Concrete Boat Ramp Construction Manual
29.12.2020
concrete ramp construction details
You can install an inexpensive durable ramp for small boats without pouring concrete. Ramp is for light duty, foot Concrete Boat Ramp Construction Manual traffic, not for motorized vehicles, and minimizes impact on waterline. To see my related Instructables, click on "unclesam" just below the title above or in the INFO box to the right.
On the new page that appears, repeatedly concrete boat ramp construction manual "NEXT" to see Construction Concrete Ramp Boat Manual all of. This ramp design uses precast unreinforced pavers over a crushed stone bed that gradually slopes to the waterline and pavers on a pressure-treated wooden tray that runs into the water.
I bought wet-cast pavers 2' by 3', 2" concrete boat ramp construction manual that have a nonslip surface cast into them, rather than dry-cast pavers that are not durable. Each weighs 75 pounds, so it will remain in Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual place, and I used two 2' by 2' pavers to transition between the overland section of the ramp and the section in the water.
My tray is made from 12' lenths of 2" wood treated to 1. It was so heavy I assembled in on skids near Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual the water line at low tide and slid it into the water once the tide rose. A rim of pressure-treated wood strips contains Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual the pavers on the tray, and cross-cleats underneath hold the boards together and keep the tray from sliding away from the shoreline.
End view of the overland portion of the ramp shows that no excavation was. Landscaping fabric was placed on the ground and covered with enough Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual crushed stone to level concrete boat ramp construction manual gravel bed side-to-side. Heavy lawn edging was run alongside to contain the gravel.
This Concrete Boat Ramp Construction Manual produced a gamp that was level side-to-side but that progressed up the gradual slope away from the water to a line that would rarely Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual become covered by the tides. Cinder-block concerte were added to keep wave action from scattering the gravel. This photo shows the ramp in place as it disappears down into the water.
Mnual nearest part of the path leading down to the ramp, the part that rarely Concrete Boat Ramp Construction Manual is covered by tidal water, is not made of concrete. If I were to rebuild this walkway, I would use planks made of composite Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual decking material instead of wood. By unclesam Follow. More concdete the author:. Did you make this project? Share it with us! I Made Concrete Boat Ramp Construction Manual It! How to Bike-A-Line!
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To see my related Instructables, click on "unclesam" just below the title above or in the INFO box to the right. On the new page that appears, repeatedly click "NEXT" to see all of them. This ramp design uses precast unreinforced pavers over a crushed stone bed that gradually slopes to the waterline and Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual pavers on a pressure-treated wooden tray that runs into the water.
I bought wet-cast pavers 2' by 3', 2" thick that have a nonslip surface cast into them, rather than dry-cast pavers that are not durable. Each weighs 75 pounds, so it will remain in place, and Concrete Boat Ramp Construction Manual I used two 2' by 2' pavers to transition between the overland section of the ramp and the section in the water. My tray is made from 12' lenths of 2" wood treated to 1. It was so heavy I assembled in on skids near the water Boat Ramp Construction Manual Concrete line at low tide and slid it into the water once the tide rose.
A rim of pressure-treated wood strips contains the pavers on the tray, and cross-cleats underneath hold the boards together and keep the tray from sliding away from the shoreline.
End view of Concrete Boat Ramp Construction Manual Concrete Ramp Construction Manual Boat the overland portion of the ramp shows that no excavation was done. Landscaping fabric was placed on the ground and covered with enough crushed Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual stone to level the gravel bed side-to-side. Heavy lawn edging was run alongside to contain the gravel. This produced a ramp that was level side-to-side but that progressed up the gradual slope away from the water to a line that would rarely become covered by the Concrete Boat Ramp Construction Manual tides.
If you are designing a ramp for your private use, it is fairly easy to choose a design that will accommodate boats and Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual towing vehicles that you own or might own. Choosing a design that will suit several boaters or the general public is more difficult. The Concrete Boat Ramp Construction ManConcrete Boat Ramp Construction Manual ual DGIF tries to design ramps that are suitable for most of the boats in the area of the proposed ramp, knowing that Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Ramp Boat Manual Concrete Construction we cannot satisfy the needs of every boater. This article will briefly address site criteria, permits, design, construction methods and materials for typical ramps for launching and retrieving boats in the foot range that are typically used for sport fishing and recreational power boating.
This article presents a number of items for your consideration should you be thinking of building a boat ramp, but is not intended to be a Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Ramp Construction Manual Concrete Boat guide on how to build a boat ramp.
When selecting and evaluating a site as a potential boat ramp site, consideration must be given Concrete Boat Ramp Construction Manual to site accessibility, proximity to Boat Construction Loan Ltd other boat ramps, water depths, siltation rates and usable land area parking, turning radius, etc.
One of the Concrete Boat Ramp Construction Manual more obvious considerations to site selection is its proximity to existing roads and other ramps. Road construction and maintenance is expensive, therefore the Concrete Boat Ramp Construction Manual closer the site is to a maintained road, the better. Also, the DGIF prefers not to compete with private launch-for-fee ramps if they can meet the public demand.
Those thinking of building their own ramp would do well to consider using existing ramps if they are available, and even cost sharing maintenance expenses with the owner. Water depth should be no less than Wood Boat Construction Methods 91 three feet at the end of the Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual ramp during mean low water, though four feet deep is more desirable.
If drive-on trailers will be used for launching and retrieving boats power Concrete Boat Ramp Construction Manual loading , consider extending the ramp to a depth of five feet or installing riprap at the end of the ramp. Another alternative is Concrete Boat Ramp Construction Manual to increase the slope of the ramp for the last feet so the end of the ramp will be in deeper water or dug into the bottom to protect the end of the ramp.
If the end of the ramp is not protected, the prop wash created Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual from power loading will erode a hole at the end of the ramp, which will cause a sharp drop-off and can undermine the Concrete Boat Ramp Construction Manual end of the ramp.
If the trailer wheels are then backed off the end of the ramp that has a drop-off, the trailer Concrete Boat Ramp Construction Manual can hang on the end of the ramp causing damage to the trailer as the wheels are pulled back up onto the ramp. Most Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual older DGIF ramps are not designed with drive-on trailers in mind and we are frequently adding riprap to the end of ramps as Concrete Boat Ramp Construction Manual temporary repairs for the problems caused by prop wash.
Another water depth consideration is the possibility that the water depth will not remain constant. River channels shift from side to side, and might undercut the end of your ramp causing the end to break off.
The same is true with channels in tidal areas, especially when the site is on a point that constricts a larger bay. Just the opposite Concrete Boat Ramp Construction Manual is true of sites at the back of small bays, near stream inlets, or on long sandy beaches.
These sites are often areas of active deposition, where silt or sand might cover your ramp. Dredging and maintenance dredging to obtain deep water is expensive, can adversely impact the environment, and is often complicated since suitable sites must be located for placement of the dredged material.
If dredging can be avoided, do so! The size of the ramp and parking area depends on the anticipated use. Our general rule of thumb is that one launching lane should have about car-trailer parking spaces. Most of our ramps have daily turnover rates of 2. If no more than 80 launches Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual per day are anticipated, one launching lane is adequate. More than 80 launches justify additional launching lanes and parking spaces.
When deciding how many parking spaces can be provided on a tract of land, one should remember that a vehicle-trailer parking space should be at least 10 feet wide and 40 feet long with adequate maneuvering room to line up and get into and out of the parking space. A word of caution concerning boat ramp size is to not underestimate the land needed. Remember that large wetland areas cannot be disturbed.
Also, a 30 or 40 foot turning radius and staging area is needed at the head of the ramp, and no matter how large Concrete Boat Ramp Construction Manual you make public facilities, there will still be some calm, sunny, warm weekend day when it will not be enough. If at all possible, Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual reserve areas for expansion and overflow parking. After you have located a site for the boat ramp, know enough about how you want to build it to prepare a sketch.
The next step is to apply for the necessary permits. A local building permit is also Construction Manual Concrete Ramp Boat Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual required in some localities. To learn what permits will be required, contact the Virginia Marine Resources Commission at Washington Avenue, Newport News, Virginia , Phone , and your local building inspector. The design of the site, ramp and pier will have a major impact on construction and maintenance costs, and the usability of the facilities.
Take the time required to get a durable, economical and functional design. Provide adequate room to bring the towing vehicle and trailer in good alignment with the ramp, and enough space for a staging area to ready the boat for launching.Concrete Boat Ramp Construction Manual
If possible, place the pier on the same side of the ramp as the driver. This will give the driver a better view as they back the trailer alongside the pier. One-way traffic in the parking area and staging area is desirable to reduce congestion. Angle parking is usually easier to accomplish than other parking plans, and reduces the required width of driving lanes in the parking lot. Parking spaces Concrete Boat Ramp Construction Manual and traffic patterns should be clearly marked to reduce traffic congestion and to ensure maximum efficiency of available parking space.
A one percent Concrete Boat Ramp Construction Manual slope minimum across the parking lot and staging area helps prevent ponding of water on those areas, yet causes a slow runoff that reduces erosion on untreated surfaces. The slope should be directed away from the ramp if possible to prevent gravel, sand, etc. If two launching lanes are to be constructed, a single pier between the lanes can serve both lanes and reduce costs and insures that one boater Concrete Boat Ramp Construction Manual cannot tie-up both lanes at the same time.
For high use facilities, a double lane ramp with L-head courtesy piers on both sides Concrete Boat Ramp Construction Manual will help reduce congestion during peak launching and retrieval time. A line should be painted down the center of the ramp to assist boaters in staying on their side of the ramp.
Ramps 16 feet wide are preferred for the general public though many existing foot ramps Manual Concrete Ramp Construction Boat have proven to be satisfactory at low use facilities. Ramps placed in flowing rivers should enter the river at an angle downstream to Concrete Construction Ramp Manual Boat reduce the sideward push on the boat as it is being placed on or off the trailer. Also, a ramp placed at an angle usually accumulates less silt after a period of high water.
If a cut in the river bank must be made, lay the slopes Concrete Boat Ramp Construction Manual back as much as possible to reduce the amount of still water trapped in the cut during flooding, thus reducing the amount of Concrete Boat Ramp Construction Manual silt deposited on the ramp. Provide stabilized ditches down each side of the ramp to handle runoff during heavy rains.
If a pier is needed to assist with launching and retrieving boats, paying close attention to the small details of pier design can save a lot of Concrete Boat Ramp Construction Manual headaches and maintenance costs. Though piers can be made of materials other than wood, only wood will be discussed here.
Remember that a design that uses standard lengths of lumber will be more economical. Piers can be either floating or fixed. Our experience with floating docks is that they are hard to keep in place unless pilings are provided along the sides for the pier to ride up and down. Metal Concrete Boat Ramp Construction ManualConcrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual rong> barrels should not be used for flotation. Plastic encapsulated foam floats are a good choice when flotation is needed.
Note: This sounds Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual good but is not practical, in clay or silt soils it will also result in an unstable piling. Ice damage must be considered on all ramps in Virginia. Ice flowing in rivers and on tides can be especially destructive. If moving ice is expected, the strength of materials must be greater and the design strengthened. Piers can damage boats, and boats can damage piers.
All bolt heads and nails that Concrete Boat Ramp Construction Manual might come in contact with boats should be recessed. Rubrails might be needed to prevent boats from catching under the pier. The safety of the boaters must be considered in the pier design.
Decking should overlap the outside stringers by no more than two inches to help keep the decking from flipping up in the event it comes loose and someone steps on the end.
Many boaters have taken quick trips into the water or their boats from stepping on loose boards when the decking significantly overlapped the outside stringer. Where the water surface Concrete Boat Ramp Construction Manual Concrete Boat Ramp Construction Manual will fluctuate significantly, ladders should be installed to assist boaters in boarding boats during periods of low water levels. One accessory that is Concrete Boat Ramp Construction Manual nice on a pier is a curb. The curb provides a good hand hold while climbing in and out of boats, is an excellent place to tie a boat to the pier, and serves as a kickplate to help keep equipment from being knocked off the pier.
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