A variety of tools can be used to acquire these data. They include 

 corers, grab samplers, sub-bottom profilers, dynamic penetrometers, 

 static cone penetrometers, in-situ vane shear devices, and drilling. 

 Record data are another means for gathering site data. 



2.2 RECOMMENDED SITE SURVEY 



The type of site survey that can be conducted to gather the 

 required data is primarily a function of time and money. For some 

 projects perhaps a full suite of data can be gathered, while for other 

 projects a review of record data is all that is possible. The recom- 

 mended surveys hopefully strike a balance between these two extremes. 



2.2.1 Deep Water 



Record data should be searched to determine as much as possible 

 about the site or surrounding area. The site evaluation should be 

 performed sufficiently close to the expected anchor installation location 

 to provide reliable information and samples of the soils to be encoun- 

 tered. Table 2-2 gives approximate survey depth requirements for each 

 of the four CEL propellant- embedded anchors for several general soil 

 types . 



Table 2-2. Approximate Survey Depth Requirements 

 for CEL Propellant-Embedded Anchors 



Soil Type 



Survey Depth, m (ft) for — 



10K . 

 Anchor 



20K 

 Anchor 



100K 

 Anchor 



300K 

 Anchor 



Soft clay 

 Medium clay 

 Loose sand 

 Dense sand 



9 (30) 

 6 (20) 

 5 (15) 

 3 (10) 



12 (40) 

 9 (30) 

 6 (20) 

 5 (15) 



15 (50) 



12 (40) 



8 (25) 



6 (20) 



20 (65) 



15 (50) 



9 (30) 



8 (25) 



15 



