In spite o£ the advanced construction techniques discussed, the 

 inherent problems in deepwater seaport construction will lead to new 

 construction methods and techniques. However, the development of new 

 techniques is most likely during the actual construction when experi- 

 mentation can be performed. 



At this stage of the planning, known methods, adapted and modified 

 to the particular needs of this project, are best considered. Planning 

 based on established techniques however, should tend to keep any construc- 

 tion schedule and cost estimate on the conservative side. 



A construction schedule, including implementation studies, preliminary 

 and final engineering, land acquisition, construction contracts and the 

 final construction, is presented in Table 1. 



IV. CONSTRUCTION COSTS 



1. Comments and Assumptions . 



The construction cost of a structure such as the proposed offshore 

 breakwater-oil storage system depends on many variables, and includes 

 the following: 



(a) Breakwater site. Geographical location and sea, weather 

 and bottom conditions at the site. 



(b) Precasting and outfitting sites. Cost of building 

 facilities versus possibility of adapting established sites to 

 needs; location relative to each other and to breakwater site. 



(c) Design criteria. Particularly for material 

 specifications. 



(d) Cost of materials and labor. Comparative costs at 

 various possible locations of all sites. 



(e) Construction methods. 



To prepare a basic estimate, certain assumptions were made. Once a 

 basic estimate was completed, alternates were worked out to include 

 variations required for the specific conditions under consideration. 



Assumptions for the basic estimate according to the above- listed 

 variables are: 



a. Breakwater Site . The proposed breakwater site was assumed to be 

 off Long Branch, New Jersey, at a distance required to provide the indi- 

 cated water depth without dredging. The exact location would be chosen 



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