Name _____________________________________________ Date ________________________ Completion ___________________
1. When soil cannot be excavated, may be driven to support tall buildings.
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2. If building loads and soil conditions do not require a system of piles or caissons, a(n) is usually adequate to support concrete buildings.
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3. Pile-driving equipment has a drop, mechanical, or vibratory , which drives the pile or pile casing into the ground.
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4. piles have a long life expectancy under water.
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5. The three major types of piles are bearing, friction, and .
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6. concrete piles can only be used with ďŹ rm, cohesive soil.
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7. Two types of concrete piles are precast and cast-in-place piles.
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8. caissons provide greater load-bearing area at the bottom of the caisson.
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9. are an effective means to control earth retention where access and right-ofway is limited.
___________________ 10. Piles are placed beneath beams, which support bearing walls. ___________________ 11. piles are the common type of piles used in concrete heavy construction. ___________________ 12. Sheet piles are used primarily to resist pressure. ___________________ 13. for shell-type concrete piles remain in place after the concrete is poured. ___________________ 14. Tubular steel piles are also known as piles. ___________________ 15. A(n) is a machine that converts the kinetic energy of wind into rotating mechanical energy. ___________________ 16. Piles may be grouped and joined together with a concrete . ___________________ 17. piles do not have to penetrate load-bearing soil. ___________________ 18. concrete piles are usually fabricated in a factory. ___________________ 19. piles are often used in the construction of wharves and docks. ___________________ 20. A(n) is a cylindrical or rectangular casing that is placed in the ground and ďŹ lled with concrete. 257
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258 CARPENTRY WORKBOOK
True-False T F 1. Piles are column-like structural members that carry building loads through nonload-bearing soil to lower levels of load-bearing soil. T F 2. Piles may be made of wood, steel, or concrete. T F 3. Friction piles are the most common type of piles used in heavy construction. T F 4. Sheet piles are designed to carry vertical loads. T F 5. Most land-based wind turbine foundations are octagonal in shape and can be up to 35′ wide and 8′ deep at the pedestal. T F 6. Steel piles may be L-shaped or tubular in cross section. T F 7. Mobile cranes with special attachments can be used to drive piles. T F 8. Micropiles are a recent development of conventional piles. T F 9. The main difference between a spread foundation and a T-shaped foundation is the footing size. T F 10. Micropiles can extend to depths of 500′.
Multiple Choice ������������������ 1. A ___ is a steel device placed on the head of a pile to receive the blows from the pile-driving rig and protect the pile while it is being driven. A. pile shoe B. driving head C. pile head D. driving tip ������������������� 2. A ___ is attached to a pile tip to prevent the pile from breaking while it is being driven. A. pile shoe B. driving head C. pile head D. driving tip ������������������ 3. A ___ foundation is a type of foundation that consists of a solid slab of heavily reinforced concrete placed beneath the entire building area. A. T-shaped B. shallow C. matt D. block ������������������ 4. Pile driving rigs can be powered by ___. A. compressed air B. steam C. diesel pistons D. all of the above © 2013 American Technical Publishers, Inc. All rights reserved