CONTACT US

Our Address

Science Avenue, High-tech Zone, Zhengzhou City, Henan Province, China

  • Gravel under garage floor? - GreenBuildingAdvisor

    I like to install a garage slab on a layer of 3/4-inch crushed stone at least 4 inches thick, but local practices vary. Sand could work. ... compacted densely (90% or to refusal), of 3/4-minus crushed rock (gravel) would be typical. If the excavation had to go deeper and the soil below the gravel layer is disturbed, the deeper portion might be ...

  • How to Pack Down Rock Before Pouring Concrete Home ...

    Dec 09, 2018  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 ...

  • 2020 Gravel Prices Crushed Stone Cost (Per Ton, Yard Load)

    Gravel Prices. Gravel prices average $60 to $75 per yard or $1 to $3 per square foot for the gravel, delivery, and spreading. A 4×20 gravel walkway costs $250 installed, a 10×20 gravel patio or landscaping costs $450, and a gravel driveway costs $600 to $1,800 to install.

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

    2-part question: 1) I'm building a 2-car 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.

  • Crushed Stone vs. Pea Gravel: What’s the Difference ...

    Jan 06, 2016  Like crushed stone, pea gravel can also be used for underground projects, such as drainage and pipe bedding. It’s also a good choice when looking for fence post installation aggregate. When considering pea gravel, it’s important to understand how its size can impact a project. Because it’s small, pea gravel will move easily if not edged ...

  • Pea gravel for interior floor slab support - Geotechnical ...

    Jun 06, 2006  Six inches of pea gravel, I assume that the max particle size is 0.5" 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

  • Then how would one "compact" pea gravel?In the mid west (USA) where I practice crushed limestone is normally used beneath floor slabs. I have however specified that pea gravel be used in...GeoPaveTraffic, one question for you - my fear in using pea gravel, or even some sands for that matter, is that with material like this that has un...a better material to use would be a well graded aggregate base course. it is readily available, compacts well and provides good drainage - and doe...JAE, your point about movement is very accurate. It is the single biggest problem we have seen constructing these foundations. The best solution...Just to add to what Geopave was saying, my company often allows CA-7 (Illinois DOT spec) under floor slabs. That is a 3/4 inch clean angular crush...INteresting.. I often spec pea gravel under tanks. In this circumstance it is nearly self-compacting. But as noted, foot traffic would cause som...Pea gravel is still commonly used under floor slabs and tight places. Floor contractors don't like working with it because it displaces so easily u...2Has anyone every seen an engineering definition of "pea gravel" which includes a gradation requirement?
  • What Type Of Gravel Under Concrete Slab - Walesfootprint ...

    Quality concrete slab design under slab vapor barrier americover under slab vapor barrier americover forms and pouring a concrete slab how to lay a gravel shed foundation high performance concrete slab. Slab Detail Northern Climates Recommend Gravel Clified FillHow To Build Patios WalkwaysWhat Is The Best Way To Fill A 3 Inch Gap Under My []

  • Pea gravel or crushed rock? - DoItYourself Community ...

    May 07, 2005  If the soil is disturbed and packed or unstable such as some clays, a base will provide a solid underpinning for the slab. If you use crushed rock and dust, it will need to be packed. It will pack substantially. Pea gravel, on the other hand won't pack. Place forms after the base is

  • Gravel Calculator How much gravel do you need? - Omni

    First, we can lay machine-crushed gravel of a larger size that will serve as a solid foundation for more aesthetic higher layers. We can add sand or dirt to this basal layer of gravel. At higher levels we would like to have gravel of a smaller size that will fit into the holes between the stones of the foundation layer.

  • How to Lay a Gravel Shed Foundation - An Everyday ...

    If you don't do this, the gravel will continue to settle after you put the shed on it. Use the right type of gravel, avoid pea gravel as this type of gravel cannot be properly compacted. If you plan to add a concrete pad over the gravel foundation, you must dig down at least 8 inches to allow for 4 inches of gravel and 4 inches of poured concrete.

  • Should I Build A Retaining Wall Or Go Free form?The next major decision is do you build retaining walls to hold the gravel in place or do you go crazy and make your foundation free form?As we go...What Kind of Gravel Should You use?Let's face it, to most of us, gravel is nothing more than a bunch of crushed up rocks. And while to a certain extent this might be true, there is m...The Best Types of Gravel to Use For Your FoundationImage courtesy Hacker Services LLC (ping pong ball used to show relative size)There is little difference between these two types of gravel are mino...The Wrong Types of Gravel For Your Shed FoundationImage courtesy Hacker Services LLC Although these grades of gravel can be similar in size to 21A and 21B, they do not contain any fine materials to...Let's Build A Gravel Shed FoundationNow that I have gone over the basics regarding the materials you are likely to need, the next step is to go over building your gravel shed foundati...Building A Free Form Gravel Shed FoundationThe only time you should consider building a free-form foundation for your shed is if the ground you plan to put it on is perfectly flat. If you tr...
  • 2020 Gravel Prices Crushed Stone Cost (Per Ton, Yard Load)

    Gravel Prices. Gravel prices average $60 to $75 per yard or $1 to $3 per square foot for the gravel, delivery, and spreading. A 4×20 gravel walkway costs $250 installed, a 10×20 gravel patio or landscaping costs $450, and a gravel driveway costs $600 to $1,800 to install.

  • Pea gravel for interior floor slab support - Geotechnical ...

    Jun 06, 2006  Six inches of pea gravel, I assume that the max particle size is 0.5" 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

  • Crushed Rock, Stone Gravel for Utah Landscaping

    South Town Crushed Rock — A more compact alternative to South Town cobblestones, our crushed rocks are useful as a concrete base or as a material for gravel road construction. They come in four sizes: ¼” ⅜”, ¾” and 1½”. Talons Cove Crushed — Our Talons Cove crushed rocks are predominantly gray, with red highlights and white ...

  • gravel or crushed stone under concrete Mobile Crushers ...

    Jan 27, 2015  By adding crushed stone under concrete, ... - 1/4″ Washed Clean Stone - 3/8” Pea Gravel - 3/8″ Washed Clean Stone - 3/8″ White Marble Chips - 3/4” Crushed Stone ... Our crushed gravel size under slab have ... Why Put gravel under concrete? - HomeOwnersHub. I have poured many small sidewalks and shed floors and never put gravel ...

  • Compact Fill Under Slab - Ask the Builder

    Pea Gravel. I preferred to use washed pea gravel for filling trenches like this in garages. 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.

  • Gravel Calculator How much gravel do you need? - Omni

    First, we can lay machine-crushed gravel of a larger size that will serve as a solid foundation for more aesthetic higher layers. We can add sand or dirt to this basal layer of gravel. At higher levels we would like to have gravel of a smaller size that will fit into the holes between the stones of the foundation layer.

  • How much gravel under concrete?

    Nov 26, 2002  In any case you want to use something that will compact like crusher run and not just gravel. 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. ... When you are ready to pour your slab after a couple years check the grade and maybe ...

  • What kind of parking pad for your RV at home? - RV Travel

    I use concrete turf blocks. They about 6 inches thick and measure about 10 inches wide by 18 inches long. They have a honey comb design and have good drainage. I fill the honey comb holes with pea gravel. The turf block pad is laid out so the blocks are under the entire length of the trailer including the tongue. You can drive over them as well.

  • Proper Subgrade Prep Concrete Construction Magazine

    Sep 20, 2007  With slab-on-grade foundations, an alternative to native soil material may be used to restore grade. These imported fills may include granular materials such as sand, gravel, or crushed stone. These high-strength and permeable materials offer low compressibility, which is ideal for a slab

  • Ask the Builder Concrete slab needs quality self ...

    Feb 10, 2015  I’d put a great cross-laminated vapor barrier on top of the gravel before you pour the slab in the garage. This will keep water vapor from rusting tools and causing havoc in the garage in the ...

  • How to Build a Gravel Shed Foundation [Essential Guide]

    Gravel. The key material for building a gravel shed foundation is crushed stone. Determine the size of your shed and add 2 or 3 feet to the length and the width for the size of gravel pad. To calculate how much crushed stone, you need multiply the length by the width. This is

  • what size gravel under concrete slab

    Pea gravel for interior floor slab support - Geotechnical , Jun 06, 2006 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 , [24/7 ...

  • Pea Gravel Landscaping: Do's and Don'ts - Braen Stone

    Don’t Apply Pea Gravel Directly on Top of Soil. One of the biggest mistakes made while using pea gravel is applying a layer of pea gravel directly on top of soil. Whether you’re making use of the pea gravel as an alternative to mulch, or to construct a driveway, walkways, etc.

  • Are Gravel Beds Around My Foundation Safe? Hunker

    Soils with good drainage are the best kind to cover with decorative gravel around building foundations. The soil, however, always must slope away from the foundation to ensure proper drainage; a minimum of 6 inches of drop for the 10 feet adjacent to the building is necessary.

  • Pea Gravel Landscaping: Do's and Don'ts - Braen Stone

    Don’t Apply Pea Gravel Directly on Top of Soil. One of the biggest mistakes made while using pea gravel is applying a layer of pea gravel directly on top of soil. Whether you’re making use of the pea gravel as an alternative to mulch, or to construct a driveway, walkways, etc.

  • what size gravel under concrete slab

    Pea gravel for interior floor slab support - Geotechnical , Jun 06, 2006 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 , [24/7 ...

  • How to Build a Gravel Shed Foundation [Essential Guide]

    Gravel. The key material for building a gravel shed foundation is crushed stone. Determine the size of your shed and add 2 or 3 feet to the length and the width for the size of gravel pad. To calculate how much crushed stone, you need multiply the length by the width. This is

  • Crushed Granite vs Pea Gravel: Pick the Right Material for ...

    Pea gravel is also very shock absorbent, soft and easy to walk upon and offers incredible drainage properties. Crushed Granite vs Pea Gravel: Key Differences. While both crushed granite and pea gravel are solid choices for landscaping work, you may find that one is

  • How much gravel under a slab?

    Sep 10, 2002  Gravel is usually sold by the cubic yard. If you want 4 inches of gravel after compaction you will need about 20% more volume than the 40x30x4inches. The 20% is how much the gravel will compact to its maximum density. You will need to add the right amount of moisture the gravel to get it to compact its fullest. Better a little dry than too wet.

  • Does anybody use sand as a base before they pour concrete ...

    Otherwise, what is under a slab depends on the ground you are pouring the slab on, some soils don't need anything, some need a lot of help. From American Concrete Institute ACI360R-10 Guide to Design of Slabs-on-Ground 4.5 Design of Slab-support system 4.5.1 General "After subgrade soils have been classified, the general range of K values can ...

  • what do you use under concrete?

    We are pouring our garage floor on a new build, what kind of material do we use under it? ... A. Pea stone will work as long as you compact it. You could also use 3/4 inch crushed gravel, this doesn't have any rocks larger than 3/4 of an inch and it rakes out pretty easy. Again also compact this.

  • Choosing Best Gravel For Concrete Pad - Concrete Paving ...

    Jan 06, 2008  I've used pebble gravel (the rounded off gravel) which I would think provides the best drainage but also used a 5/7 gravel. can 5/7 always be used or can crush and run be used in ... for concrete deck or slab - prolly should tamp it. Nobody ever does though. If you don't tamp it - at least wait a week or so before you pour. ... pea gravel (rock ...

  • Key to a sound concrete slab is compact fill underneath ...

    Aug 07, 2015  The slab then acts as a bridge between the pilasters and the compact dirt in the center of the garage. The easiest fix to the situation, in my opinion, is to just fill the trenches with self ...

  • Are Gravel Beds Around My Foundation Safe? Hunker

    Soils with good drainage are the best kind to cover with decorative gravel around building foundations. The soil, however, always must slope away from the foundation to ensure proper drainage; a minimum of 6 inches of drop for the 10 feet adjacent to the building is necessary.

  • Pros and Cons of backfilling foundation with gravel ...

    some pea-stone, then installed the french drain, then covered it again with pea stone. Then they poured the basement walls, and then they poured the floor and installed the sump pump. Then they backfilled with sand. around here, its typical to backfill the foundation with either gravel, pea-stone, or sand, sand being the most popular due to cost.

  • Gravel vs Concrete Shed Base Which Is a Better Choice?

    Gravel is generally better than concrete for a shed foundation. As mentioned above, gravel foundations win out for prefab sheds that come with wooden floors pre-built. If that’s the type of shed you’re planning to build/buy, the following reasons explain the benefits of a gravel shed foundation.

  • garage floor ideas? The H.A.M.B.

    Jun 03, 2006  Call around to some supply yards that sell gravel, rock, brick, dirt, etc. They should have crushed/recycled aggregate. I did 250 square feet for about 200 bucks, delivery and everything. Took about an hour to spread, level, and compact. I drove over it immediately. Way better than gravel. Way cheaper than concrete.

  • Sand under slab instead of gravel - GreenBuildingTalk ...

    Mar 04, 2013  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. If the area is on a generally sloped lot, a perforated pipe within the stone to drain the area to daylight downhill somewhere would be good.

  • what do you use under concrete?

    We are pouring our garage floor on a new build, what kind of material do we use under it? ... A. Pea stone will work as long as you compact it. You could also use 3/4 inch crushed gravel, this doesn't have any rocks larger than 3/4 of an inch and it rakes out pretty easy. Again also compact this.

  • Does anybody use sand as a base before they pour concrete ...

    Otherwise, what is under a slab depends on the ground you are pouring the slab on, some soils don't need anything, some need a lot of help. From American Concrete Institute ACI360R-10 Guide to Design of Slabs-on-Ground 4.5 Design of Slab-support system 4.5.1 General "After subgrade soils have been classified, the general range of K values can ...

  • How to Build a Pea Gravel Patio - The Spruce

    Pea gravel is one of the most economical and simple materials to use for a patio. This outdoor project is easy to complete, and long-term maintenance of the patio is a breeze. For very little money and a day or two of work for an average-sized area, you can have a graceful and gorgeous patio with a look that lends itself perfectly to many other cool, fun elements: string lights, do-it-yourself ...

  • Pea Gravel Mix Concrete Construction Magazine

    A.: Richard Meininger replied that there is no problem designing a concrete mixture with 3/8-inch maximum size coarse aggregate (pea gravel or crushed stone) using the ACI 211 proportioning procedures for a concrete slab placed by pumping. But the concrete will shrink more than a No. 57 mixture, so control joints must be at a closer spacing ...

  • When To Use Crushed Stone As Opposed To Gravel For A Project

    When it comes to building, hardscaping and landscaping materials, there are a lot of varieties from which to choose. Exploring the differences between similar materials such as crushed stone and gravel, rock vs stone will help you select the best materials for your project.. Crushed stone is made from rocks that have been broken down by machines called crushers, giving the stones more angular ...

  • How Much Gravel Do I Need for a Shed Foundation? - Site ...

    24×24 modular garage – this would be a large foundation for the placement of a two-car modular garage. 26x26x.05 = 338; 338/27 = 12.5 cubic yards or 17.5 tons of gravel As you can see there is a fairly wide range of possible sizes for a gravel shed foundation, each demanding a different amount of gravel.

  • How to Lay a Pea Gravel Epoxy Porch Floor Hunker

    Pea gravel mixed with epoxy creates a strong durable flooring material that you can spread over your front porch for an attractive change in the porch’s appearance. The gravel, which comes in a variety of colors, sits on the surface of the porch, held in a binder of epoxy that helps the gravel

  • Pros and Cons of backfilling foundation with gravel ...

    some pea-stone, then installed the french drain, then covered it again with pea stone. Then they poured the basement walls, and then they poured the floor and installed the sump pump. Then they backfilled with sand. around here, its typical to backfill the foundation with either gravel, pea-stone, or sand, sand being the most popular due to cost.

  • Choosing Best Gravel For Concrete Pad - Concrete Paving ...

    Jan 06, 2008  I've used pebble gravel (the rounded off gravel) which I would think provides the best drainage but also used a 5/7 gravel. can 5/7 always be used or can crush and run be used in ... for concrete deck or slab - prolly should tamp it. Nobody ever does though. If you don't tamp it - at least wait a week or so before you pour. ... pea gravel (rock ...

  • Sand under slab instead of gravel - GreenBuildingTalk ...

    Mar 04, 2013  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. If the area is on a generally sloped lot, a perforated pipe within the stone to drain the area to daylight downhill somewhere would be good.

  • Epoxy Garage Coatings - More Maintenance Warning ...

    Realize concrete overlays can range in thickness from 1/8-inch all the way to 1 or 2 inches. As the overlay gets thicker, you need to increase the size of the sand being used. Once the overlay approaches 3/4-inch inch in thickness, you can introduce tiny pieces of pea gravel about the size of a pencil eraser.

  • Self-Compacting 3/4" stone - JLC-Online Forums

    May 21, 2020  The crushed rock I was referring to, is, in my area, like a red quartzite, and it is still sorted and washed according to size and to remove fines. The larger the rock, the more reservoir capacity as far as drainage, because of more opens in the aggregate. 3/8 pea rock is the product of choice around here for AWWF footings, and 50% backfill.

  • What Size Crushed Stone Under Concrete Slab - FTMLIE Heavy ...

    Jan 27 2015 gravel or crushed stone under concrete Liming heavy industry is specialized in the design manufacture and supply of crushing equipment used in mining industry Our crushed gravel size under slab have Why Put gravel under concrete I have poured many small sidewalks and shed floors and never put gravel under the . Learn More

  • Pea Gravel Patio Help - Houzz

    Pea gravel does have its usage :-) I have a terraced area off the back of my deck that is made out of recycled concrete chunks and pea gravel is the filler in between the concrete. Because of the way the concrete was fitted together along the edges, the pea gravel does remain in