what size is stone to use in concrete slab basement

    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 ,gravel under concrete slab? is it absolutely required ,, If steel is called for, it should be rebars (not wire mesh) and spacers used I live in a mild environment and we pour exterior unreinforced slabs about 15' x 15' before we start to using reinforcing If we use reinforcing, then it needs to placed in the middle of the slab and meet the Pe ratio of steel to concrete, or it will crack anywayVERY deep fill for garage slab, Aug 18, 2005· Use clean stone, and compact it in 6-8" lifts with a vibratory compactor We recently did a huge subterranean parking garage where some of the areas have 10' of stone under the slab, and the area between the exterior walls and the sheetpiling got backfilled with almost 40' of stone3 Reasons Why It's Important To Use Crushed Stone Under ,, Apr 28, 2014· 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:16 Different types of slabs in construction | Where to use?, May 21, 2017· Different Types of concrete slabs in construction:-There are 16 different types of Slabs in Construction Some of them are outdated and many of them are frequently used everywhere In this article, ill give a detailed explanation of each slab and where to use a particular slab Below are the types of concrete slabs.

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    Determining Rebar Size for a Concrete Slab | DoItYourself, The size of rebar you need for a concrete slab is determined by local and state building codRebar is the reinforced metal bar that is placed in a concrete slab for extra stability and strength Building Codes and Rebar Size Building codes will help you determine the length and size of rebar you need to use for the concrete slab you are pouringDifferent Types & Sizes of Aggregate for Concrete ,, Aug 11, 2018· A larger size, 40mm, is more common in mass concrete Larger aggregate diameters reduce the quantity of cement and water needed because of its lower Voids When the aggregate is sieved through 475mm sieve, the aggregate retained is called coarse aggregatecompact fill under slab, 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 heelAnyone Ever Break Up A Concrete Basement Floor?, Jan 23, 2014· I used an electric with a vacum attached and an electric breaker If there is reinforcement in the slab, the saw cut will cut that also Otherwise you will have pieces of concrete hanging onto the reinforcement and you will have to cut the metal out later anyway IMHO, unless you have personally done this before, do not use a gas saw in a basementWhat size aggregate should be used to make the concrete ,, Answer: Not sure Explanation: Many factors dictate aggregate size, including method of placement, regional availability of materials, admixtures etc 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 ,.

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    Pouring a concrete riser on a pre, Sep 07, 2010· If I was doing it (without knowing the size of your slab or the configuration of your basement) I would probably use a 4x4 as a form that you can pin to the existing slab with a ramset nailer You can rent these at Home Depot If your floor is uneven, you can staple some foam "sill sealer" to the bottom of the 4x4 before attaching it to the floorSlab on Grade or Foundation and Basement; Which is Best ,, Mar 25, 2012· The first factors to consider when designing the foundation system for a home are lot size and soil conditions When space is limited (with total footprint and height restrictions) a basement foundation may be the best option, but if space allows there is a strong case for avoiding basements altogether and choosing to build a slab-on-grade ,Proper Subgrade Prep| Concrete Construction Magazine, Sep 20, 2007· However in many areas, finding an onsite soil adequate for use as fill may be difficult Fill Alternativ 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 stoneHow to Reinforce a Stone Foundation Wall With a New ,, Many older homes have foundations made of field stone that may over time have sagged or bowed from the elements pushing on the ston Since no mortar as we know it today was used the stones can easily shift If there has been serious total collapse of the stone wall, total replacement is necessary If the problem is less severe, a new concrete reinforcing wall may be in order If you have an ,Concrete Mixes 101: Which Mix Should You Use for Your ,, To reduce the risk of shrinkage cracks, use Sakrete Crack Resistant Concrete Mix for projects with concrete thickness of 2 inches or greater It is a professional-strength blend of cementitious materials, sand, stone and fibers that helps eliminate the need for wire mesh in many non-critical applications.

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    Breaking up concrete in basement to expose waste line ,, A typical cancrete slab is 3"- 4" thick You can adjust the concrete cutter to the correct depth I had to do the same thing when I ran the electrical wires under my concrete patio to my garage The previous owners to my house had layed a cancrete slab on top of another concrete slab I had no idea until the saw was not going all the way throughQSRM Stone, Our smallest clean stone; used extensively in asphalt surfaces; drainage characteristics excellent for use under concrete slabs, driveways, patios, sidewalks, basement & garage floors #57 Clean and uniform in size; used as a coarse aggregate in concrete and asphalt mixes; used under concrete slabs, patios, sidewalks, basements, garage floors ,Types of Home Foundation, Stem Wall Slab: Stem wall slabs are another type of concrete slab foundation made up of multiple pieces of concrete, hemmed in by a series of concrete blocks that form the outline The use of the stems helps to transfer the weight of the structure throughout the ,What size gravel to use under concrete pad | DIY Home ,, May 09, 2011· What size gravel to use under concrete pad Jump to Latest Follow , 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 steel, you may be wasting 2" of concrete But, I'm not an engineer ,The Construction and Design of Concrete Slabs on Grade, Concrete slabs on grade are a very common type of concrete construction Floor slabs can range from a simple residential basement slab to a heavy-duty industrial floor However, no matter how basic or complex the floor is, the construction method is similar and includes; preparing the sub-grade and sub-base, placing the reinforcement and ,.

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    Elevated Concrete Slab, I'm designing a suspended concrete slab over a concrete basement walls for a house garage 24'X24' plan dimension Ideally I would like to avoid beams, but I know locally (Missouri) it has been done with one or two steel W shape beams to support the slabRecommended Concrete Mixes for Various Types of Construction, NOTES: When both fine and coarse aggregates are poorly graded, the following general rules regarding suitable proportioning of these will be found helpful: For maximum size of coarse aggregates as 40mm and over, sand should be half as much as coarse aggregat For maximum size of coarse aggregates as 20mm and over, sand should be two-thirds as much as coarse aggregatConcrete Vapor Barriers for Under Slabs, The last thing you want your customers to envision when thinking of a concrete floor is a damp, cold basement slab One of the reasons those old basement floors were like that was because they had no vapor barrier beneath them, leaving an easy path for water vapor from the soil to migrate into the slab, assuring that the cold clammy damp feeling never went awayWhat kind of stone under concrete slab? | DIY Home ,, Apr 16, 2011· 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 ,Pea gravel for interior floor slab support, 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 ,.

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    Stone Sizes | David H Martin Excavating, Inc, #67 stone is primarily a raw coarse aggregate used in the production of ready-mixed concrete and hot-mixed asphalt This material is a minus one inch product with no fin It is a clean material that can be used for several purposes including driveways and walkways, although it will not compact in placeDifferent Types & Sizes of Aggregate for Concrete ,, Aug 11, 2018· A larger size, 40mm, is more common in mass concrete Larger aggregate diameters reduce the quantity of cement and water needed because of its lower Voids When the aggregate is sieved through 475mm sieve, the aggregate ,Foundation Footings Used in the 1950s | eHow, Before the 1950s, foundations were constructed of a variety of stone or cinder block materials Concrete became widely used in the late 1940s, with poured concrete and concrete blocks becoming standard Footings that support foundation walls are constructed underground, often allowing the ,How to Cut Concrete (DIYer's Guide), Step 2 Prepare the workspace to keep concrete dust from entering your home If working in a basement or garage, tape drop cloths to any doors; if outside, ensure that all nearby windows are ,Concrete Floor Slabs| Concrete Construction Magazine, Jul 23, 2007· Quality floor construction includes good subgrade compaction, even thickness slabs, low-slump concrete, straight bulkhead lines, and control cuts spaced 24 to 30 times the slab thickness Common mistakes in concrete floor slab construction can be avoided with proper base preparation, mix design, placement, finishing, and curing.

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