1. A twelve-story condominium is planned for construction on the Gulf Coast. The foundation for the building is to be friction piles (no end bearing). A prestressed concrete fabrication facility is within 30 miles of the project (i.e. use square prestressed concrete piles). If the bottom floor interior column loads are 500 tons and pile groups are not to exceed eight, determine the cross- sectional dimensions and length of piles required to support the interior column loads using a factor of safety of 3. Assume the piles have a center-to-center spacing such that the group efficiency is 1.0. (i.e. disregard whether or not the pile group acts as a block). NO cross-sectional dimension should exceed 24 inches. The piles are fully embedded in sand for which y = 118 lb/ft’, '= 32° and &' = 0.75¢* You need to fill in your answers in the table below. Include applicable units. Do not work the problem on this page. Type of pile to be used (i.e. material) Allowable load for pile group based on problem statement Number of piles you have selected to be used for each interior column

1. A twelve-story condominium is planned for construction on the Gulf Coast. The foundation for the building is to be friction piles (no end bearing). A prestressed concrete fabrication facility is within 30 miles of the project (i.e. use square prestressed concrete piles). If the bottom floor interior column loads are 500 tons and pile groups are not to exceed eight, determine the cross- sectional dimensions and length of piles required to support the interior column loads using a factor of safety of 3. Assume the piles have a center-to-center spacing such that the group efficiency is 1.0. (i.e. disregard whether or not the pile group acts as a block). NO cross-sectional dimension should exceed 24 inches. The piles are fully embedded in sand for which y = 118 lb/ft’, '= 32° and &' = 0.75¢* You need to fill in your answers in the table below. Include applicable units. Do not work the problem on this page. Type of pile to be used (i.e. material) Allowable load for pile group based on problem statement Number of piles you have selected to be used for each interior column

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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Concept explainers

Layout and Design

The layout is the process of marking all the building components on the land from the prepared plan. The layout of construction includes transferring the whole plan of foundations, boundaries of the structure, centerline of the wall, and all other important structural parts on the ground along with the length and width so that the components of buildings can be excavated properly. Designing is the process of establishing the concept of the building on paper in a properly engineered manner.

Question

1. A twelve-story condominium is planned for construction on the Gulf Coast. The foundation for
the building is to be friction piles (no end bearing). A prestressed concrete fabrication facility is
within 30 miles of the project (i.e. use square prestressed concrete piles). If the bottom floor
interior column loads are 500 tons and pile groups are not to exceed eight, determine the cross-
sectional dimensions and length of piles required to support the interior column loads using a factor
of safety of 3. Assume the piles have a center-to-center spacing such that the group efficiency is
1.0. (i.e. disregard whether or not the pile group acts as a block). NO cross-sectional dimension
should exceed 24 inches.
The piles are fully embedded in sand for which y = 118 lb/ft°, ø'= 32° and &' = 0.75ø'
You need to fill in your answers in the table below. Include applicable units. Do not work the
problem on this page.
Type of pile to be used (i.e. material)
Allowable load for pile group based on problem statement
Number of piles you have selected to be used for each interior column
Allowable load for individual pile based on the number of piles selected
Cross-section dimension of each pile in the group – DO NOT EXCEED
24 INCHES. (all pile should have the same dimensions)
Length of an individual pile (all pile should have the same length)
Ultimate load required for individual pile (Factor of Safety applied to
allowable load indicated in problem statement)
Calculated ultimate load for individual pile based on the design
dimensions selected
Calculated allowable load for individual pile based on the design
dimensions selected
Total length of pile needed to support calculated allowable load
Total allowable load for pile group

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