|OTHER PRODUCTS FROM GRP|
PONTON RAFTS FOR BOATS
The rafts are made of elements of dimensions 5,50 x 2,75 x 0,20m.The mass of one element will be appr. 500 kg. Freeboards of the raft will be between 150 and 170 mm. Under the edge loading of 100 kg/m2 , the total change of the trim will not be more than 100 mm (50 mm by the side) The elements of the raft are be able to connect mutually on all four sides, by the polyethylene tubes and steel stretching screws. This system of connection is flexibile and it will enable the motion of elements of the raft due to waves on loading. The same polyethylene tube is used as the rubbin strip.
The connection of the raft with the bridge and the bridge with the shore will be performed by means of strong hinges.The anchoring of the raft will be by means of the chain of the link diameter of 8 mm and concrete pendtants of the mass of 250 kg. The raft jacket will performed from the reinforced polyester (the used pigment will be UV stable) Threading area will be made rough by strewing of quartz-sand and coating of resin. The cavity of the elements will be filled with rigid polyurethan foam of the approx. density of 40 kg/m3 All steel parts will be galvanized on hot. Calculation of resistance and stability are especially dealt with.
The assignment of the Buoy P-17 is marking the maritime navigational routes in the protected part, coastal belt, at the depths of 5 to 25 metres, with the possibility of application to 49 metres of depth. The hull of the buoy is made of glass reinforced plastic and filled with the polyurethane foam for easier maintenance but also for the increased security in case of collision. The lower part of the hull is cut in such a way that the chain does not obstruct the placement of the Buoy on a flat surface (deck).