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HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

Jaw Crusher PE

Jaw Crusher PE

Jaw crusher is driven by a motor, and the moving jaw moves up and down via eccentric shaft. The angle between fixed jaw and moving jaw becomes smaller when the moving jaw runs down, then the materials are crushed into pieces. It will become bigger whe

HPT Hydraulic Cone Crusher

HPT Hydraulic Cone Crusher

Base on the latest technology and decades of years’ producing experience, Our Company designed the HPT series cone crusher. It has excellent crushing efficiency and good hydraulic control system. Now the HPC series cone crusher has wide application

HST Hydraulic Cone Crusher

HST Hydraulic Cone Crusher

HST Single Cylinder Hydraulic Cone Crusher is a new high-efficiency cone crusher independently researched, developed and designed by SBM through summarizing over twenty years of experience and widely absorbing advanced American and German technologies

CI5X Series Impact Crusher

CI5X Series Impact Crusher

CI5X Impact Crusher breaks materials with impact force. When materials enter the working area of hammer, they may be crushed under the high-speed shock and then thrown onto the impact device above the rotor for another crushing. Next, materials bounce

VSI6X Series Vertical Crusher

VSI6X Series Vertical Crusher

Due to the increasing market demand for the scale, intensification, energy conservation, environment protection and high-quality machine-made sand, SBM, a Chinese professional sand maker manufacturer, further optimizes the structure and function of tr

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

what size gravel for concrete slab

What size gravel to use under concrete pad DIY Home

May 09, 2011 Yes to your questions on rebar and placement of it. Since posting I've chatted with an engineer friend who said 4" concrete is plenty. He also suggested 1" sand, then 4" of 3/4" gravel (compacted) then the 4" concrete. Am going to try that!

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What Type Of Gravel Under Concrete Slab Walesfootprint

Mar 07, 2017 What Type Of Gravel Under Concrete Slab. Build a concrete slab extreme how to building a greenhouse foundation gravel vs concrete shed base which is subgrades subbases for concrete slabs subgrades subbases for concrete slabs subgrades subbases for concrete slabs.

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7 Different Crushed Stone Sizes and Their Applications

Jul 27, 2020 Most typically use it for concrete mix, landscaping, and drainage. #67 Crushed stone #67 includes stone that is 3/4 inch or smaller in size. #67 is a great

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Determining What Size Crushed Stone You Need For Your Project

5/8” This is also commonly used to mix with asphalt or concrete. It is also used for drainage or as driveway gravel. 3/4” There are two options at this size clean and DGA. 3/4” clean is used for drainage behind walls and is also used as fill and for drainage projects, such as French drains.

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

How Much Gravel Do You Put Under a Concrete Slab? You will need 3 inches of gravel under a concrete slab that is 4 inches thick. More gravel is better, but 3 inches is the minimum amount of gravel you should have with a 4” slab. Use ¾” washed and screened gravel, then compact it to level.

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Code Requirements for Concrete Slabs on Grade EVstudio

Mar 27, 2018 The fill that goes in must be compacted and no more than 24″ deep for sand or gravel or 8″ deep for earth. In addition, you need a base course of 4″ of clean, graded sand, gravel, crushed stone or slag under 2″ when the slab is below grade unless the existing soil is exempted by the soils report.

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gravel under concrete slab? is it absolutely required

Its about 3.75 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 3.5" of concrete over that or just full 5.5" 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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Different Types & Sizes of Aggregate for Concrete

Aug 11, 2018 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 concrete. The size range of various coarse aggregates given below: Fine gravel: 4mm 8mm. Medium gravel: 8mm 16mm. Coarse gravel

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Determining What Size Crushed Stone You Need For Your Project

5/8” This is also commonly used to mix with asphalt or concrete. It is also used for drainage or as driveway gravel. 3/4” There are two options at this size clean and DGA. 3/4” clean is used for drainage behind walls and is also used as fill and for

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The Recommended Gravel Base for a Concrete Driveway Home

The gravel should be clean, free of sand or clay and fairly uniform in size and shape without any large stones. It should also compact easily and be evenly compacted before the concrete is poured

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How to Build a Concrete Slab Lowe's

Nov 04, 2020 Typical concrete forms have a 4-inch layer of gravel underneath and about 4 inches of concrete on top. To build a landing for deck stairs, most building codes require the pad to extend beyond the steps about 36 inches, behind the steps about 12 inches and on the sides of the steps about 6 inches.

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What kind of stone under concrete slab? DIY Home

Apr 16, 2011 I asked him a specific question with him knowing the specific type and size of foundation, location and drainage attributes. He chose not to answer it. it's going to be a pier slab system, 6" thick slab poured together with 12" dia. footings about every 6 feet.

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Can I use pea gravel under concrete?

Question: What size aggregate should be used to make the concrete for a 4 inch slab? Top Answer (37% of 40 votes): 3/4 inch crushed stone. Explanation: #57 rock (3/4) is best for strength.

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Code Requirements for Concrete Slabs on Grade EVstudio

Mar 27, 2018 The fill that goes in must be compacted and no more than 24″ deep for sand or gravel or 8″ deep for earth. In addition, you need a base course of 4″ of clean, graded sand, gravel, crushed stone or slag under 2″ when the slab is below grade unless the existing soil is exempted by the soils report.

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Crush and Run Instead of Gravel Under Slab

Sep 17, 2020 Malcolm, I had assumed 4" was sufficient. If it needs 6", I will comply, but at $675 per 22ton load, it hurts. :) Also, when you say [top dress the 6" below the slab with a drainable fill] you are talking about the 3/4" gravel between the ground and the concrete, or in my case between the ground and Fomular 250 25 psi foam and then concrete.

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Subgrades & Subbases for Concrete Slabs The Concrete Network

Jul 31, 2018 Concrete strength also comes into play, but most slab concrete is around 3000 to 4000 psi, so it's not a major factor. The tensile strength of concrete is typically taken as 10 to 15% of the compressive strength, so only about 400 or 500 psi.

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Compact Fill Under Slab askthebuilder

DEAR TOM: Un-compacted fill under concrete slabs of any type is a recipe for disaster. The slab could be for an entire home, it might be an exterior patio slab, a front porch slab, a driveway, etc. Concrete is an amazing material, but it has an Achilles heel. CLICK HERE to get FREE & FAST BIDS from local concrete slab contractors. Concrete Weakness

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Gravel under garage floor? GreenBuildingAdvisor

Apr 19, 2016 The sub-grade preparation (gravel layer) is a structural element very important for the longevity of the concrete slab, entirely apparent from its role in water control. In my area, no one would use sand. 4 to 6 inches, compacted densely (90% or to refusal), of 3/4-minus crushed rock (gravel) would be typical.

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compacting gravel under a slab JLC-Online Forums

Dec 07, 2004 Re: compacting gravel under a slab Tucker: With 2 to 3 feet of rock, I fail to see why you need either poly or insulation under the slab, I think I would opt for the "oozing" and the thickening effect of the "waffle" bottom, I would think that structurally it turns a 3 1/2" slab into something more like a 6 or 8" slab from a structural standpoint.

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Concrete Without Gravel Best Types of Concrete Mix For

Regular concrete mix is made or Portland cement, sand, and gravel. It's commonly used for slabs, patios, floors, footings, steps, and sidewalks. Fast- setting concrete has the same sand & gravel but a special blend of fast setting cements added. It sets hard in 20 40 minutes.

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How to Pack Down Rock Before Pouring Concrete Home

Excavate the soil to a depth of 8 inches, allowing 4 inches for the gravel base and 4 inches for the concrete slab. The soil should be graded, or sloped, so the excavation site's center is

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What size gravel is best for concrete?

This primarily 1″ crushed, washed gravel with a top size of 1-1/2″ is often used for drainage around perforated pipe, under concrete slabs, and as a coarse driveway topping for soft, very muddy driveways.

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What size aggregate should be used to make the concrete

Question: What size aggregate should be used to make the concrete for a 4 inch slab? Top Answer (37% of 40 votes): 3/4 inch crushed stone. Answer: 3/8 inch crushed stone

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Code Requirements for Concrete Slabs on Grade EVstudio

Mar 27, 2018 The fill that goes in must be compacted and no more than 24″ deep for sand or gravel or 8″ deep for earth. In addition, you need a base course of 4″ of clean, graded sand, gravel, crushed stone or slag under 2″ when the slab is below grade unless the existing soil is exempted by the soils report.

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compacting gravel under a slab JLC-Online Forums

Dec 07, 2004 Re: compacting gravel under a slab Tucker: With 2 to 3 feet of rock, I fail to see why you need either poly or insulation under the slab, I think I would opt for the "oozing" and the thickening effect of the "waffle" bottom, I would think that structurally it turns a 3 1/2" slab into something more like a 6 or 8" slab from a structural standpoint.

More

How to Build a Concrete Slab Lowe's

Nov 04, 2020 Typical concrete forms have a 4-inch layer of gravel underneath and about 4 inches of concrete on top. To build a landing for deck stairs, most building codes require the pad to extend beyond the steps about 36 inches, behind the steps about 12 inches and on the sides of the steps about 6 inches.

More

Can I use pea gravel under concrete?

Question: What size aggregate should be used to make the concrete for a 4 inch slab? Top Answer (37% of 40 votes): 3/4 inch crushed stone. Explanation: #57 rock (3/4) is best for strength.

More

Compact Fill Under Slab askthebuilder

DEAR TOM: Un-compacted fill under concrete slabs of any type is a recipe for disaster. The slab could be for an entire home, it might be an exterior patio slab, a front porch slab, a driveway, etc. Concrete is an amazing material, but it has an Achilles heel. CLICK HERE to get FREE & FAST BIDS from local concrete slab contractors. Concrete Weakness

More

Requirements for Monolithic Slab Construction Hunker

Compacted gravel is spread to a depth of 3-1/2 to 4 or more inches beneath the slab and in the trenches. A typical choice is a well-draining gravel with aggregate ranging from 3/8 to

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How to Pour a Concrete Slab for a Shed [Complete Guide]

Multiply the thickness of the gravel by the dimensions of your concrete pad, and you get the cubic foot measurement off required gravel. For my example, I’d use 0.5’ (6” of gravel) x 12’ x 14’ = 84 cubic feet ÷ 27 (cubic feet in a cubic yard) = 3.11 cubic yards of gravel.

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Concrete Without Gravel Best Types of Concrete Mix For

Regular concrete mix is made or Portland cement, sand, and gravel. It's commonly used for slabs, patios, floors, footings, steps, and sidewalks. Fast- setting concrete has the same sand & gravel but a special blend of fast setting cements added. It sets hard in 20 40 minutes.

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HOW TO DECIDE MAXIMUM SIZE OF COARSE AGGREGATE TO

Mar 23, 2015 Plump (large undressed stone embedded with others in concrete on large work) above 160 mm and upto any reasonable size may be used in plain concrete work upto a maximum limit of 20 percent by volume of concrete. For heavily reinforced concrete members the nominal maximum size of the aggregate should be usually restricted to 6 mm less than the

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Concrete Slab How to install a slab from start to finish

THE TOOLS YOU NEED TO BUILD A CONCRETE SLAB. I've made a list of the 14 tools you will need to build a concrete slab. The list includes the tools you need to form the slab and the tools to pour the concrete also. CHECK IT OUT HERE. HOW TO FORM A CONCRETE SLAB. 1. Lay out all the boards around the perimeter as straight as possible. 2.

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Concrete Mixes 101: Which Mix Should You Use for Your

Project: Concrete Driveways, Slabs, Patios, Standard concrete mix is 3 Gravel, 2 Sand and 1 Portland cement in parts. Chris-Sakrete Technical Services 09.21.2020. Andy, Sand Mix can be used for other purposes other than an overlay. It may best to dig the area out a little more to allow for a gravel bed under the new material.

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Crushed Stone Grades: A Complete Guide

Crushed stone #67 Sizes from 3/4″ down to fine particles. For fill, road and slab base. Crushed stone #1 Sizes are from 2″ to 4″. The largest of the crushed stone grades. For larger jobs such a culvert ballast. Crushed stone #8 Sizes from 3/8″ to 1/2″. For concrete and asphalt mix. Crushed stone #3 -Sizes from 1/2″ to 2″.

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