SITE SURVEY 



This section lists required site data for designing plate anchors 

 and presents recommended site surveys, gives typical properties to be 

 used when site surveys are limited or cannot be conducted, and lists 

 hazardous/unusual conditions that create additional problems for the 

 designer . 



2.1 SITE-SURVEY REQUIREMENTS 



Data requirements differ according to the type of analysis and soil 

 expected. A matrix of site data and analysis types is given in 

 Table 2-1. To use Table 2-1, find the analysis type column and look 

 down that column for the soil type (1 indicating cohesive soil, and 2 

 indicating cohesionless soil). Each time the proper soil type is encoun- 

 tered, look to the left-hand column to find the soil data requirement. 

 For example, short-term static loading in a cohesionless soil requires 

 data on the friction angle (<(>), density, and grain size distribution. In 

 general, the variation of the properties with depth is required. Brief 

 comments about the data requirements are as follows : 



(a) Soil Strength - For cohesive soils the undrained shear 

 strength, sensitivity, and the drained friction angle should 

 be known. For cohesionless soils the friction angle is 

 required . 



(b) Soil Density - Required for both cohesive and cohesionless 

 soils. For cohesionless soils, a descriptive relative density 

 (loose, medium dense, dense) is required for liquef action 

 analysis . 



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