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An asphalt parking lot should last over 20 years - and proper maintenance and resurfacing increases the life span. Angle parking requires a minimum of a 16 foot aisle way. Proper drainage is the last essential element in making this determination, which we will discuss in our final piece of this series. 1. During the preparation phase, leveling and contouring is very . In certain rare cases, the recommended thickness could be as much as 10 inches. State Construction Pavement Engineer - Rich Hewitt (386) 943-5305. A proper 2 inch compacted layer of aspahlt on a good base can easily . As we discussed in our previous blog, there are three essential structural elements of pavement that we will review in our Asphalt Pavement Guide series; subgrade preparation, pavement thickness, and drainage. Here are the considerations that have to be made. Asphalt is usually priced by square foot. Heavier use parking lots will need 6 to 8 inches of asphalt. With over 50 years of combined industry experience, the pros at ACPLM are experts at what they do. While this may be true, there are numerous parking lots that are paved with less than adequate asphalt thickness. We work with property managers, facility managers, HOAs, and Condo Associations to offer fast & friendly estimates and knowledgeable consultations. It helps keep your asphalt parking lot in its best possible shape. It is important to consider all of these factors and get a quote before beginning construction. The suggested asphalt parking lot thickness will differ if your parking lot has an aggregate base layer. Make sure that your parking lot space has an efficient layout that is easy to navigate for vehicles to enter and exit. Research Topics. Reach Us. Paver Parking Lot - #3 - Least Ongoing Maintenance. Chapter 6 - Designs for Recreational Uses. (720) 410-5374. When this happens, these concrete slabs move and it may damage the asphalt over time. For heavy duty traffic like, trucks, loading docks, or roadways, we recommend a 2 binder layer. A full-depth asphalt light-duty commercial parking lot will need a layer about 4 inches thick of asphalt on a solid and practical subgrade. Properly fill any cracks before seal coating your asphalt parking lot. Call 303-467-0631 for a FREE estimate today. The exact measurements vary based on site conditions and the amount of traffic you can expect on your lot. Contractors paving private asphalt road. General Asphalt Paving . When considering the construction of a parking lot, it is important to know the daily amount of traffic and the number of cars that will be parking on it. Once the thickness is known for each section of the parking lot, the . To change the grade of the existing asphalt surface, if standing water and drainage has been a problem, it may be milled. Six inches of asphalt is also our recommendation, and standard, for commercial parking lots. Asphalt is usually priced by square foot. We work with property managers to offer timely estimates and knowledgeable consultations. There should be 2 inches of hot mix asphalt on 6.0 inches of aggregate base for light-duty lots. . Asphalt is cheaper than concrete to install, typically . Heavy Duty Parking Lots: If your driveway or parking lot is not paved to the proper thickness, your asphalt will likely begin to deteriorate prematurely. The thickness of a parking lot depends heavily on the amount and type of traffic of that specific lot. Most parking lots are built with a foundation of native substrate soils, which vary in thickness. On average, parking lot concrete is between 6 and 12 inches thick. a light-duty parking lot with an aggregate base on the other hand, requires a 3-inch thick hot mix asphalt to be laid on top of 6 inches of aggregate base. Most parking lots are built with a foundation of native substrate soils, which vary in thickness. MS-22S Principios de Construccion de Pavimentos de Mezcla Asfaltica en Caliente. When we are consulting with a company, they will oftentimes ask, How thick is parking lot asphalt? Several factors go into that answer, so lets take a look at how we determine parking lot thickness, which begins by understanding the layers used to comprise asphalt. . (Corporate Headquarters) A parking lot is often built upon a foundation of soil subgrade and aggregate layer to create a load-carrying structure to your parking lot. How Is Asphalt Priced? How Is Asphalt Priced? Asphalt thickness is one of the most important factors that determine how a parking lot performs. Whereas, an average residential driveway likely wont need the same adjustments. For full-depth, light-duty parking lots, you should use 1.5 to 2 inches of compacted hot mix asphalt applied to the subgrade. Average thickness for parking lot concrete. . Finally, there will be a final asphalt layer of smaller stone, also 1.5 to 2.0 inches thick. Standard commercial lots should be made with an 8.0-inch dense aggregate base layer to provide a stable sub-base foundation. If you expect heavier traffic from trucks and loaded vehicles, your parking lot needs to be thicker to provide adequate support for these traffic conditions. If it isn't, we use professional-grade equipment to pump the water. This sad truth requires some questions to be answered: How does thin asphalt happen? After the soil and aggregate layers, 2+ layers of asphalt pavement are added (a minimum of 2.5 inches). . Compaction of this asphalt base is one . This is generally due to the more sofisticated client and specifications provided. A heavy-duty traffic parking lot receives an average daily traffic flow of 3,000 to less than 24,000 vehicles per day. A good driveway starts with the ground (the subgrade), which must be smooth, firm, and evenly contoured. What is the thickness of Asphalt? A parking lot that gets light-duty traffic often gets less than 1,500 vehicles per day and primarily has passenger vehicles with less than 2% single-unit trucks. A proper 2 inch compacted layer of aspahlt on a good base can easily last for 20+ years, we often see driveways we paved 30 years prior still in excellent shape. On top of that, a densely-graded aggregate, which provides load-carrying structure, is placed, usually around 4 to 6 inches deep. If so, give DC Construction Services a call today. Two-way traffic lanes have a minimum width of twenty-four feet (24) and perimeter circulation road lanes should be thirty feet (30). Are you curious about the thickness of asphalt your parking lot would need? If you are in this situation you might be wondering if it is possible to pave asphalt over concrete, then the answer is yes. Traditionally, asphalt was laid by hand and the only time thickness can be easily checked and modified is before compression. Heavy-Duty Use Parking Lot: 6-inch thick hot mix asphalt layer on . Because you want your parking lot to be long-lasting, DC Construction Services considers all of these factors when determining asphalt thickness. For starters, asphalt pavement is characterized by layers of different materials with specific strengths and functions. Well gladly provide you with a complimentary quote for your project. Heavy-duty Parking Lot A heavy-duty traffic parking lot receives an average daily traffic flow of 3,000 to less than 24,000 vehicles per day. Being a cost-effective option, asphalt greatly reduces the up-front costs of paving a parking lot. The asphalts used on roads and highways vary depending on the traffic they receive, and asphalted parking lots are no different. But, the thickness would depend technically on what you are going to use it for, such as: Road resurfacing; . However, 24-foot aisles are commonly used throughout. For a light-duty parking lot with an aggregate base, a hot mix asphalt layer of 3 thick on a 6 aggregate base is recommended. . Most residential projects are completed with a single layer of aspahlt, this is due to the cost/benefit relationship. Areas frequently used by trucks (like dumpster sites or loading areas) will require thicker pavement to accommodate the heavier vehicles. Maintenance and Repair of Asphalt Parking Lots. Because you want your parking lot to be long-lasting, DC Construction Services considers all of these factors when determining asphalt thickness. The thickness should be about two . Residential Driveways: 6-8" granular base aggregate with 2-3" asphalt. Specification Information. Parking lots need to have a 6-inch granular base aggregate while commercial driveways need to have 8 inches. Sealcoating and crack sealing will extend your parking lot's lifespan, especially if you start early and stay consistent with maintenance. As we discussed in our previous blog, there are three essential structural elements of pavement that we will review in our, When discussing these three elements we are going to speak in terms of residential asphalt pavement vs. commercial asphalt pavement in other words, your driveways vs. your parking lot. To give a basic insight on the expected thickness of a parking lot, the vehicle types and weights should be taken into consideration. For a heavy-duty parking lot with an aggregate base, it is recommended to install a 6 thick hot mix asphalt layer on a 3 aggregate base layer. For a light-duty commercial parking lot . They are categorized into light-duty and heavy-duty parking lots. Compaction. Asphalt Parking Lot - #1 - Most Ongoing Maintenance. The Asphalt Institute recommends a transverse slope of between 1.5 to 3.0% on all pavement surfaces, and an even steeper slope of 3 to 6% on shoulders. Full-depth asphalt for a light-duty parking lot on an excellent subgrade should be a minimum of 4 inches thick. , and stay tuned for the final piece; drainage). However, you can use the above-mentioned formula or an asphalt calculator to find out the amount of asphalt needed for any project. That said, anything over three inches of . Asphalt cost per ton by material - chart. Most often for residential driveways and smaller light duty parking lots we will use pre-compaction thicknesses, which for 99% of all driveways and about 75% of light duty parking lots is 2.5 inches, or once compressed sufficenlty the thickness will be approximately 2 inches. For asphalt parking lots, the type of asphalt that is widely used for this project is porous asphalt. You may also want to decorate the curb for drop-off as it adds additional appeal to your customers. A proper thickness for a parking lot is critical . Traffic Volume and Composition (12 inches to 24 inches thick), and permeable asphalt concrete. Quality Asphalt Parking Lot Paving on Long . You can paint parking lot areas that are outdoors or in covered spaces with either solvent-based or water-based paints. Complete service guarantees. Asphalt - How Thick Should It Be? From as little as four inches to 12 or more inches, the exact thickness will depend on your location, your traffic and local climate considerations. This mixture has been widely used since the 1970s and is primarily used for parking lot construction. It allows for a larger number to be written on the quote, if all of the competition is writing 2.5 inches in pre-compaction but you are specifying a post-compaction thickness of 2 inches, most clients will assume less asphalt is being offered, when in actuality the quotes are offering the same amount of materials. An asphalt parking lot that regularly holds light-duty traffic from, let's say, shoppers in mid-sized sedans will undoubtedly experience less stress than one that carries tractor trailers daily. You can expect the asphalt thickness to fall under the range specified above, if the underlying soil has good drainage. For full-depth, heavy-duty parking lots, he recommends 7.5 inches of hot mix asphalt on subgrade. The poorer the classification (based on how the soil will perform when loaded), the stronger and thicker the base of asphalt will need to be. Whether an apartment complex, office building, or HOA community, the parking lot is one of the first areas people see when they check out your property. Parking Lot Design 5-7 THICKNESS DESIGN FOR 40mm HL3-HL4 Base Course with a 40mm HL3F-HL3 Surface Course - for very light duty use (cars and small trucks only), 50mm HL4-HL8 Base Course with a 40mm HL3 Surface Course - for larger lots which may see some heavy traffic. On rare occasions, a parking lot might only need 4 concrete. In this process, a machine is used to plane the pavement . However, the asphalt should be thicker -between six and eight inches- if it is a heavy-duty parking lot, depending on the base layer thickness. Parking lots that serve . Commercial and residential paving - Part 2. You've probably taken into consideration the quality of the asphalt pavement you are having for your parking lot, as well as the fundamental foundation of the layers beneath them. Even then there's still no guarantee it wont crack Really, the reputable contractors in your area will know what the proper thickness the concrete should be for your parking lot. Before starting this project, it is essential to understand the ideal thickness of asphalt your driveway should have. Our gallery features photos of various older driveways and parking lots. Aurora Asphalt & Sealcoating . When discussing these three elements we are going to speak in terms of residential asphalt pavement vs. commercial asphalt pavement in other words, your driveways vs. your parking lot. A conventional overlay is at least 1.5 inches thick, while a thin overlay is less than 1.5 inches thick. Asphalt thickness is also based on the volume and type of traffic that is expected to use the facility. The types of vehicles that use a parking lot vary and parking lots serve businesses, schools, commuters and other functions. A 2-car driveway needs 7.5 to 18 tons of asphalt, depending on the thickness. Of course it never hurts to ask! Parking for passenger cars, light trucks and occasional use by heavier trucks. If these structural problems are found, the old asphalt will need to be removed to dig out the soft spot of the subgrade and refill it with 2-inches of rock and aggregate. If you are considering construction for a light-duty parking lot, the standard thickness for an asphalt layer is 2-3 inches, depending on the vehicle volume it will receive. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. For heavy duty traffic like, trucks, loading docks, or roadways, we recommend a 2 finish layer on top of the 2 binder for a total of 4. a light-duty parking lot with an aggregate base on the other hand, requires a 3-inch thick hot mix asphalt to be laid on top of 6 inches of aggregate base. Part 2: Subgrade Preperation, Drainage and Pavement Thickness. When we are consulting with a company, they will oftentimes ask, How thick is parking lot asphalt? Several factors go into that answer, so lets take a look at how we determine parking lot thickness, which begins by understanding the layers used to comprise asphalt. That being said, those numbers are averages. Continue to keep the lot clean and free of weeds. The cost is determined by the size of rock in the asphalt, volume ordered, delivery cost . For a standard commercial parking lot with an average amount of traffic and stable soil, the gravel base layer should be at least 8 inches; the binder asphalt layer should be between 1.5 and 2.0 inches, and the surface layer should be the same thickness. Call 888-959-9637 today to speak with one of our trusted advisers. The cost is determined by the size of rock in the asphalt, volume ordered, delivery cost . For your driveway, you should be using between 6-8 of properly compacted granular base aggregate on top of the subgrade. Asphalt overlay thickness varies and is specific to use, load and surface traffic and volume. Actual asphalt thickness is largely determined by the quality of the underlying soil and the volume and composition of expected traffic. It doesn't matter how great the base is, if the asphalt is laid at an insufficient thickness the parking lot likely won't last much longer than 10 years. After the soil and aggregate layers, 2+ layers of asphalt pavement are added (a minimum of 2.5 inches). But to add valuable information to your new project, here are some things to consider to ensure that you have a good parking lot. If you are looking to pave asphalt over concrete, you have to make sure that the concrete surface below is stable and has no expansion joint shifting to prevent crack damage. For lighter duty parking lots, paving professionals recommend at least 4" of hot mix asphalt on top of a compacted gravel base. In this section of the article, we'll outline tips forand best practices ofpaving overlays and thin lifts. Q. For heavy-duty lots, there should be 3 inches of hot mix asphalt on 8.0 inches of aggregate base. Copyright O'Brien Paving Inc. All rights reserved. On top of the base, we typically recommend applying two 1.5 layers of asphalt. Always remember to maintain the quality of your parking lot by consistently sealing cracks and other fissures. Keep in mind though that solvent-based paints are a little bit pricier. 2010 S 51st Street, Due to varying temperatures, aspahlt grades and compaction levels, the final thickness can vary. General Considerations Asphalt Materials Thickness Design for Parking Lots Traffic Considerations Subgrade Considerations Construction Drainage Parking Stall . Because asphalt tends to absorb heat more than concrete does, the addition of trees or shrubbery around can slightly cool the area by offering shade. Layers of Asphalt Asphalt is comprised of several layers of different materials. This thickness is intended for areas that receive light-duty traffic. An asphalt parking lot requires the most frequent amount of ongoing maintenance when comparing to to other hard surface parking lots. . Phone: (512) 677-9001. . Finally, the asphalt surface layer is placed, which is typically 1 to 1.5 inches. What is an asphalt road? The thickness of the Winter Haven parking lot paving will determine the durability of the pavement. All else being equal the big determining factor for longevity of the standard 2 inches of aspahlt is that heavy vehicles like garbage trucks, buses, or other 5+ ton vehicles are very rarely driven over or parked in the parking lot. a full-depth heavy-duty parking lot is recommended to have about a 7.5-inch thick layer of hot mix asphalt to be applied on the subgrade. Typically, the thickness of asphalt ranges from four to six inches. Once the asphalt is in place, the surface will need to be compacted using vibratory rollers that can range from very small to very large, depending on the size of your parking lot. A standard asphalt overlay consists of a new layer of asphalt applied over the existing asphalt surface. Sometimes, a business owner may already have a concrete parking lot that they wish to upgrade with asphalt pavement. It also primarily carries passenger vehicles with less than 5% single-unit trucks and 3% of combination trucks. In this blog, we will focus on asphalt thickness (review our previous blog in the series on subgrade preparation, and stay tuned for the final piece; drainage). The thing is asphalt driveways should always be built to accommodate . Asphalt is a mixture of aggregates, binder and filler, used for constructing and maintaining roads, parking areas . ADA . Data collected about the soil plays an important role in asphalt thickness. For commercial and residential paving and asphalt, parking lot maintenance, lot repair, commercial and residential driveways, and more please contact us today at 616-772-2559! Finally, our experts use the most suitable techniques to cautiously paint the pavement and renew it. This is the third article in a series that provides information on long lasting asphalt pavements for commercial parking lots and driveways. Busy parking lots, like the ones at supermarkets and big box stores are paved in the same way, with two "lifts." Residential driveways, on the other hand, are used only by small numbers of vehicles, traveling at slow speeds. Give us a call today to see how we can help you lower your paving costs and improve your properties. How thick should asphalt be parking lot? Can You Spray Paver Sealer? a heavy-duty parking lot with an aggregate base is recommended to have a 6-inch thick hot mix asphalt layer to be laid on top of a 3-inch aggregate base layer. Life expectancy for a new driveway or parking lot is between 15-20 years with proper maintenance. How thick should Asphalt be for a Driveway? This requires regular maintenance of your asphalt parking lot with crack filling and seal coating to prevent water intrusion that can cause even further damage over time. There are different variations as to how thick an asphalt parking lot should be. Often, but not always, larger parking lots (greater than 10,000 sqft) are quoted post-compaction.
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