why do i need crushed stone under concrete

Home > why do i need crushed stone under concrete

Should vapor barrier in slab be under 4 in. of gravel or

20191119&ensp·&ensp2part question: 1) I'm building a 2car garage with upstairs apartment in zone 4, 26' x 28'. getting different opinions on whether the vapor barrier 6ml plastic should be under the 4'' of gravel or on top of the gravel directly under slab? Some are saying it is not good to pour concrete right on plastic, although this seems to be the most common way to do it.

How much gravel under concrete? tractorbynet

20021126&ensp·&enspHow much gravel under concrete? How thick should I put a layer of gravel that I will (someday) pour concrete over? For something like garage 8" of compacted stone and 4" of reinforced concrete would be a minimum and 12" or stone and 6" of concrete would hold just about anything. then good compaction of the gravel itself. Better to do it

Choosing Best Gravel For Concrete Pad Concrete & Paving

200816&ensp·&enspWarning: The topics covered on this site include activities in which there exists the potential for serious injury or death.ContractorTalk DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Crushed stone Wikipedia

20191021&ensp·&enspCrushed stone is one of the most accessible natural resources, and is a major basic raw material used by construction, agriculture, and other industries. Despite the low value of its basic products, the crushed stone industry is a major contributor

Uses&ensp·&ensp

Sand under slab instead of gravel GreenBuildingTalk

201334&ensp·&enspI'd want to know why the sand is so wet in the first place. If it's just due to weather exposure and would drain/dry if under cover, that's one thing. If it's due to high water table, I might be inclined to build up the slab area with crushed stone (aka "gravel" in some places) before adding the foam and VB.

How Much Crushed Stone Do You Need? A SureFire Formula

How much crushed stone do you need to tackle that DIY project? Use this surefire formula to figure out the quantity needed, removing the guess work. Paving Bricks and Why We Use Them Calculating How Much Concrete You Need How to Build a Concrete Patio Guide to Estimating Mulch Needs How Much Stone Do You Need to Build a Wall? How to Lay a

Are Vapor Retarders Necessary for Basements and Garages?

20191116&ensp·&enspDoes a basement or garage need vapor retarders under the slab? Are they required by code? Learn more with this article from Stronghold Floors. Is a vapor retarder / barrier necessary for under the concrete slab of a garage or basement? The crushed stone or gravel base serves as a capillary break (a space between two surfaces which

How much gravel under concrete? tractorbynet

20021126&ensp·&enspHow much gravel under concrete? How thick should I put a layer of gravel that I will (someday) pour concrete over? For something like garage 8" of compacted stone and 4" of reinforced concrete would be a minimum and 12" or stone and 6" of concrete would hold just about anything. then good compaction of the gravel itself. Better to do it

Why do you need gravel beneath a shed?

Questions about why having a layer of gravel beneath a shed might be a good idea. Gravel beneath my shed. by Luis (OK, USA) Do I really need stones or gravel under my shed, if I do why is that? Also, how can I keep spiders and bugs from sticking under my shed? Having a layer of stone beneath the shed discourages rats as it makes it

3 Reasons Why It's Important To Use Crushed Stone Under

Concrete may seem strong, but after many years, elements, and pressure, it will eventually crack. So in order to make your concrete last as long as your money that went into it, adding a layer of crushed stone under a slab of concrete will increase the life of your investment. Here are 3 reasons why a layer of crushed stone is important to the life of your concrete:

Why Put gravel under concrete? (2019 UPDATE)

I want to pour a driveway section in front of the garage and was told by a guy at the concrete company (who came to measure the amount needed), that I need to put gravel under the concrete. WHY? I should mention that I always put lots of small to medium sized rocks under concrete to save on the amount of concrete needed.

Proper Subgrade Prep Concrete Construction Magazine

2007920&ensp·&enspAll too often, builders do not adequately prepare the subgrade for concrete foundations, sidewalks, driveways, or patios. The concrete contractor is responsible for ensuring that granular backfill receives proper compaction, density, and moisture levels prior to the placement of concrete.

why is it important to have gravel under a concrete slab

2010324&ensp·&enspIf it is up against the bottom of the concrete cracking will occur as ice is much stronger than concrete under the freezing conditions. Because you are only going to have cars on this slab, you only need Welded Wire Fabric as reinforcement.

Concrete Floor Problems Building Science Corporation

20191121&ensp·&enspSo why do I need a sand layer over the plastic for the slab on the ground but I don't need a sand layer for the elevated slab on the steel deck? very low watertocement ratios and the structural engineers are very concerned that the sand layer under the slab will desice the concrete mix and affect the cure. We can use crushed

gravel or crushed stone under concrete Mobile Crushers

gravel or crushed stone under concrete. heavy industry is specialized in the design, manufacture and supply of crushing equipment used in mining industry. Why Do I Need Crushed Stone Under Concrete? By adding crushed stone under concrete, 1/4″ Washed Clean Stone 3/8" Pea Gravel 3/8″ Washed Clean Stone 3/8″ White

Why do I need a Crushing and Screening Plant General

The Crushing and Screening Plant General Permit allows activity requiring crushed stone and/or the production of concrete under air quality rules. Concrete batch plants can also be operated under this permit to produce concrete. In PM10 (particulate matter 10 micrometers or less in diameter) attainment areas, this general permit allows for 6,500 tons per day for crushing and

Ask the Builder Concrete slab needs quality self

2015210&ensp·&enspWhat type of stone would be best for filling a cavity under a planned twocar garage addition? It is approximately 7 feet deep. The local concrete supplier sells recycled concrete for a really

What should the ratio of crushed rock and sand for a paver

2019924&ensp·&enspThe method is much different in the frozen north than the sunny south. I do not like crushed stone with a gravel overcoat. the sand will eventually settle into the stone and leave voids under the pavers.. I am a firm believer in stone dust. 3/8 stone dust, wetted and compacted is like a concrete base.

Crushed Stone Under a Spread Footing Geotechnical

20091217&ensp·&enspCrushed Stone Under a Spread Footing Crushed Stone Under a Spread Footing SoonerSoilGuy Can someone explain me as to why we do that when we run the settlement analysis with the original soil profile. I wouldn't consider either crushed stone or blinding concrete to improve the settlement situation. RE: Crushed Stone Under a Spread

pre:cone crusher chinese zenithnext:grinding steel reserved