Boat Ramp Construction Methods | Dewatering Applications Water Access: Installing a Boat Ramp Page 1 of 2 August /revised March Water Access: Installing a Boat Ramp Before a boat ramp construction project begins, the potential impacts of destroying aquatic plants (i.e., fish and wildlife habitat) by construction and subsequent traffic should be considered. The bed of the lake or stream File Size: KB. of a boat launching facility or boat ramp to launch. DoT has trialled and developed a range of boat ramp construction types both within and outside sheltered boat harbours. Over the past five decades it has built up a wealth of knowledge and experience on design for optimum durability, functionality and cost. ITEM 10 M � CONCRETE BOAT RAMP Page 1 of 4 11/30/05 DESCRIPTION This work shall consist of designing and constructing a reinforced concrete boat ramp of the type, CONSTRUCTION DETAILS A. GENERAL The Contractor shall provide complete design details of the ramp structure and a proposed sequence of construction activities. Six copies.
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An association of owners has a membership of over with sail training as a primary part of the association's function to encourage family involvement. New-generation TS is big enough to offer speed and space, light enough to be manageable, and built to world standards. Austral Yachts' new trailerable, besides having the accommodation of a small yacht sails with a yacht-like feel.

Who needs another trailerable yacht when the entire industry is struggling to stay afloat? Race 7 was the discard.

The results after race 6 meant that it was not necessary to start in the race 7. Total points 10, Charisma the 2nd placed boat had 19 points. Race 3: Scheduled Long race was cancelled due to light wind and replaced by a 14nm Island race around Anne Island. Less than 10kts all day. Evolution racing 1st and also Line Honours. Evolution racing 3rd. Evolution racing 1st. Competing on the local stage, the yacht has certainly proved her metal in the Adelaide to Lincoln third across the line , the Sydney Hobart and Skandia Geelong Race Week.

The Farr design office was very keen to be involved in this project and set about researching the rule and coming up with a design that met my objectives of performance and reasonable accommodation for the return trip cruises after ocean races and major regattas.

Since launching the yacht in October , we have done the races from Melbourne to Stanley and Sydney to Hobart as well as the Lipton regatta, sail south week, Docklands invitational and Skandia Geelong week. I am extremely happy with the performance of the yacht, and we are on a steep learning curve with many of the crew who have not sailed on such a powerful stiff yacht last boat was a Super In lighter breeze 5kn - 12kn where the crew work is less critical, the performance has been up there with the 45ft - 50 ft yachts and certainly ahead on handicap.

In the heavier winds we need to develop the skill base of the crew to get consistent results. David Eickmeyer, head of Quantum Sails in Melbourne has also spent a bit of time on board the new Farr Regatta Chairman Tim Goodbody's reminder that 'Volvo Dun Laoghaire is a fun regatta, not a championship' did little to stem the fierce competition for the coveted Volvo prizes in 29 classes as the last race of the event concluded in the lightest winds of the series.

Three national championship titles were decided as part of the regatta programme for more than 3, sailors. The biennial regatta is being hailed an enormous success both afloat and ashore for a combined fleet of boats, the biggest on the Irish Sea. Over races on five different courses were staged in a range of light to very heavy conditions since racing began last Thursday. Although visiting boats, made up nearly half the fleet, yachts from outside the bay area took away only seven trophies.

The bulk of the silverware � 17 titles � have stayed on Dun Laoghaire's waterfront. Trophies were awarded in each of the 29 competing classes plus several premier awards at a special National Yacht Club ceremony this afternoon bringing the curtain down on one of the most successful stagings of Ireland's biggest sailing event. The premier award for top visiting boat went to Harper's Leaky Roof 2.

George YC. Scotland's Clyde Cruising Club took a win in the Sigma 33 class and very nearly in the Beneteau 21 class. Royal St. George YC yachts won in seven classes of one designs from Beneteau The National Yacht. In the one designs there were plaudits for many consistent performers including John Masterson's National Yacht Club based Shipman 28, Curraglas.

Winners of the GP14 series, Gerard Owens and Melanie Morris were eight points clear at the top with six results from eight in the top three. Likewsie in the Squib keelboats, Vincent Delany took the overall prize with six race wins from nine starts.

Contact us by filling out the form below and pressing "submit". If you wish to discuss your project directly then call Michael Keough on. If you wish to discuss your project directly then call Tony Gold on.

Austral Yachts Austral Yachts have been manufacturing quality boats for over 40 years. The interior features provide for safe and comfortable cruising.

Clubman 36 The Clubman 36 is a balance between out and out racing performance and the practical enjoyment of sailing for less strenuous pursuits. Clubman 8 This award winning 8 metre trailerable yacht made by Austral Yachts has a proven reputation for safety and comfort in extended cruising and for winning races both across the line and on handicap throughout Australia.

The interior layout features six berths, a comfortable saloon with fold away table and complete galley facilities. Farr 42 interior for safe and comfortable cruising. Clubman 36 Comfort balanced racer. Clubman Super 30 One design class racer. Clubman Super 30 The Clubman Super 30 is a very competitive 9. Clubman 8 Award winning trailerable. Clubman 8 This award winning 8 metre trailerable yacht has a proven reputation for safety and comfort in extended cruising and for winning races both across the line and on handicap throughout Australia.

The aluminium mast with single aluminium speader is easy to raise and lower. Upwind sails were Evolution made at their Mona Vale Sydney loft.

Downwind sails were Quantum. Summary of each race Race 1: Molle Island race 24nm. Race 2: Island race around Pine Island 22nm. Evolution Racing 1st. Race 4: Island race Around Sidney Island 18nm. Evolution racing 2nd. Another alternative is 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 from power loading will erode a hole at the end of the ramp, which will cause a sharp drop-off and can undermine the end of the ramp. If the trailer wheels are then backed off the end of the ramp that has a drop-off, the trailer can hang on the end of the ramp causing damage to the trailer as the wheels are pulled back up onto the ramp.

Most older DGIF ramps are not designed with drive-on trailers in mind and we are frequently adding riprap to the end of ramps as 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 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 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 you make public facilities, there will still be some calm, sunny, warm weekend day when it will not be enough.

If at all possible, 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 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. 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 and traffic patterns should be clearly marked to reduce traffic congestion and to ensure maximum efficiency of available parking space.

A one percent 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 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 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 have proven to be satisfactory at low use facilities.

Ramps placed in flowing rivers should enter the river at an angle downstream to 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 back as much as possible to reduce the amount of still water trapped in the cut during flooding, thus reducing the amount of 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 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 barrels should not be used for flotation. Plastic encapsulated foam floats are a good choice when flotation is needed. Note: This sounds 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 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 will fluctuate significantly, ladders should be installed to assist boaters in boarding boats during periods of low water levels. One accessory that is 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. If cleats are still desirable, they can be placed on top of a curb to reduce the possibility of someone tripping over them.

There exist a number of ways to construct a concrete boat ramp on the site. Pre-cast concrete slabs suitable for use as a ramp are also available. The diversity narrows on methods of constructing piers, and is mostly limited to how the pilings are installed. Although concrete can be mixed for placing pouring through water, quality control usually suffers and the final results are poor. This method is typically not allowed by permitting agencies and will not be discussed in this article.

The best way to construct the underwater section of a ramp is to cofferdam the ramp area, pump out the water, place pour and finish the ramp in the dry cast-in-place. This method provides for the best horizontal and vertical control of the slab. For low use ramps, a less expensive method Push Method is to form and pour the ramp on a thin layer of sand or crusher run, allow to cure, then push it into the water with a track machine.

If the ramp is poured on shore, it should be on approximately the same slope as your proposed underwater slope to prevent the slab from breaking on a grade change.

Concrete slabs that are moved into place must be small. A six-inch concrete slab 12 feet wide and 20 feet long weighs about nine 9 tons.




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