

1 . Large weight 



2. Bulky 



3. Difficult to transport and 

 lower to seafloor 



1. Requires site preparation 



2. Requires high grout bond 

 qual i ty 



3. Difficult to transport and 

 lower to seafloor 



4. Requires near-flat, 

 rock seafloor 



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 ■a: ^i 



1. Complex installation, re- 

 quires development of sea- 

 floor drilling machine 



2. Requires increased on-site 

 construction time 



3. High cost 



1. Comp]ex installation, re- 

 quires development of sea- 

 floor drilling machine 



2. Requires increased on-site 

 construction time 



3. Requires development of sea- 

 floor tendon tensioning 

 equipment 



4. High cost 



1. Limited application 



2. Line abrasion likely 



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Pre-stressed steel wire 

 tendons (drilled, tensioned, 

 grouted) 



Requires 169 0.06-m diam 

 equivalent, 20 m long 

 steel tendons In drilled 

 holes (0.12 m x 20 m) 



1 



116 



