Pile driving is the civil engineering method of installing a pile, a long structural column of timber, steel or concrete, into the ground to transfer the load of a building or other structure down to stronger soil or rock layers, typically by repeatedly striking the pile's top with a heavy weight or hydraulic hammer until it reaches the required depth or resistance. It is used wherever surface soil is too weak or unstable to support a foundation directly, such as in soft or waterlogged ground, and it underlies the foundations of structures ranging from bridges and piers to high-rise buildings.
Facts
Disputed
Origin YearNamed inventors are all far later (a 1475 drawing by Francesco di Giorgio Martini; steam pile drivers credited to John Rennie in 1801 and James Nasmyth in 1845), but archaeological evidence places a comparable device at Scottish crannog sites roughly 5000 years ago; no single point of origin is established. Core PrincipleThe most common form of pile driver raises a heavy weight between vertical guides positioned above a pile, then releases it at the top of its travel so the falling weight impacts the pile and drives it into the ground; hydraulic, diesel, steam, vibratory or press-in equipment substitutes a machine-driven force for the falling weight where impact noise or ground vibration must be limited. 1 FAQs
Why are hydraulic hammers preferred over older pile driving hammers?
They generate less noise and fewer pollutants than older hammers.
Hydraulic hammers are considered more environmentally acceptable than older, less efficient hammers because they generate less noise and fewer pollutants.
Connections
Sources
1. Pile Driver (Wikipedia)
Wikipedia contributors, Wikimedia FoundationOverview section
The most common form of pile driver uses a heavy weight situated between vertical guides placed above a pile.
History section
there is evidence that a comparable device was used in the construction of Crannogs at Oakbank and Loch Tay in Scotland as early as 5000 years ago
In Group: Tunnelling, Foundation and Concrete Construction Methods, Lead paragraph
A pile driver is a heavy-duty tool used to drive piles into soil
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