in a specific type of crushed stone in ,...

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The 3 Types of Gravel That Are Best For Your Driveway,

Gravel is typically graded by size, and most driveways use 3 different types of gravel that are put down in layers to create a solid foundation and ensure proper drainage Gravel driveways are relatively inexpensive and easy to install as a DIY project...

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What size aggregate should be used to make the concrete ,

In order to minimize cracking, it is ideal to use a mix design containing aggregates ranging from natural sand, to 1-1/4 at an average of 18-22 of each size by weight Maven Group LLC Answer 3/4 inch crushed stone Explanation the standard mix for concrete foundations in 3500 - 3/4 aggregate This means that the concrete wiil yeild 3500 ,...

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How much load can a slab of concrete hold?

06-03-2020 0183 32 Click to see full answer Also question is, how much weight can a concrete floor hold? You have to know the weight of the load expressed in an area to determine the size foundation or stab that will support it A concentrated load of 90,000 lbs in one square inch, or even a square foot, is much different than a distributed 90,000 lb load over 1000 square feet...

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Subgrade and Subbase for Concrete Slabs

Subgrade and Subbase for Concrete Slabs 1 Subgrade for Concrete Slab The subgrade is considerably significant for concrete slab since concrete slab load and imposed loads are supported by subgrade When required, Concrete slab can be placed on the top of natural soil without the need for extra layers provided that it is clean and compactable...

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Laying Courses and Bedding Materials for Flags and Slabs ,

Definition Used to define stone flags that have been sawn or processed in such a way as to create a flag of regular, even thickness , and having chamfered or rounded arisses, can be laid on unbound bedding everything else is better laid on bound bedding Unbound Small pressed concrete flags 450x450mm or ,...

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What kind of stone under concrete slab? DIY Home ,

16-04-2011 0183 32 I am getting ready to have a foundation poured for a garage this summer, I am new to foundations so I asked my building inspector what kind of stone I needed under the slab and the only response he would give me was You figure it out It would have taken him less effort to list the stone, but thats for another day Anyways, help is appreciated, I have come across a dozen different ,...

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Do You Need Gravel Under Concrete Patio, Slab, Footings?

How much gravel is needed for a concrete slab?...

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How much gravel is needed for a concrete slab?

26-03-2020 0183 32 How much gravel is needed for a concrete slab? A minimum thickness is 4-6 inches of well compacted gravel should be your target Any more depth of gravel is ok with the proviso that it be well compacted Also know, do you need to put gravel under concrete? Whether you pour concrete for a walkway or patio, a strong gravel base is required to ,...

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Subgrade and subbase for concrete slab

17-10-2019 0183 32 Gravel These are coarse materials with particle size under 236 mm with little or no fines contributing to the cohesion of materials Moorum These are the products of decomposition and weathering of the pavement rock Visually these are similar ,...

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Pea gravel for interior floor slab support

06-06-2006 0183 32 Six inches of pea gravel, I assume that the max particle size is 05 or so, should be fine support for most floor slabs I have used it beneath a waffle type slab on very expansive weak shales and/or hard clays The ribs of the slab bear on the pea gravel with a ,...

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compact fill under slab

This gravel is the size of small green peas and it naturally compacts as it s put into a void space Visit a few local gravel pits in your area to see if they have this small rounded gravel You can also fill the trenches with a gravel product that s a mixture of washed sand and different sizes of rounded gravel...

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What are the Different Gravel Sizes? with pictures

Size 3, for instance, is usually 15 to 2 inches about 38 to 5 cm in diameter, and is often best for residential draining projects 8, which is usually 3/8 to 1/2 an inch 1 to 12 cm across, is frequently used in asphalt and concrete mixtur Gravel labeled 411 is usually a mixture of 57 and stone dust, and is particularly useful for ,...

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