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iscuss, evaluate and propose a suitable excavation and lateral support system(s) (ELS) for the basement construction.

iscuss, evaluate and propose a suitable excavation and lateral support system(s) (ELS) for the basement construction.

Structural Analysis
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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Discuss, evaluate and propose a suitable excavation and lateral support system(s) (ELS) for the
basement construction.

Project Information Project Information Project A Project B Height of building 25 floors, 78m high, with 2-level 40 floors, 124m high, with 3- Basement (8m deep) level Basement (10m deep) Site Area 750 m? 1000 m? Usage Residential Residential Location Urban area Urban area Surrounding condition Site surrounded by new buildings Site surrounded by new and old buildings Terrain 2 levelled platform 2 levelled platform
Transcribed Image Text:Project Information Project Information Project A Project B Height of building 25 floors, 78m high, with 2-level 40 floors, 124m high, with 3- Basement (8m deep) level Basement (10m deep) Site Area 750 m? 1000 m? Usage Residential Residential Location Urban area Urban area Surrounding condition Site surrounded by new buildings Site surrounded by new and old buildings Terrain 2 levelled platform 2 levelled platform
Summary of Borehole Logs Total core Soil Description Depth Grade recovery % Start Wash boring - no sample 6.5 Medium dense, brown, silty fine to course SAND with a little fine gravel (FILL) N=60 at 18.5 20.3 Medium dense, yellowish brown, slightly clayed silty medium to fine SAND (RESIDUAL SOIL) 28.3 Extremely weak. Light pinkish grey & locally spotted brown, completely decomposed, fine grained |GRANITE, cobbles and occasional boulders of weathered granite. Grade II/IV. N=95 at 35.4 55 V 36.2 Moderately strong, pinkish grey, moderately decomposed, fine grained GRANITE 38.3 85 III Very weak, light pinkish grey & locally spotted brown, |N=150 at 45.40 completely decomposed, fine grained GRANITE (very dense, silty medium to fine sand with a little fine gravel). 60 V/IV N>200 at 50.45 53.2 Weak, light pinkish grey & locally spotted brown, Icompletelv decomposed fine grained GRANITE (very. 70 VI
Transcribed Image Text:Summary of Borehole Logs Total core Soil Description Depth Grade recovery % Start Wash boring - no sample 6.5 Medium dense, brown, silty fine to course SAND with a little fine gravel (FILL) N=60 at 18.5 20.3 Medium dense, yellowish brown, slightly clayed silty medium to fine SAND (RESIDUAL SOIL) 28.3 Extremely weak. Light pinkish grey & locally spotted brown, completely decomposed, fine grained |GRANITE, cobbles and occasional boulders of weathered granite. Grade II/IV. N=95 at 35.4 55 V 36.2 Moderately strong, pinkish grey, moderately decomposed, fine grained GRANITE 38.3 85 III Very weak, light pinkish grey & locally spotted brown, |N=150 at 45.40 completely decomposed, fine grained GRANITE (very dense, silty medium to fine sand with a little fine gravel). 60 V/IV N>200 at 50.45 53.2 Weak, light pinkish grey & locally spotted brown, Icompletelv decomposed fine grained GRANITE (very. 70 VI
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