Piles Flashcards
How are piles classified?
On the basis of use or materials
Used primarily to create a rigid barrier for earth and water
Sheet Piles
Used to transmit structural loads
Load bearing piles
Made from tree trunks; available in most sections of the country/world
Timber piles
Types of timber piles
Treated with a preservative or untreated
Types of Concrete Piles
Precast-prestressed, Cast-in-place with shells, and augered cast-in-place
Types of Steel piles
H section and Steel Pipe
Where are H sections useful the most in?
Urban areas or adjacent to structures
How are steel pipes most useful?
Most effective as friction piles
What consists of composite pile?
Concrete and steel OR plastic with steel pipe core
When are composite piles used?
Used due to hard driving conditions and warm marine environments
Classified as a skin friction pile
Steel H Refusal of driving pile in stiff clay
Classified as end-bearing
Steel H driven through a mud deposit to rest on solid rock
Used for intermediate or large projects that help predict costs
Test Piles
What information do test piles provide?
Bearing Capacity and number of blows per foot
Drives pile into ground which establishes criteria
Pile Hammers
Factors to consider when selecting a method for driving piles
Size and weight of pile, driving resistance to overcome the achieved penetration, available space and headroom for equipment, and Noise restrictions
Pivot point at the crane’s boom top and a brace at their bottom that attaches to the crane
Fixed Leads
leads that are not attached at their bottom to the crane or driving platform; leads and hammer usually separate
Swing Leads
Used to support and hold the pile in the proper position during driving; usually constructed from steels beams
Templates
