7- The sections were left in the molds for approximately two days. Room 

 temperature was about 65 to 70 F. 



The very short workir^ time for the Flexane 80 putty made spreading the material out and 

 building up the layer difficult. One has to work very rapidly or he will lose the entire 

 batch within 15 minutes. 



TTie two bolted concepts, called the second and third fastening concepts, were based or. 

 discussions with marina owners about methods being currently used to connect chain and 

 conveyor belts to the anchor and to the buoys on boat moorings. These two concepts are 

 shown in figures 3 and 4. The bolts were 1" diameter by 2i" long steel bolts with oversize 

 washers on each side. The bolts were torqued down until the conveyor belt just started to 

 protrude above the washer surface. 



The second concept used the first concept geometry. The object was to compare the first 

 and second techniques to see which was stroi^er. 



The third concept would be the simplest to fabricate in the field. The belt is simply 

 looped over onto itself and bolted. Also, a comparison could be made between the two 

 bolting techniques to see which was stronger. 



In order to determine whether the material by itself had any load-carrying capacity at aU 

 once the carcass had been cut or drilled through, a fourth concept was tried. It is shown 

 in Figure 5. Shackles were placed through the 3/8" drilled holes and no other preparation 

 was /done. Since the water would now be able to quickly penetrate the inner carcass, a 

 measure of how quickly the water deteriorates the fibers could also be obtained. 



The first three fastening concepts have one thing in common - they require the belt to be 

 looped around a steel shackle or ring at both ends of the mooring. An attachment method 



22 



