Vinyl Seawalls
Vinyl sheet piling used for vinyl seawalls, bulkheads, wave breaks, retaining walls and other various geotechnical applications has been around for roughly 20 years. The earliest vinyl sheet pilings were very thin and had a geometric profile that did not provide for much strength. Since the earliest vinyl sheet pilings, profiles have come through a renaissance of improvements including thickness and shape. The vinyl seawalls that you see on the market today are designed to achieve taller wall heights and are therefore made of thick, rigid vinyl that is extruded in a “z” or “box shape” that allows for a very strong, structurally sound part.
Just as important as the shape and thickness of the PVC vinyl sheet piling, is to consider the type of plastic to use in the extrusion process. When manufacturing vinyl seawalls it is of utmost importance to utilize the co-extrusion process. Co-extrusion is the preferred way to extrude exterior PVC parts. Whether making vinyl siding, vinyl fencing, window frames, or vinyl seawalls, exterior grade PVC that is co-extruded is the preferred manufacturing process. Co-extrusion is a process that allows plastic pellets or regrinds to be molecularly bonded to a 100% virgin cap stock to make up the exterior of the sheet. Having a 100% weatherable capstock that can be as thick as a credit card ensures two primary functions. First, it ensures that the exterior grade PVC is weatherable and can stand up to the harshest environments. Additionally co-extrusion can guarantee color consistency so that each and every time the part is made you can expect to see the same color. In the co-extrusion process impact modifiers are also added to the formula so that the exterior grade vinyl can be rigid and can withstand the rigors of installation and the longevity of performance in the ground
When vinyl seawalls are manufactured using the mono-extrusion process, regrinds (often classified as misruns, or seconds) often purchased on the “open” market, are run through a die. UV stabilizers are added in a way that makes it difficult to ensure that the entire product is receiving an adequate amount of chemical. The TiO2 that is used is often added at a very rough rule of thumb of 8 lbs. of TiO2 per 100 lbs. of compound. This way of “winging” it, although much cheaper to produce than a co-extruded part can often result in a part that chalks, becomes brittle due to UV damage, fades excessively and eventually can fail due to UV degradation, creep failure, and strength loss. Vinyl Seawalls made using the co-extrusion process are more likely to perform as designed irregardless of UV performance.
Once vinyl seawalls are extruded they can generally be cut to any length. The length that the sheet piling is cut at is often a result of how tall a wall height needs to be. For instance, there is generally as much sheet in the ground as is out of the ground. A 16ft. sheet would have approximately 8 foot in the ground and 8 foot exposed. As is the case with any seawall or bulkhead, if poor soils are prevalent, it may be necessary to put more sheet piling in the ground. In poor soils, sheet piling must be driven to greater depths where better soil conditions may exist or where you may be achieve more surface friction in the ground by having more surface area buried.
Another use for vinyl seawalls is to utilize them in an underground cutoff wall application. At many petrochemical plants, industrial plants, land fills, and superfund sites vinyl sheet piling is being used as an underground curtain or cut-off wall. If there is a known or suspected chemical leaching into soil or ground water, vinyl sheet piling can be driven below grade to cut off the movement and seepage of the harmful chemicals. Additionally if the transmissivity numbers need to be reduced even further, the use of a water expanding sealant can be applied to the interlocks. Once this sealant comes into contact wit any type of moisture, it will expand in the interlocks of the vinyl seawalls making it nearly impossible for any leaching of chemicals to occur. This system has proven to be cost effective; the long term benefits of using vinyl seawalls for cutoff wall applications will do nothing but continue to improve and find additional ways to save projects time and money while providing a long-term solution. Visit our website for more information on Vinyl Seawalls.
About the Author
Cook Da’ Books: Low Profile (vinyl)
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Profile UK vinyl record LP SHSP4026 HARVEST 1972 $67.93 |
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Ford Escort Mk.1 Photo Mugs car, Ford, Escort, Mk.1, Mexico, British, Britain, England, English, UK, United, Kingdom, orange, 1970, 1970s, 70s, seventies, classic, saloon, sedan,…. |
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iPhone 4S Sparkling Glitter Vinyl Antenna Wrap for AT&T , Sprint, and Verizon – Sparkling Silver $9.99 Here at Kellokult, we love our iPhones, and the best thing about them is how every one is unique: everybody has a different combination of apps that change all the time. We thought, why cant we have the outside be just as unique and flexible? Designed for users who want their iPhone to stand out without weighing it down, Kellokult antenna wraps are the perfect highlight to the famous iPhone profil… |
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Gipsy Kings $12.96 More than any other band, the Gipsy Kings are responsible for the renewed interest in gypsy music, and this is the album that broke them through to the international mainstream. Although their carefully crafted music is not “pure” gypsy, their impassioned performances create a window for the uninitiated into the deeper world of flamenco and other styles. If you’re not a purist, the Gipsy Kings pro… |
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iPhone 4S Sparkling Glitter Vinyl Antenna Wrap for AT&T , Sprint, and Verizon – Sparkling Turquoise $9.99 Here at Kellokult, we love our iPhones, and the best thing about them is how every one is unique: everybody has a different combination of apps that change all the time. We thought, why cant we have the outside be just as unique and flexible? Designed for users who want their iPhone to stand out without weighing it down, Kellokult antenna wraps are the perfect highlight to the famous iPhone profil… |
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Fein FMM 250Q Top Plus MultiMaster Oscillating Detail Sander Tool Kit $399.00 Designed to help you complete both professional jobs and hobby projects, the Fein MultiMaster FMM 250Q Top Plus is a multi-purpose system for interior fitting and renovation. This all-round package gives you the professional tools and accessories that you need to take on a wide range of hobbies, and interior fittings and renovation projects–from floor and tile work to renovating windows and cabin… |
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No-Hole Hooks Vinyl Siding Hangers – Low Profile – 2/pk $5.00 The No-Hole Hook is the perfect solution for adding decorations to the vinyl siding on your home or business. Simple to use, you just roll the hook into any seam in the vinyl siding. The hook is stainless steel so it won’t rust or stain the siding. The No-Hole Hook is available in 2 styles, this one is called Low Profile and has a slight bend in the design. There are 2 hooks per package. Hooks are… |
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CRL Clear T Type Shower Door Bottom Seal and Wipe – 36 in long $5.28 For Swinging Shower Doors CRL Clear “T” Type Shower Door Bottom Seal and Wipe is for swinging shower doors. Installed into a slot on the bottom edge of the door. Color: Clear Height : 1 in (24.5 mm) Length: 36 in (914 mm)… |
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Black Elastic Eye Patch – Single $1.63 Bulk packaging…. |
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Better Living Products Griipa Suction Mount Towel Bar For Shower Doors, Stainless Steel, 18-inch $19.99 Finish:Stainless Steel GriiPA An amazing new suction technology that clings to smooth, glossy surfaces like glass, mirror and tile. Its patented design is removable & repositionable with no surface damage. Stainless steel and acrylic contemporary styling Vinyl GRiiPA bracket holds up to 10 lbs GRiiPA bracket is re-positionable, re-usable and waterproof! Perfect for vanity mirrors, glass showe… |
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Better Living Products Griipa Suction Mount Double Shower Hook, Stainless Steel $9.99 Finish:Stainless Steel GriiPA An amazing new suction technology that clings to smooth, glossy surfaces like glass, mirror and tile. Its patented design is removable AND repositionable with no surface damage. Stainless steel and acrylic contemporary styling Vinyl GRiiPA bracket holds up to 10 lbs GRiiPA bracket is re-positionable, re-usable and waterproof! Perfect for vanity mirrors, glass sho… |