How Much Weight Can A 6 Inch Concrete Slab Hold

Just like a 2×4, a four inch thick slab is only 3-1/2” thick. Composition of concrete used in slab: 1:2:3 ratio of opc-cement:sand:crushed-stone. It has a foot print of four tires about 10 inches by 10 inches time 4. Determine the amount of concrete needed. A typical concrete slab costs $4 to $8 per square foot with most homeowners spending between $5. Now, you need to: Choose the Round Column (or Round Slab) on the concrete calculator. A 1,000 pound lathe and mill is a nothing burger really. 40# per sq foot for a 3 inch thick reinforced concrete slab with corrugated steel underlayment on 24" spaced structural members seems way low. I need help figuring out about how much it weighs because I need to move it. • Use a 6 to 8 inch [150 to 200 mm] layer of coarse gravel or crushed stone as a capillary break in loca-tions with fine-grained soil subgrades. The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support, but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line. Need help? Call our Stone Specialists at 978-742-9800, text to 978-310-3008, or request a quote. The design load represents the total amount of weight the work platform (mezzanine) can handle. I was reading another forum were several guys were saying they never use rebar in a 4" slab. Shortly, what you have is 4’ x 10” tubes. If you poured a 6 inch thick concrete patio slab on a non-expansive soil, you might not have any problems in the future. 5 feet (for 6 inches). A very heavy chamber made with reinforced steel or lined with granite can usually hold less since it weighs so much empty. Distribute excavation material on site. For example, let's calculate how much concrete is needed for a 5-inch thick rectangular driveway, 60-feet long (length) and 18-feet wide (width). * Note that our Concrete Calculator uses the stats of premixed cement density, which is 2,130 kg/cubic meters, and 133 pounds/cubic feet in order to calculate the weight of concrete which is required. Weight of Concrete It is important to know the weight of any section of concrete that is being cut. If you have more debris than one dumpster can hold, you can schedule an empty-and-return or rent multiple containers at a time. The existing footing is 2 feet wide by 1 foot thick concrete reinforced with (3) #4 rebar continuously. A 4-millimeter sheet of plastic lies between the concrete and the gravel to keep moisture out. This trench would get filled with concrete and rewire or rerod. For example, a 50' x 50' mezzanine at 125 PSF design load can hold 312,500 lbs. Slabs Concrete calculator. I also added in a pinch of this fiber, and glue to help hold everything together. Then we are applying a 6 mil polyethylene vapor barrier over the entire area which will be covered by 3/4 inch plywood underlayment, a carpet pad and carpeting. Concrete is a rigid material that will support frequent channeled wheel traffic without deforming. A 4- or 6-inch layer of gravel lies beneath the slab. 375, the factor is 0. com Ezekiel Enterprises, LLC 301 Mission Dr. A 6-inch-thick slab weighs only about 75 psf, and live loads The requirement of steel in the floor slab is just to hold the slab in position and avoid cracks. The diamond-shaped pattern provides a safe non-slip surface for many years of service. Materials alone cost about $4 per cubic foot. the main concern in your case should be dealing with lateral and uplift loads. The distance between our posts would be 18’x14′. Increasing your driveway's thickness from 4 inches to 5 inches will add 20% to your concrete cost, but the additional inch of concrete will add almost 50% to the load -carrying capacity of your driveway. They are hollow when laid up; steel reinforcing bar is added and the hollows are often filled with concrete. Give it a broom finish and let it cure for about a week or two before driving on it. nz , Tel: Professionals helpline - 0800 80 80 85 - is available free to those who work. Automatic calculator for the specific unit weight of a volume of concrete in pcf, lb/ft^3, lb/yd^3, kg/m3, fresh wet concrete mix and dry cured hardened concrete. If the concrete is going to see light use and won't need to withstand heavy objects such as cars or machinery, a 3-inch slab might do the trick. This is expressed in how many bags of cement per yard, the more bags the higher the psi strength of the concrete. Moblo Enterprises 12 inch No Head Stake (40/80/120 Pack) Starting At $130. However, in the area of coach parking I thickened the slab especially in the area of the rear tires. As a general rule, design the paving slab to be as wide as the diameter of the tank, plus 4. A 1 to 4 concrete made from cement, 1; hydrate lime, 0. For large vehicles, you may choose to use 4000 psi concrete. Good base course (well compacted otherwise it will settle and break the slab), 3,500 psi min. It consists of 2 pressure treated 4x6 boards that the shed floor joists sit on. (LENGTH X WIDTH X DEPTH) DIVIDED BY 27 =# OF CUBIC YARDS. For example, a 10-foot X 10-foot X 6-inch patio needs 1. On the other hand, if you build on soft clay soil or if there's a soft zone under part of your foundation, there can be trouble. When using concrete for projects around the house, you are expecting the concrete to have a purpose. 00 per square foot. If you have concrete delivered it is sold by the yard (which is a cubic yard = 27 cubic feet). Discussion in ' General Gun Discussions ' started by leadcounsel, Feb 10, 2009. Since you can span 13" with a 2×8 SPF joist on 16 inch centers, but you ultimately decide to only span 8 feet with your joist on 12 inch centers, the weight bearing increases. Stake 4 inch (10. It will hold up even under the heaviest loads and frequent crossings. Since a concrete pad is relatively thin, if water moves beneath the pad, then the pad could shift as well. We realise this can be confusing, so to help you convert inches for depth into feet please see the information below. So how much does it cost to pour a concrete slab? In our area, hiring a concrete contractor to pour a 16 x 20-ft. I used this reinforcement fiber while casting a concrete bathtub in my home. Does this sound like a good strategy. 1000/32 = 31. That's closer to 1,600 psf, too low to support the weight of the building. Frankly, the strength of the 'concrete slab' depends more on the concrete contractor, whether they add calcium or too much water on site, and slab preparation (rebar/wire mesh, etc. Rebar with a diameter of 7/8 of an inch — #6 rebar — has a sheer load bearing of 30,148 pounds per square inch. The Homewyse concrete slab. Assuming it has the right ratio of sand to cement to water. Using both Bigfoot Systems Footing Forms and construction tubes combined - Model BF24 with a 10 inch tube 6 feet long: 6 ft. However, a tile surface is usually much more slick than concrete or asphalt. – Can stand up to far more as compared to cinder blocks and so in many places use of cinder block is mostly prohibited on purpose. each way set on dobies. That’s about $5,400, or between $3,600 and $7,200 for a typical 30- by 30-foot slab that’s 6 inches deep. Sponsored Links. Re: insulating foam board under concrete slab??? Dow makes a product called Highload if you are worried about compressive strenght, you can get it up to 100psi. How Much Does Concrete Weigh? The weight of concrete is calculated based on the length, width and thickness of the slab. Shear forces and Bending moments due to Dead loads Dead Load Super Imposed Dead Loads Beam Weight Slab Weight Barrier Wearing Surface Total Total Dead Load Shear Moment Shear MomentShear Moment Shear Moment Shear Moment Shear Moment Distance x ft. 8 to 10 inches for commercial. The tubing is assumed to be spaced 12 in. It can also be used for slab foundations and high traffic roads. Density is the measure of mass for a given volume and is defined by the. A 72-inch diameter, wall B, ASTM C76 reinforced concrete pipe is to be installed in a trench in a sandy coastal area with 8 feet of backfill over the top of the pipe. I'll finish by explaining that the tension force on the screw in the above illustration is the length A divided by length B, multiplied times the weight of the object. It is designed to carry more than the weight of two automobiles. The method that you chose really depends on cost and available headroom. about 30 kg per sq. oak flooring. 6-6 refers to a 6" by 6" grid and 10 refers to the gauge of wire. President S. So if you have a rectangular slab to remove you multiply the length times the width, both in feet, by the thickness in inches and then by 12. The design procedure includes determini ng slab thickness based. SUPRENANT Slump adjustment is a fact of life for concrete contractors, but they should follow these guidelines for its use Variations in slump between trucks can be the result of many factors. The strength of concrete is often measured in pounds per square inch. Brickfaced Slab. Choose thicker glass for longer shelves as it can support more weight. With this approach, at least I’ll know there’s a major problem when the concrete begins to crack instead of the existing posts failing abruptly. Slab size about 1500 x 1000. Basic considerations. ­A concrete roof is exactly what it sounds like: a solid slab of concrete capping the top of your house. The area of the driveway is 1,080 square feet (60-feet x 18-feet). oak flooring. 17 per square foot, or $113 to $126 per cubic yard for both materials and installation. Estimate the cost of materials if you know the price per yard. Hence the weight of your house put pressure ONLY on the little footings of the columns and you have to be pretty sure that your soil can hold that. A five inch by five inch thick concrete slab can hold ten thousand pounds if it is medium strength. Using 60-pound bags that yield 1-half cubic foot per would require 100 bags. It involves mixing water, aggregate, cement, and any desired additives. RE: Load capacity of "typical" Slab on grade msucog (Civil/Environmental) 15 Jun 08 08:03 if you're worried about it and want a little more safety factor, ask the engineer to thicken the slab where the posts will be located. Bags: Number of 40 lb. The weight that a 4×4 beam can support horizontally depends on the type and quality of the wood used. They are gray in color to blend with the concrete. It looks like a sheet of dimples or very large bubble wrap. DEAR TIM: My concrete sidewalks and driveway look horrible. FEMA NATIONAL US&R RESPONSE SYSTEM STRUCTURAL COLLAPSE TECHNICIAN 01-00 MODULE 2a SHORING BASICS SM 2A 1 The Objectives of this unit are as stated in the adjacent slides. Enter the Height of 4 feet (or 48 inches). A typical pad has a 4-inch layer of gravel underneath and about 4 inches of concrete on top. Sometimes you might hear concrete pad foundations referred to as floating slab foundations for this reason. Within the concrete foundation, wire mesh and steel reinforcing bars are embedded. Good base course (well compacted otherwise it will settle and break the slab), 3,500 psi min. 8 lb US ( 1. The cracked, thin concrete should be removed, the sub-base properly compacted (hopefully you have gravel under there) and a new 4" thick concrete floor poured. Sponsored Links. Square or Rectangle Concrete Slab: Notes: Pre-mix concrete comes in bags that are 60 lbs. That’s all there is to it! You can have a completely leveled slab that feels brand-new in under an hour of work. We bought 20 acres with absolutely nothing on them, not even a driveway, with the intention of farming. That much water weighs about 3,500 pounds (1 gallon weighs around 8. Check out the table above to see various formulas for calculating how much concrete your project requires based on the shape of the area you’ll be covering. Materials: a silicone ice cube tray, magnets, concrete mix, a bucket or container to mix the concrete in, a stick for stirring, and a cup to scoop the concrete with. Total Weight of Column = 333 + 22 = 355 kg/m = 3. The thickness of concrete is an important factor in load-bearing strength, but to conserve resources and avoid over-building, other factors are also taken into consideration. This will form the foundation for the brick wall which surrounds the base. Discussion in ' Trucks and Trailers ' started by kps2389, Jul 4, 2009. If the minimum yield strength is constant, that means the tensile strength of the concrete is determined by the amount of rebar in it per foot. 043 lb/ft ) Slab Volume 120 ft³ - Area 240 ft² #N#Concrete rebar calculator plan view diagram. How Much to Pour a Concrete Slab: Estimate a Concrete Order. How to Pour a Concrete Slab for a Mobile Home Jack S. Concrete can be ordered in ½ yard increments. Following a 6 month drying out period, new wood flooring was installed where carpet once existed. With a density under 2 lbs. How much weight can a 6" concrete slab hold? I live in a maisonette the slab is not ground level in measures 6 and a half inches at front how much weight will it hold? Answer Save. 45 cubic feet and 40-pound bags just 0. When you hear a concrete mix has a strength of 2000, 3000, 4000, or 5000+ PSI, it is referring to the pounds per square inch it would take to crush that concrete slab. At least one row of rebar around the perimeter for reinforcement, A double row is even better. Compressive strength of concrete for footings to floors should be 2500 -3000 psi or more at 30 days when poured & cured properly. SUPRENANT Slump adjustment is a fact of life for concrete contractors, but they should follow these guidelines for its use Variations in slump between trucks can be the result of many factors. Stake 4 inch (10. Concrete is ~150 lbs per cubic foot, so every 2' would weigh ~1800 lbs across the 25' span. Re: Load Limit For 3 Inch Concrete Floor 10/24/2013 7:42 AM To elaborate along the lines of Bricktop's reasoning, you should be able to go to the town/city hall and pull the submitted dwgs for the building permit and the load limits will be listed on the concrete structural dwg which should include the structural steel beams in the calculation. Tank size 1000L. 6 pft 3 versus 60 pft 3). It's the same like an Eskimo walking over snow without snowshoes; he will sink deep into the snow. The total concrete needed for the 3' by 3' porch will be. Steel ties are 100% recyclable and require up to 60% less ballast than concrete ties and up to 45% less than wood ties. I have been given a 225 gallon aquarium and I would like to set it up in my (rental) house. Structural concrete work is planned to bear loads, or hold weight, but transfer the weight to the soil base beneath the structure. It's designed to provide reinforcement that lets all the concrete act as "one" slab, but not to degrade the strength of it. I've hammer-drilled through concrete to sink anchors, but a 4 inch diameter hole is a little intimidating -- until you have the right tool. Approved test criteria and level. This totals. The slab is 4 inches but I really don’t feel these new posts will ever get considerable weight. 95 cm), 1/2 inch (1. They may be pre-stressed (in the factory), post-stressed (on site), or unstressed. How Much Weight Can Flat Commercial Roofs Handle? Preparing for Snow and Other Issues. SUPRENANT Slump adjustment is a fact of life for concrete contractors, but they should follow these guidelines for its use Variations in slump between trucks can be the result of many factors. See professionally prepared estimates for concrete slab removal work. Flatten the concrete using a straight 2×4 that's about 1 ft. When you hear a concrete mix has a strength of 2000, 3000, 4000, or 5000+ PSI, it is referring to the pounds per square inch it would take to crush that concrete slab. Concrete can normally be poured through the large door opening. From Experience most slabs are going to end up with a load capability of around 500kgs per square meter your spa is just over this. Load capacities of simply supported concrete slabs: Imposed loads varies from approximately 1. Its welded at all connection points. 28 cubic yards) Repeat this for added layers of steps. Get fair costs for your SPECIFIC project requirements. For example, when using feet to enter dimensions you must enter 10 feet x 6 feet x 0. Mineral wool, on the other hand, has a compressive strength in the range of 11 to 15 psi. For example, if you wanted to raise the finished floor surface by 12-inches, then you could pour a 4-inch concrete slab on top of 6-inches of compacted fill material and 2-inches of rigid insulation board. In addition to internal and external water sources, other environmental conditions, such as ambient temperature and air circulation, impact drying time. You might want to dig a perimeter to 9" deep by 12" wide around the 14' square and pour the slab on grade (not dig the slab down) to provide some height offset from the grade level to keep any minor flooding out. Rebar, Wire Mesh or Fibers in A Concrete Slab? The great debate on whether to use rebar or number 10, 6 x 6 wire mesh in a concrete slab may go on forever. Discussion in ' General Gun Discussions ' started by leadcounsel, Feb 10, 2009. It arrives with a WeatherTec procedure that genuinely can help hold the tent, and its contents, dry. Although 2 x 4 walls are most common, 2 x 6 walls are sometimes used (for the insulation reason mentioned) and they would be better able to support a future second floor. 5″ to 6″ inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. See typical tasks and time to remove a concrete slab, along with per unit costs and material requirements. Call a concrete company, tell them the pounds. We used 18,000-pound screw jacks, 4×4 lumber, a circular saw, power drill/driver, and cement blocks. Your concrete slab should be at least 4 inches deep (100mm). Thus, environmentally the dirt is washed away and leaves a "void" which causes the slab to sink. A workforce of skilled concrete laborers to pour and finish it. A concrete sealer is a material which is applied to the surface of the concrete about 6 to 10 hours after pouring (and sometimes much later). • Resist the impulse to loosen the mix with a lot of water when it arrives. Don’t add any weight or walk anywhere on the entire slab. All 3/4 inch diameter anchors must be a minimum of 6 inches away from any expansion seams, control joints or other inconsistencies in the concrete. You have 50 round concrete form tubes, cement tubes or any other tubes you need to fill. For example, a 10-foot X 10-foot X 6-inch patio needs 1. In addition to the analytical approaches noted by others, you should consider an elastic layer analysis of the slab, checking the lateral tension at the bottom of the slab (you can do similar with a von Mises FEA stress analysis of a plate section, using concrete properties for the plate. If a 6-cubic-foot machine holds a maximum of 420 pounds, for example, that includes the weight of water added to the dry mix. Submerge the vibrator head fully into the concrete, and hold it there for at least 10 seconds. 265 Foster Street. So depending on what the slab needs to support will determine the thickness and configuration of the concrete. Re: Load Limit For 3 Inch Concrete Floor 10/24/2013 7:42 AM To elaborate along the lines of Bricktop's reasoning, you should be able to go to the town/city hall and pull the submitted dwgs for the building permit and the load limits will be listed on the concrete structural dwg which should include the structural steel beams in the calculation. Density is the measure of mass for a given volume and is defined by the. Re: Can my 2X12 floor joists hold a 2000lb bandsaw? « Reply #21 on: March 15, 2013, 12:09:55 pm » So, steel beams with proper footers/pilings and then a poured concrete floor how thick?. A concrete slab is the most durable, stable and most recommended foundation for a spa. 163 cubic meters) of concrete. • Use a 6 to 8 inch [150 to 200 mm] layer of coarse gravel or crushed stone as a capillary break in loca-tions with fine-grained soil subgrades. The slab must have deep footings under all the perimeter and bearing walls, and should always be at least 8 inches above grade. If you are building a concrete driveway, then the driveway needs to be able to house your vehicles and hold the weight as necessary. We deliver and set the cattleguard in place for you. 4" is plenty, be sure the base is good - compacted, free draining, etc use a relatively tight mix, ie low water to cement ration, slump in the 3 to 3. The calculator will indicate the number of 60 or 80 pound bags of QUIKRETE® Concrete Mix you need to build a 4″ or a 6″ slab. For example, a 50' x 50' mezzanine at 125 PSF design load can hold 312,500 lbs. – Much efficient as compared with the former as it can withstand much pressure. Concrete has moisture in it and your wood will mold and rot over time. Changes in temperature and ground movement allow shifting of the foundation with no impact on the poles that support the. Its welded at all connection points. The weight that a 4×4 beam can support horizontally depends on the type and quality of the wood used. Specifically, there are several corners which have short runs because of windows near them. contact with the concrete surface. Common slab thicknesses include: 4 inches for sidewalks. Weight of the concrete per volume of concrete. At least one row of rebar around the perimeter for reinforcement, A double row is even better. Moblo Enterprises 12 inch No Head Stake (40/80/120 Pack) Starting At $130. Published on Jul 28, 2016. 5m in length and 6. you could drop an extra thousand bucks on concrete and significantly thicken the post areas. This total, 410,000 pounds, is more than 200 tons for our. You might want to dig a perimeter to 9" deep by 12" wide around the 14' square and pour the slab on grade (not dig the slab down) to provide some height offset from the grade level to keep any minor flooding out. They've worked out well but getting them home and carrying them to my work site was difficult as they weight 80 pounds apiece. Discussion in ' General Gun Discussions ' started by leadcounsel, Feb 10, 2009. Here's a brief rundown of what you need to know about concrete and concrete prices. weigh as much as 5,600 pounds. Structural precast can range from $43 per linear foot for a 15-foot span to as much as $95 per linear foot for a 30-foot span. The inspectors here like to use wire mesh and fiber. How much does a 'standard' 600mm x 900mm paving slab weigh (approximately)? I want to know so I can guesstimate how many I can put in the back of my car. Even 2 inches of water will absorb a lot of heat, and evaporate off. Wall forms must be strong enough to withstand the great pressure exerted by the wet concrete; any failure in the forms will be disastrous. A slab foundation can be a cheaper way to build because a slab requires less work in excavation (you may only need to strip the top 6 inches of organic matter), and less aggregate. Weight of the concrete per volume of concrete. If it is high strength, it can hold about one hundred and fifty thousand pounds. Tendons today are seven high-strength steel wires wound together and placed inside a plastic duct. These are the costs for the material only and won’t include the. The legs can actually hold quite a lot more than this but we suggest staying below these limits in order to ensure your table remains sturdy with no wobble. How much does a concrete slab really cost?* On average, concrete slabs can cost anywhere from $75 to $110 per square metre. Stake 4 inch (10. Damaged/Collapsed buildings often contain lateral as well as vertical instability. Once the concrete has set (usually about 24 hours), the forms can be removed. DON’T let new concrete get too cold. The floor system of a structure can take many forms such as in situ solid slab, ribbed slab or pre-cast units. Sometimes you might hear concrete pad foundations referred to as floating slab foundations for this reason. Calculating Concrete Volume Calculate Cubic Feet - Measure the length and width of the area where you intend to lay the slab. In addition to internal and external water sources, other environmental conditions, such as ambient temperature and air circulation, impact drying time. 8 to 10 inches for commercial. I'm storing guns, large safe, ammo, etc in a 2nd story bedroom. Slab thickness 3" Anchor bolts incorporated into concrete pour. 6-6 refers to a 6" by 6" grid and 10 refers to the gauge of wire. Most of the time we take footings for granted, and usually we can: For typical soils, a common 16- or 20-inch-wide footing can more than handle the relatively light weight of an ordinary house. This is also called 5 sack cement, because it should have about 5 sacks of cement per cubic yard of concrete, insuring it’s strength. NEVER hand mix your own concrete. For example, a 50' x 50' mezzanine at 125 PSF design load can hold 312,500 lbs. Any additive can potentially weaken the concrete. With a density under 2 lbs. 52 kPa) X-section area: 301 in2 (194,655 mm2) Concrete cover: 1. Structural concrete work is planned to bear loads, or hold weight, but transfer the weight to the soil base beneath the structure. A 6-inch-thick slab weighs only about 75 psf, and live loads The requirement of steel in the floor slab is just to hold the slab in position and avoid cracks. We'll use a 10 x 10 ft. You have 50 round concrete form tubes, cement tubes or any other tubes you need to fill. The formula for calculating the weight of concrete is: Length (in feet) x Width (in feet) x Thickness (in inches) /12 x 150 = weight (in pounds). These are used to meet code requirements for. If the subsoil is compacted to spec, the concrete will not bend under this load. Over the most recent thirty years the most popular method of installing solid 3/4" hardwood on concrete was a plywood subfloor attached to the slab (illustration above). Other options for repairing cracks: QUIKRETE® Gray Concrete Crack Seal and QUIKRETE® Concrete Repair can be used to fill cracks that are from 1/8" to 1/2" wide. The tank contains a monolithic compartment wall. *Weight limits can vary by location. • Sleeper (screed) system – Common over radiant heat, this system has 2-by-4s spaced 12 inches. If too much is added, put in a little more concrete mix. You can calculate this and similar volumes using our volume calculator. It also can leach moisture from the concrete itself, resulting in uneven curing and a brittle base. Example my brother had three CNC machines weighing 8000-11000 pounds in a light industrial park, the concrete was only about 4 inches thick, the machines sat there for years and there was never an issue. If your wall is over 20 feet long it will add the amount of overlap required. Exact Spacing (Width) 16" Middle space 10" Total Bar Length 416. 12 kg per square cm (1. That’s closer to 1,600 psf, too low to support the weight of the building. Concrete cover: 1. A residential post-tensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. The average cost of a concrete slab (6 inches thick) is $5. Factor of Safety. I've done heaps of spa's, pools, and r/w tanks in elevated buildings 1 storey to 22 storey around adelaide. At 1/3 less weight than regular concrete, the savings in dead load reduce the size of the supporting members as well as the final costs. Methods used for finding slab thickness varies for different types of slabs. The best time to pour concrete is when temperatures are expected to remain above 50 degrees for five to seven days, but plans can go awry with the arrival of. My local inspector says there is no code to install a ledger board to a concrete foundation. the maximum amount of water vapor that the air can hold before saturation is 0. For a 6 inch thick Brick wall of 3-meter height and a length of 1 meter, The load / running meter to be equal to 0. If you have concrete delivered it is sold by the yard (which is a cubic yard = 27 cubic feet). Yes! This is the best time to pour it. This step makes for a smoother slab edge that won't collect water, which can freeze and spall the concrete. Pull up the vibrator at an average rate of no more than 3 inches per second; often, 1 inch per second yields the best results. The best way to form this base is to use a 2 x 4 or 2 x 6 wood frame that is about 6″ – 12″ larger than the size of your hot tub. Rebar in patios, basement floors, footings and driveways may vary from size 3 to 6. If it is high strength, it can hold about one hundred and fifty thousand pounds. Good base course (well compacted otherwise it will settle and break the slab), 3,500 psi min. And if you have your slab delivered by your supplier and the truck cannot reach the delivery space, you might have to pay for a pump truck at an additional cost. Re: Calculating the Load Bearing Capacity of Concrete Floors 12/04/2009 7:28 AM There isn't any one formula, the selection of which one depends on how the slab is supported, where the rebar is placed, the type and placement of loads, etc. Enter the width and length of your slab in metres. Increasing your driveway's thickness from 4 inches to 5 inches will add 20% to your concrete cost, but the additional inch of concrete will add almost 50% to the load -carrying capacity of your driveway. Commonly, concrete slabs are between 4 and 20 inches thick and are used for a purpose of floor and ceiling construction. How do I figure out how much weight a floor can hold I presently have my 220g tank on the main floor of my house (which has a basement underneath it). The tubing is assumed to be spaced 12 in. Enter the Height of 4 feet (or 48 inches). Branz Corporation, "Concrete Slabs and Conrol Joints", Build, Aug/Sept 2005, Branz, Moonshine Road, Judgeford, Porirua City 5381, New Zealand Post: Private Bag 50 908, Porirua 5240, New Zealand Phone: +64 4 237 1170 Fax: +64 4 237 1171 Email: [email protected] We'll use a 10 x 10 ft. 9 Responses to Concrete. I would think with a good concrete mix, 6x6 WW mesh, a 4" thick slab should handle a 4000 pound car on a four post lift. Factor of Safety. The average cost of a concrete slab (6 inches thick) is $5. A stepped footing, as shown at left, can support a concrete block wall. Credit Application. Choose thicker glass for longer shelves as it can support more weight. 3 lb per ft³ - Allow extra for waste. A monolithic slab is usually preferred in termite areas. Since water is about 1kg to the litre, would a crushed rock base of 50mm, and 50mm concrete do? Or should I increase concrete to 100mm? Area can be ocassionally wet (under eaves but receives a hammer of rain now and then). The area of the driveway is 1,080 square feet (60-feet x 18-feet). Anyone care to speculate on how much weight a floor in a house with a crawl space, not a concrete slab, might hold?. Don't glue the plywood to the concrete. There is no steel used in this monolithic slab. For example, a 4" to 6" slab wants to crack between the 9' to 10' mark. Concrete screws come in 3/16- and 1/4-inch diameter, in lengths up to 3-3/4 inches. Calculate the yards of concrete or how many pre-mixed bags of concrete are needed to pour a slab, patio, footing, column, or post fill-project, including circular slabs and patios. Hansen Pole Buildings uses a 2 x 8 pressure-treated skirt board around the base of the building. Understanding why is a matter of simple math. It can be seen that both methods yield comparable results for the given inputs. From Experience most slabs are going to end up with a load capability of around 500kgs per square meter your spa is just over this. It consists of a four-inch concrete slab sitting on one-inch thick extruded polystyrene insulation (R-5 ºF•hr•ft 2 /Btu), and covered by 3 / 8 in. Calculating a mixer's capacity by the maximum load weight gives a clearer idea of how much concrete the machine can safely produce per load. It might be 4" deep which is a normal depth for a concrete slab. If you have more debris than one dumpster can hold, you can schedule an empty-and-return or rent multiple containers at a time. A 1 to 4 concrete made from cement, 1; hydrate lime, 0. Frederick Landscaping quotes the concrete wall cost per linear foot at $30 to $40 as a ballpark estimate and the price would depend on several factors such the size of the project. According to those #'s I'm way safe. However, the price can go up to $9-10 per square foot depending on numerous factors and enhancement costs. How Much to Pour a Concrete Slab: Estimate a Concrete Order. I'm storing guns, large safe, ammo, etc in a 2nd story bedroom. Methods To Insulate A Concrete Floor. Download Concrete Slab Requirements 2019 (pdf) NEW CONCRETE SLAB RECOMMENDATIONS TWO-POST LIFT MODELS. I have found that most contractors use 2500-3000 psi concrete for driveways. Pull up the vibrator at an average rate of no more than 3 inches per second; often, 1 inch per second yields the best results. With a larger than average set of concrete slabs, you should consider installing. let's say 8cy concrete / 4. You can apply these same standards to concrete blocks and mortar. If that's the case, it takes some math, and the numbers will be slightly fudged as the weight is not perfectly distributed to ea. Sponsored Links. The increasing acceptance of concrete as a major construction material presents the form builder a new range of problems in the development of appropriate sheathing materials and maintenance of rigid tolerances. Basic considerations. Edge - because the cured concrete will have a sharp edge that can cut bare feet, or crack off, an edging tool is used to make a shallow groove between the concrete and the form. 3 Vapor retarder. I am familiar with the widespread range of IIC results from 6″ concrete slab Round-robin testing at North American labs (up to a 12 point discrepancy between labs!), but a 5 point difference at the same lab? Looking into the 1/3 octave band data, I found that this 5 point difference in IIC ratings was determined by 2 dB at 2500 Hz and 5 dB at. How much weight will concrete hold that is 4 inches thick and full cured per square inch? Find answers now! No. Use this calculator to find the amount of concrete, cement, topsoil or water you need for a rectangular solid shape when you know the length, width and depth. Even 2 inches of water will absorb a lot of heat, and evaporate off. 73 Steel reinforced concrete rock face base panel’s (sometimes referred to as gravel boards) are a decorative panel to fit under wooden fences to prevent contact with the ground (rotting) or to keep back soil on different levels. Discussion in ' Trucks and Trailers ' started by kps2389, Jul 4, 2009. The average cost for a standard 12′ x 12′ shed concrete slab costs roughly: $720 – $1,200. AASHTO Type IV - LRFD Specifications Detailed Design Examples - 7 Table A. Give it a broom finish and let it cure for about a week or two before driving on it. Rebar, Wire Mesh or Fibers in A Concrete Slab? The great debate on whether to use rebar or number 10, 6 x 6 wire mesh in a concrete slab may go on forever. Puncture. Concrete slab floors do require that all subgrade utility rough ins be completed before the slab is poured and be accurately located. 9 Responses to Concrete. Third Method (Engineering Not Available) In counties areas (outside cities and towns)Alabama metal buildings have been anchored for decades in the following way: In the 4" concrete slab put #3 rebar on 24" centers. The latter is assumed to be perfectly bonded to the top of the slab. Okay, I recently moved into a new construction residential home that is stick framed. Once your concrete floor starts to crack and become uneven it needs to be repaired in order to prevent further growth and additional cracks. Cement rated at 3,000 psi for $126. On the other hand, so-called "topping" or resurfacing mixes with very fine aggregate can be applied in thicknesses from under an inch to a feathered-edge. Each inch of reinforced concrete above the tank can be con-sidered equal to 2 inches of compacted backfill. Shortly, what you have is 4’ x 10” tubes. 500 kg/m2 is typical for office, storage space and similar. 400,000 pounds - (200 pounds/sq ft x 2000 sq ft) - weight of house + concrete slab foundation. How thick should a concrete slab tank base be to support a water tank holding 5000 gallons of water? Answer: Jaytee, Thanks for the question. Polyurethane is durable and can last for a very very long time (years) without needing a touch up. Garage Concrete Floor Slab - Construction, Thickness and Cost It is good to have a 40mm aggregate concrete base on the soil on which the reinforcement can be placed. Nail strap from the bottom up. 5m in length and 6. Thinner slabs can be used for exterior paving. Wood Rail: This is a simple way to put a foundation under your storage shed. The total concrete needed for the 3' by 3' porch will be. The limiting factor that you need to consider is the strength and compaction of what's under the concrete. Insulation board 1 to 1 1/2 inches thick can be installed vertically around the outside of the foundation to a depth of 1 to 2 feet. Water vapor molecules more easily take the shape required to pass through the concrete mass, whereas the liquid state becomes a solid that maintains a definite volume or size. Sponsored Links. I have a 4"/5" slab with 3/8" rebar on 24" centers. The concrete will set faster than you can mix and pour it, and you’ll end up with a poor pour and a nasty finish (unless you are willing to work in. Myth #11: "My two brothers and I weigh 800 lbs together and we jumped off the sofa onto my floor and it didn't break, so I know that the floor can safely hold more than a 800 lb aquarium. If a hairline crack in slab foundation is deep, it can lead to wider, more severe cracking inside the slab over time. Even if the mesh was properly pulled up into the center line of the slab thickness it is really a minimal technique. 5″ thick slab, can be assumed to spread the load to the material below the slab (sand in your case) over an area of 10. 3 lb per ft³ - Allow extra for waste. 38 : Unused Minimum Labor Balance of 2 hr(s) minimum labor charge that can be applied to other tasks. 02, and the slump can change by 1 inch per cubic yard of concre t e. Author Topic: Can my 2X12 floor joists hold a 2000lb bandsaw? (Read 9866 times) 0 Members and 1 Guest are viewing this topic. It’s not that difficult to attach a wood handrail post to a concrete walk, patio or porch slab. Day, 2011). The standard concrete slab slope is 1/4 inch per lineal foot. Buy an 80-pound bag of packaged concrete mix, and with it get a 9 inch or 10 inch brick or pointing trowel (Figure 1), a hoe. See typical tasks and time to remove a concrete slab, along with per unit costs and material requirements. This problem can cause some concern for the consumer as it temporarily detracts from the appearance of their project. How much weight can a 5 concrete slab hold? The strength will vary depending on the type of concrete, the base, and the presence or absence of steel or fiberglass reinforcing. Other options for repairing cracks: QUIKRETE® Gray Concrete Crack Seal and QUIKRETE® Concrete Repair can be used to fill cracks that are from 1/8" to 1/2" wide. The wall sits on a pressure treated 2×4 on top of a weather barrier that sits on the concrete slab itself. Overlay stones no larger than 1/3 thickness of the overlay. They may be pre-stressed (in the factory), post-stressed (on site), or unstressed. I recommend use of M20 grade of concrete (1 part. Mon-Fri: 8 AM – 4 PM. It has a foot print of four tires about 10 inches by 10 inches time 4. This is why we build skyscrapers out of concrete, or partly why. The top bar corrugations are on 1" centers to aid rebar placement. Structural concrete work is planned to bear loads, or hold weight, but transfer the weight to the soil base beneath the structure. Using a minimum 5/8" CDX (3/4" recommended) plywood, the material is installed over the same moisture barriers (mastic excluded) but attached by way of concrete fasteners. We'll use a 10 x 10 ft. However, the price can go up to $9-10 per square foot depending on numerous factors and enhancement costs. Even 2 inches of water will absorb a lot of heat, and evaporate off. I am familiar with the widespread range of IIC results from 6″ concrete slab Round-robin testing at North American labs (up to a 12 point discrepancy between labs!), but a 5 point difference at the same lab? Looking into the 1/3 octave band data, I found that this 5 point difference in IIC ratings was determined by 2 dB at 2500 Hz and 5 dB at. The weight of concrete is determined by its density, which can vary based on the amount of aggregate, water, and air in the mix. The answer requires a thorough explanation. A concrete slab has many positive attributes as a shed foundation, but it’s a very labor-intensive undertaking. 375 For: L/D of 1. Author Topic: Can my 2X12 floor joists hold a 2000lb bandsaw? (Read 9866 times) 0 Members and 1 Guest are viewing this topic. Existing 2 x 4 walls do not preclude a second floor, but they must be looked at carefully (visually and by calculation) to assure that they will accept additional load. You should search around the edges of the whole slab to see how much more evidence you can find of “mesh at the bottom”. Ghosh Associates, Inc. A simple project to raise a slab of concrete will cost less than, if there is a large void under the slab requiring more material. A 4- or 6-inch layer of gravel lies beneath the slab. The minimum reinforcing cover for all reinforcing bars is 2 inches. Factor of Safety. 6" Garage Slab Thanks for all the input, makes me more comfortable with the 4". The problem with the concrete floor being so thin is it will not be able to support much weight without breaking up and getting worse. IDOT CA-6 which contains 3/4" limestone and crushed limestone can be compacted a lot easier and is better suited as a base. Polyurethane is durable and can last for a very very long time (years) without needing a touch up. weigh as much as 5,600 pounds. The cost of concrete for a slab garage floor includes the delivery of concrete and any material overages as a result of waste. I've done heaps of spa's, pools, and r/w tanks in elevated buildings 1 storey to 22 storey around adelaide. 043 lb/ft ) Slab Volume 120 ft³ - Area 240 ft² #N#Concrete rebar calculator plan view diagram. Concrete Slab Mounting Slab Sizing. When building a landing for deck stairs, typical 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. 5 inches is 5/36 yards. Pour some of the concrete into the trench, filling it a little less than halfway, spreading it with a rake as you go. this usually adds 4-5 bucks to the cost but can double the lateral strength of the concrete 2- scrap the rebar and use welded wire instead. For example, let's calculate how much concrete is needed for a 5-inch thick rectangular driveway, 60-feet long (length) and 18-feet wide (width). This problem can cause some concern for the consumer as it temporarily detracts from the appearance of their project. This drill bit can also be used with a Tapcon® Installation Kit. If it is high strength, it can hold about one hundred and fifty thousand pounds. Forklifts to be used in the building impart 8,000 pounds of force at the wheel, which has a 6-inch by 10-inch tire footprint on the slab. With a density under 2 lbs. 043 lb/ft ) Slab Volume 120 ft³ - Area 240 ft² #N#Concrete rebar calculator plan view diagram. Although concrete is a very strong building material, it does have its limits. Calculate the yards of concrete or how many pre-mixed bags of concrete are needed to pour a slab, patio, footing, column, or post fill-project, including circular slabs and patios. slab like this one would cost $3,000 to $4,000. 5)/27 = 6 CU. Since you can span 13" with a 2×8 SPF joist on 16 inch centers, but you ultimately decide to only span 8 feet with your joist on 12 inch centers, the weight bearing increases. 5′ or 3′ on each side. Cement backer board can provide a solid, flat surface to install tiles on if you have a wood subfloor. Estimate any other loads (e. Steel ties can be installed onto the existing ballast, unlike concrete ties which require a full depth of new ballast. A triaxle should gross at least 66k; 20K front 12K drop 34K tandem. 55 inch (39 mm) Concrete type: Type N Slab thickness: 12 inch (304 mm) Slab weight: 86 psf (4. If too much is added, put in a little more concrete mix. 46,656 cubic inches in one cubic yard (36” x 36” x 36”) For example, to find the amount of concrete needed for a slab 3” thick by 10’ long by 10’ wide: Convert the dimension in inches to feet (3” ÷ 12” = 0. If you are planning on buying bags of premix concrete then check out our Premix Concrete Calculator (how many bags to buy). 2 inch nominal depth, 36 inch coverage 7 foot to 12 foot Optimal Span Range No Acustadek® Option Least steel weight per square foot floor deck Meets SDI 2x12 inch standard profile requirements Reduced composite slab depth compared to 3WxH-36 and NH-32 Composite deck 2 inch nominal depth, 36 inch coverage. My house is a load bearing structure built about 50 years ago. 2) Plastic Shrinkage These cracks also occur when the concrete is cured incorrectly, i. The slope should be away from the house, garage or other structure. Exact Spacing (Width) 16" Middle space 10" Total Bar Length 416. - They're 2 different things: (And when we go back to the moon, let's go Metric, ay?) Please help promote this free service - Tell a Friend about this site! Create PDF to print diagrams on this page. A 1,000 pound lathe and mill is a nothing burger really. 5 x 4 = 2 ft 3 (cu ft. In addition to the analytical approaches noted by others, you should consider an elastic layer analysis of the slab, checking the lateral tension at the bottom of the slab (you can do similar with a von Mises FEA stress analysis of a plate section, using concrete properties for the plate. Two years ago, my 40 year old house on a concrete slab flooded (6 inches of water for a few hours). So, since the inside deminsions are right at 6ft by 6ft, and I read where concrete weighs about 150 pounds per cu. Materials: a silicone ice cube tray, magnets, concrete mix, a bucket or container to mix the concrete in, a stick for stirring, and a cup to scoop the concrete with. concrete, at least 6-inches thick (that does not mean a 2" x 6" which is only 5 1/2-inches thick) as a good starting point. Your floor should be a minimum of 4” thick. It is available in 5' lengths and heights from 3/4" to 4" in 1/4" increments. the slab's control joints, running the tool Place the concrete as stiff as possible. The weight that a 4×4 beam can support horizontally depends on the type and quality of the wood used. Glass thickness between 3/8th and 5/8th can support heavier items compared to 1/4th thickness. Ordering Concrete How to Order/Specify Concrete size of the rebar you need depends upon how much weight and movement you expect. much thinner, cheaper and easier to work with. However, adding that extra inch boosts your driveway's weight capacity by 50%. Concrete floor slab is more like. How Much to Pour a Concrete Slab: Estimate a Concrete Order. Then others said it was much easier to keep rebar centered in the slab during the pour. That's closer to 1,600 psf, too low to support the weight of the building. 28 cubic yards. Materials: a silicone ice cube tray, magnets, concrete mix, a bucket or container to mix the concrete in, a stick for stirring, and a cup to scoop the concrete with. Full service solutions. 2 shows, the slab with only 2 inches of concrete cover between dowel and surface performed as well as the slab with 3 inches of cover for up to 10 million load cycles (Odden et al. This will tell you if you if there may be a problem in the project plan that needs the expensive attention of an engineer. The foundation modulus for various thicknesses of Foamular® insulation. Across the US, homeowners report that ready – mix concrete costs about $98-99 per cubic yard. The exceptional high strength of this product makes it the perfect epoxy for handling heavy weight loads. Examples of Hauls. The existing footing is 2 feet wide by 1 foot thick concrete reinforced with (3) #4 rebar continuously. The simple design of the channel slab offers an exceptionally strong, and non-combustible permanent deck. If you want more slump, it is always safest for the concrete to adjust slump at the plant. Use secret cement paint to bond overlay to the old concrete. Basic considerations. 123" diameter. 77 cubic feet (0. Properly designed monolithic floating slab foundations are approved for use on garages and accessory buildings by many municipalities, north and south, across the U. Concrete & Asphalt Weight Calculator Can also be used for brick, dirt, gravel, etc. In general, 6 inch (150mm) slab thickness is considered for residential and commercial buildings with reinforcement details as per design. Compressive strength of concrete for footings to floors should be 2500 -3000 psi or more at 30 days when poured & cured properly. 2000 pounds over a small area is a lot of weight. The latter is assumed to be perfectly bonded to the top of the slab. A 1 to 4 concrete made from cement, 1; hydrate lime, 0. Although concrete is a very strong building material, it does have its limits. The bottom of the skirt board will be even with the bottom of your concrete floor. A typical poured concrete foundation for the home is placed on a concrete footer. Round Measurements To. – Much efficient as compared with the former as it can withstand much pressure. bag provides 0. In SHORING, PART B the student will be informed as toHOW each type of. Then we are laying 2 ft x 8 ft x 2 inch thick rigid insulation sheets between the 2x4's. For example, a 10-foot X 10-foot X 6-inch patio needs 1. Mon-Fri: 8 AM – 4 PM. A monolithic slab is usually preferred in termite areas. - They're 2 different things: (And when we go back to the moon, let's go Metric, ay?) Please help promote this free service - Tell a Friend about this site! Create PDF to print diagrams on this page. Concrete and cement can get expensive, so it pays to know how much concrete you need for your next masonry project. Standard - nominal 8 inch wide, 8 inches high and 16 inches long (8x8x16) Header - same size as a standard block but with the top notched out for the concrete slab (see photo below) Half-high - same size, except only 4 inches high (8x4x16) 12-inch block - 12 inches wide (12x8x16) instead of 8 inches. a general rule. Submerge the vibrator head fully into the concrete, and hold it there for at least 10 seconds. Although pricing for the job itself has many variables and can fluctuate across the country, it is approximately 20% more concrete cost to go from a four inch thick slab to a five inch thick slab. Even an inch extra in spacing can reduce the concrete's tensile strength by 20 percent. Increasing your driveway's thickness from 4 inches to 5 inches will add 20% to your concrete cost, but the additional inch of concrete will add almost 50% to the load -carrying capacity of your driveway. If you’re finishing a basement most building codes require a minimum finished head room of 7′-6″. For a 6 inch thick Brick wall of 3-meter height and a length of 1 meter, The load / running meter to be equal to 0. I have been given a 225 gallon aquarium and I would like to set it up in my (rental) house. 60-pound bags yield 0. Download Concrete Slab Requirements 2019 (pdf) NEW CONCRETE SLAB RECOMMENDATIONS TWO-POST LIFT MODELS. The foundation that your house is built on can have a major impact on the structural integrity of your home. 25’) Multiply the three dimensions together to find the number of cubic feet (0. 2) Plastic Shrinkage These cracks also occur when the concrete is cured incorrectly, i. Driveways that handle heavy traffic from dump or trailers need to be thicker than driveways intended for a four-door sedan, for example. This compresses the concrete, arches the members, and creates a built-in resistance to service loads. 50 per cubic yard. ) Concrete Calculator. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. As a general engineer’s guideline, cracks that are hairline up to 1/8 inch in width are considered negligible to slight, 3/16 – 9/16 inch are moderate, 9/16 – 1 inch are severe and over 1 inch are very severe (Forensic Geotechnical and Foundation Engineering, R. The total load for each tributary area is then divided by the area of each footing in order to determine the load psf imposed on the soil. 40# per sq foot for a 3 inch thick reinforced concrete slab with corrugated steel underlayment on 24" spaced structural members seems way low. A 6 mil (0. Although concrete is a very strong building material, it does have its limits. Slab Thickness. A five inch by five inch thick concrete slab can hold ten thousand pounds if it is medium strength. Re: 8 inch I-beam - how much will it hold? > I can affirm by experience that a 6" standard I-beam, 16' between > concrete. Reinforcing wire or fiber should be added to increase the strength of the slab. Figure out the sq inch base of the water tank and divide that into 20,750that will give you pounds per sq inch. Processing. My neighbor was pouring a slab of concrete in his drive was and he had some extra material. For example, a two-car driveway can hold over 10 tons of concrete depending on its exact dimensions. High strength concrete would fail at about 40 MPa (6,000 pounds per square inch). Any help on how to figure this out would be greatly appreciated. This 'ratwall' was designed so the weight of the building would be supported by more than the typical 4 inches of the slab. Don't glue the plywood to the concrete. When a concrete floor slab is subjected to forces, it flexes and bends. The inspectors here like to use wire mesh and fiber. The total concrete needed for the 3' by 3' porch will be. 5″ thick slab, can be assumed to spread the load to the material below the slab (sand in your case) over an area of 10. Observation holes which were 4 inch in diameter were located to monitor the deterioration of the void boxes. Square or Rectangle Concrete Slab: Notes: Pre-mix concrete comes in bags that are 60 lbs. Water weighs 8. Good base course (well compacted otherwise it will settle and break the slab), 3,500 psi min. This bit can be put into a drill with a Jacob's style chuck. ” Stucco is a somewhat colloquial term for portland cement plaster, and. Weight of Concrete It is important to know the weight of any section of concrete that is being cut. In addition to guns and ammo, I also have an office desk, file cabinet, and. The porch also has 9 linear feet of 6" step. For the short side, 240 inches divided by 14 inches gives you 17 lengths of 20-foot rebar plus a bit left over. • Resist the impulse to loosen the mix with a lot of water when it arrives. you could drop an extra thousand bucks on concrete and significantly thicken the post areas.
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