A five-story steel-frame office building with a 100 ft x200 ft footprint is to be builton a site underlain by clays and silts. These soils are fairly uniform and probablyhave fair engineering properties. The building will have one 20-ft deep basementand will probably be supported on either a mat foundation located 5 ft below thebottom of the basement, or a deep foundation extending about 60 ft below thebottom of the basement. The groundwater table is believed to be about 15 ft belowthe ground surface and bedrock is about 85 t below the ground surface. There areaccessibility problems at this site with trees and steep terrain.(a) How many exploratory borings will be required as per NYC Code, and towhat depths should they be drilled (for both shallow and deep foundationsehemes?)(b) How would you plan to measure the water level?(e) What types of drilling and sampling equipment would you recommend forthis site?(d) What types of soil laboratory tests would you assign?

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on a site underlaia by clays and silts. These soils are fairly uniform and probably have fair engineering properties. The building will have one 20-t deep basement and will probably be supported oa either a mat foundation located 5 a below the bottom of the basement, or a deep foundation extending about 60 t below the bottom of the basement. The groundwater table is believed to be about 15 t below the ground surface aad bedrock is about 8s a below the ground surface. There are accessibility problems at this site with trees and steep terrain. (a) How many exploratory borings will be required as per NYC Code, and to what depths should they be drilled (for both shallow and deep foundation sebemes?) (b) How would you plan to measure the water level? (c) What types of drilling and sampling equipment would you recommend for this site? (d) What types of soil laboratory tests would you assigu?

on a site underlaia by clays and silts. These soils are fairly uniform and probably have fair engineering properties. The building will have one 20-t deep basement and will probably be supported oa either a mat foundation located 5 a below the bottom of the basement, or a deep foundation extending about 60 t below the bottom of the basement. The groundwater table is believed to be about 15 t below the ground surface aad bedrock is about 8s a below the ground surface. There are accessibility problems at this site with trees and steep terrain. (a) How many exploratory borings will be required as per NYC Code, and to what depths should they be drilled (for both shallow and deep foundation sebemes?) (b) How would you plan to measure the water level? (c) What types of drilling and sampling equipment would you recommend for this site? (d) What types of soil laboratory tests would you assigu?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A twenty-story hospital building with a 400 ft x 200 ft footprint is to be built on a site underlain by fill over glacial sands. The building will have a 25-ft deep basement and will probably be supported on either a mat foundation located 5 ft below the bottom of the basement, or a deep foundation extending about 100 ft below the bottom of the basement. The groundwater table is about 30 ft below the ground surface and bedrock is about 120 ft below the ground surface. There are no accessibility problems at this site. (a) How many exploratory borings will be required as per NYC Code, and to what depths should they be drilled? (b) How would you obtain groundwater data? Explain your answer.