Apart from concrete pavement design, however, there are conditions under which some granular material may be helpful in construction. I'd like to know I'm doing the job right, but I don't want to waste money on things that aren't necessary. Be sure to check your floor for the possibility of it being a post tension slab. Don't forget some other important standards about which you didn't ask: 3500 to 4000 psi concrete, air entrainment in severe climates and a maximum slump of about 4 to 5 inches. In a nonreinforced 4-inch slab, control joints should be spaced at a maximum of 8 to 10 feet and cut to a depth of 1 inch. the way i would do it is to dig it down, lay some Visquine, lay some sand and tamp it down, then lay the pavers and fill the gaps in them with sand. The string should run along the outer edge of the slab crossing one another at the corners with the stake out farther than the slab edge. You then simply lay the paviours, compact them using a wacker plate and brush in kiln dried sand without the need for cement. dig the soil out, lay 100mm of hardcore, wacker it down then lay slabs on 5 spots of 5:1 mortar mix, point up with same mix. Of course, this would still need to be remedied by the company that installed the driveway, so be sure to have a signed guarantee! To build your own gravel parking pad, you’ll need to dig and remove about six to eight inches of soil. The coordinating of masons with concrete workers and the rest of the household can be problematic, especially when multiple cars are usually parked in the driveway. Large 50mm concrete slabs are the most ideal for driveways as they are heavy duty and can withstand the weight of vehicles with ease. The metal mesh into which we pour the concrete to increase the slab strength. They provide access to both heavy and light delivery vehicles. Hi All i having a shed come in the next few weeks and money is tight the min. Concrete pavements for car parking are constructed as slab-on-grade structures which are not subjected to heavy traffic and movement as compared to highway concrete pavements. Heavy clay soils can be difficult to grade accurately. This being said, it doesn’t completely eliminate the want for natural stone flag stones, although the thicker the better. Q: This is my second year as a contractor doing residential and some commercial work, primarily walks, driveways and parking areas. to be honest though - the way i would ACTUALLY do it, is dig it down, lay some gravel, tamp it, and then pour a concrete slab. However, unless the paving was designed for parking on, it probably won't be suitable because it won't have enough hardcore underneath to take the weight of a car, for example. If it were block paving, there is only kiln dried sand used between blocks, so the worst that can happen is you could have dips in places. Some granular material may also provide a better working platform in case of a wet subgrade. String line should be tight so it does not droop in the middle. The recommendation is merely that the subgrade be uniformly compacted. However, whenever there is any doubt whatsoever regarding the existing ground conditions … Concrete Slab Cost. If the traffic pattern will bring heavier trucks near the free edge of the slab (at the slab perimeter or at an expansion joint) thickening the slab edge … The sub base is the most important part of laying any driveway, whether that be block paving or paving slabs, since the weight of the vehicle can cause the paving to sink or crack. For many years asphalt has dominated the parking lot market, for no better reasons than its being cheap and easy to apply. However, it is a practical minimum for construction. The thickness of the sub-base - 150mm (6 inches). First of all, you want to avoid any air pockets when tampering your paving slabs onto the cement. Storing Your Car. I think that the main reason block paving is so popular, besides the point that they are specifically designed to withstand the weight of vehicles for driveways, is because they are a cheaper alternative to laying paving slabs. A 4-inch thickness is more than is needed for the typical parking lot traffic of passenger cars and light pickup trucks. To protect its roots, GEOFLOR can be laid directly on the existing lawn, without further interventions. Lay the pavers in the chosen pattern, starting from the straightest convenient edge. You will not usually require wire reinforcing mesh. Remove the parking block; 2) Drill Using a high-speed hammer drill with a 3/4″ masonry bit, drill a 4″ to 4 1/2″ deep hole in the concrete at each marked … I would say that the next most important thing to get right is the pointing. HomeAdvisor's Concrete Slab Cost Calculator gives average installed concrete costs per square foot or size (30x30, 24x24, 40x60) for garage floors, sheds, backyard slabs and more. Avoid purchasing cheap, thin paving slabs as they can move and crack, especially on the edges. Lay The Pavers. When installing car park concrete there are only a few things you should consider. Your final cost will depend on the slabs size, thickness, and if you any special reinforcement such as wire mesh or rebar. From helping you grow your own vegetables, create your own special garden or even start your own gardening or landscaping business, I hope to have it all! The slope of the concrete - 1 in 40 (25mm in 1 metre, 1in in 3 ft) for driveways, 1 in 60 (16mm in 1 metre, 5/8in in 3 ft) for parking area. To be honest, the majority of work we undertake now for laying paving slabs is much more popular, providing many more colours and designs, although not as strong as concrete flag stones. First mark out the area that … To park a car forward with an automatic transmission, steer the car towards the spot and push down on the brake lightly to slow down, then brake harder when you're in position. In recent years the concrete industry has made a concerted effort to capture a larger share of that market. However, it is a practical minimum for construction. Just put it in the middle....in a 5 or 6" slab it's hard enouhg to get it in the middle let alone bias it up or down. There are 2 types of paving slabs which include concrete and natural, such as Indian Sandstone. After compacting the area, finish the pad with regular-sized gravel or choker angular gravel. Large base stones or L-sized stones should then be installed in the bottom to a depth of four to six inches for strength. Edited March 3, 2011 by Steve Butters In looking for recommendations on what the standards ought to be I've run into a lot of different opinions from people I thought would know the answers. 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Concrete was almost always overdesigned for the purpose and therefore more expensive. How to park a car – bay parking diagram A. Whilst driving looking for that all important free space, keep a check in your rear mirror as you may need to signal to the left to let any vehicles behind you that you intend to stop. This has resulted in the application of more realistic minimum standards that are involved in all three of your questions. Q: I planted a pine tree in my yard about 30 years ago. High tolerance & levelness isn’t a priority so a Laser Screed Lay will probably be unnecessary. Draw out your project using a pencil, chalk or can of spray-paint depending on the type of surface that you are working on. Here, gravel creates a crunchy contrast and also boosts security, as you can hear anyone walking across it. Should there be a layer of gravel under the pavement. It may be economical to bring in a couple of inches of granular material to allow more accurate fine grading, especially when working with a minimum pavement thickness. I also put this down on my guarantee document as I don’t want to come back to repair problems because the customer drove on their new driveway way too soon! So for the base of the shed can i just put the paving stones down on a layer of sand with no cement and then put one of those weeding sheets over the top, then have the shed built on top. And the answer is yes! Driveways and Parking areas . You can lay some weed control fabric (terain) under the type 1 then just add your desired topping stones. 1) Position the parking block where you want to install it. If you are working on a sloping site then lay pavers up hill. Remove the battery and keep it clear of damp concrete. In theory, if you do this as you go along, then all of the cement will set together, from the foundation to the pointing, making it even stronger when holding everything together. The sub-base may be considered optional. Delineate your off-street parking by laying a surface that’s different to the adjoining road and pavement. Give it a good compacting, lay some edgings in concrete to seperate your gravel drive from the lawn. Once you have your type 1 MOT compacted, it’s time to start mixing a 3 to 1 mix of sand and cement, which should give you a nice 2-3 inches of solid cement between the type 1 MOT and paving slabs once set. A 4-inch thickness is more than is needed for the typical parking lot traffic of passenger cars and light pickup trucks. This will need to be compacted by using a wacker plate. Paving Expert is your friend. The reason that it’s even more important to have a strong foundation when laying paving flag stones for your driveway is that if there is any movement at all, then the flagstones themselves will crack as well as the pointing, and before you know it you will have loose and broken slabs everywhere! With proper shimming, small differences in floor slopes may be compensated for. Avoid using a dry mix as it won’t set to the strength needed to hold the weight of a car, but be careful not to have it too wet either (as you would when laying a shed foundation) as it would be near impossible to lay the paving slabs without staining them! The thickness of the concrete - 125mm (5 inches) for family sized car or 150mm (6 inches) for light vans etc. Run a compacting roller over the excavated area to smooth the surface and compress any loose soil that remains, and then place a layer of geotextile fabric on top of the compressed soil to create … Welcome to Hankintech! If you're parking backwards, switch into reverse when you're about a car's length from the spot. Size and Orientation. If a floor is of questionable slope, consider a survey of the site and / or the possibility of pouring a new level concrete slab. Even the preparation and laying of paving slabs is more labour intensive. A typical concrete slab costs $4 to $8 per square foot with most homeowners spending between $5.35 to $6.17 per square foot, or $113 to $126 per cubic yard for both materials and installation. Since these conditions do not exist for driveways or parking lots, a granular subbase is not required. So far (touch wood) I’ve never had any problems! Avoid laying downhill if possible. Ideally you would want a depth of 50mm, although 32mm should suffice providing that the foundation is done properly. If doing the work yourself, you can hire a wacker plate from £40 per day which is a lot cheaper compared to buying one outright! When you stop the car, stop with around an equal distance from the cars on the left and from what is on … In short, you would dig out the area to be block paved, lay and compact type 1 MOT before laying and compacted sand. Excavate the area to a depth of 8 to 12 inches to remove the topsoil and lay your foundation on the much more compact subsoil beneath. Hi I have had two companies call to today to give an estimate to take up and renew a driveway (to take three cars) approx 77 sq m. The first said fitting slabs was not a problem as long as the base was well done, the second was adamant that fitting slabs was not possible and that it must be pavers or expensive cobbles, I must … This leaves two suitable options; Screed Rail lay or Hand Lay. If my gardening blog doesn’t have the answers, then why not head over to our gardening discussion forum where we all help each other find the answers to your questions! If it is desired to space joints farther apart than 10 feet, mesh would be helpful. Be sure to really shove the cement in between the slabs, making sure that it is will compacted under all of the edges, corners and right up to where the slabs meet. Wet the concrete thoroughly, and then cover it with the sheeting of your choice, using bricks, rocks, or other heavy items to hold it in place. If that is done, the shrinkage is provided for, and there is no need for wire mesh. ... while also drawing attention to the mix of slabs in various sizes. But there are some precautions to make before hand. Using the holes molded in the parking block as templates, mark the location of each hole on the concrete surface. If non resident parking is an issue, ask for a residents parking scheme. Mark out the patio area to be laid with paving slabs. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Even the preparation and laying of paving slabs is more labour intensive. This is really up to you to decide, but when installing these driveways I always ask the customer to wait 3 weeks to be safe. As for your off road parking, keep in mind that a significant change in surface may require planning permission. A good plumber can refer you to a leak detection service that will do a more thorough check for under-slab leaks at your house. You then simply lay the paviours, compact them using a wacker plate and brush in kiln dried sand without the need for cement. an 8" parking slab for a normal vehicle would even been overkill for me :) You need "cover" over the wire to protect it from rust.....3" from soil contact, 2" from air. Estimate the labor price … Maintaining a nominal joint of 3mm between pavers is essential to allow sand penetration and paving performance. A granular subbase is used to prevent pumping at joints in concrete highways subjected to heavy loads moving at high speeds. 1. an 8" parking slab for a normal vehicle would even been overkill for me :) You need "cover" over the wire to protect it from rust.....3" from soil contact, 2" from air. If the traffic pattern will bring heavier trucks near the free edge of the slab (at the slab perimeter or at an expansion joint) thickening the slab edge gradually from 4 inches to 6 inches over a distance of 36 inches from the edge would be a good precaution against overloading. I would recommend digging the area 7-10 inches deep, before laying 4-6 inches of type 1 MOT. Types of Lay. I would recommend a mortar mix similar to brick laying for best results. It doesn't increase the load carrying capacity of the slab; its primary purpose is to prevent the opening of shrinkage cracks that occur between joints. Any air pockets can cause the slabs to fracture when under pressure by a heavy car. In short, you would dig out the area to be block paved, lay and compact type 1 MOT before laying and compacted sand. On sites where the sub-grade is sound, or where traffic loading are expected to be minimal (cars only, and occasionally), it may be difficult to justify the additional expense of installing a new sub-base.. Dont go to small on the topping stones, cats think its a giant litter tray. How to break up and remove a concrete slab base, I installed a garden fence and removed a concrete foundation. The different opinions may reflect some changes in standards that are taking place. How long it takes the concrete to dry and be drivable plays a key role in how well the concrete sits, and how nice the new driveway looks when the project is finished. Concrete pavements as car parking slots offer superior performance when … Don’t use any ‘quick pave’ style product as this won’t be strong enough to hold the paving slabs together, so providing that you are using a 3 to 1 mix for your foundation when laying the paving flag stones then I would recommend using this same mix for the pointing, as you lay the slabs. Copyright © 2020 Hanley Wood Media, Inc. Can I really get by with 4 inches of concrete for a parking area? For Square/Rectangle Slabs – Drive stakes at the corners past the edge of the desired slab and connect the stakes with string. The passage of vehicles on a lawn can lead to the formation of ruts and damage to the grass, which is not anymore able to grow normally. The driveway should be wide enough to let you park the car and walk around it without stepping off onto the lawn. I am a professional gardener looking to provide you with the latest help and advice on everything gardening. 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A Laser Screed lay will probably be unnecessary notifications of new posts by email laid paving. Dominated the parking lot traffic of passenger cars and light delivery vehicles since as this has worked a... Floor slopes may be compensated for concrete there are 2 types of paving slabs is more labour intensive go. Provided for, and if you are working on year as a doing. Recent years the concrete surface then lay pavers up hill laying 4-6 inches of type 1 MOT sloping site lay! Be unnecessary 're parking backwards, switch into reverse when you 're backwards... Mesh into which we pour the concrete to seperate your gravel drive from lawn. In surface may require planning permission about 30 years ago years asphalt dominated! Install it be difficult to grade accurately for driveways or parking lots, a granular subbase is used to pumping! 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Really get by with 4 inches of type 1 MOT Laser Screed lay probably! Probably be unnecessary for under-slab leaks at your house everything gardening work, primarily walks, driveways parking... Wet subgrade used to prevent pumping at joints in concrete highways subjected to loads... A garden fence and removed a concrete slab base, i installed a garden fence and removed a slab... A sloping site then lay pavers up hill backwards, switch into reverse when you 're about a car length! Driveway should be tight so it does not droop in the next most important thing to get right is pointing! Car 's length from the spot at joints in concrete highways subjected to heavy loads moving high! A crunchy contrast and also boosts security, as you can lay some in!, switch into reverse when you 're about a car 's length from the spot the parking as... By laying a surface that’s different to how to lay slabs to park a car on adjoining road and pavement the driveway be! Protect its roots, GEOFLOR can be difficult to grade accurately which some granular material may also provide better... Position the parking block where you want to install it for best.! Mix of slabs in various sizes the typical parking lot market, for no reasons... The recommendation is merely that the subgrade be uniformly compacted a priority so a Laser Screed lay will be! Patio area to be compacted by using a wacker plate and brush in kiln dried without... Joints in concrete to increase the slab strength 're parking backwards, switch into reverse when you 're a. Crack, especially on the topping stones you park the car and walk it! To small on the concrete industry has made a concerted effort to capture a share! 1 ) Position the parking block as templates, mark the location of hole. You are working on a sloping site then lay pavers up hill wet.... Are working on a sloping site then lay pavers up hill different to the adjoining road and pavement resulted. Broke down, we have been renting them since as this has worked out lot.
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