Please answer 11.11 11.11 A steel pile (H-section; HP 360 × 152; see Table 11.1) is driven into a layer ofsandstone. The length of the pile is 18.9 m. Following are the properties of thesandstone: unconfined compression strength = qmdab) = 78.7 MN/m² and angle offriction = 36°. Using a factor of safety of 3, estimate the allowable point load thatcan be carried by the pile. Use [qu(design) = qu(lab)/5]. Table 11.1 Common H-Pile Sections used in the United StatesMoment ofinertiaDesignation,size (mm) xweight (kg/m)Flange and webthickness w(m* x 10-6)Depth d,(mm)Flange width d(mm)Section area(m? x 10-9)(mm)49.4123НР 200 х 532046.8411.320716.8НР 250 х 85X 62НР 310 х 125x 110x 93x 79НР 330 х 149x 129x 109x 89НР 360 х 174x 152X 132x 10825410.814.4260422468.010.625687.52431215.917.53122718930814.115.4931023777.530311.913.130819763.729910.011.0530616462.933419.019.4533537012332916.516.933331410432413.914.53302638631911.311.73282106936122.220.4537850818435619.417.9137643715816.813637337135115.6237434613.812.82303109---X

qud=qulab5qud=78.7MN·m-25=15.74MN·m-2Nϕ=tan245+ϕ2=tan245+362=3.852

1 A steel pile (H-section; HP 360 x 152; see Table 11.1) is driven into a layer of sandstone. The length of the pile is 18.9 m. Following are the properties of the sandstone: unconfined compression strength = qulab) = 78.7 MN/m² and angle of friction = 36°. Using a factor of safety of 3, estimate the allowable point load that can be carried by the pile. Use [qu(design) = qu(lab)/5].

1 A steel pile (H-section; HP 360 x 152; see Table 11.1) is driven into a layer of sandstone. The length of the pile is 18.9 m. Following are the properties of the sandstone: unconfined compression strength = qulab) = 78.7 MN/m² and angle of friction = 36°. Using a factor of safety of 3, estimate the allowable point load that can be carried by the pile. Use [qu(design) = qu(lab)/5].

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter18: Pile Foundation

Section: Chapter Questions

Problem 18.14P: A steel pile (H-section; HP 360 1.491; see Table 18.1) is driven into a layer of sandstone The...

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