What is pile working load?
The load which may be safely applied to a pile after taking into account its ultimate bearing capacity, negative friction, pile spacing, overall bearing capacity of the ground below and allowable settlement.
Pilot piles may be utilised as working piles, subject to the Engineer’s approval..
What is preliminary test pile?
Preliminary pile (for failure load test) : a pile installed before the commencement of the main piling works or specific part of the Works for the purpose of establishing the suitability of the chosen type of pile and for confirming its design, dimension and bearing capacity.
What are the different types of piles?
Types of Pile Foundations Based on Construction MethodDriven Pile Foundations. Driven pile foundations can be made from concrete, steel or timber. … Cast-in-situ Pile Foundations. Cast-in-situ piles are concrete pile. … Driven and Cast-in-situ Piles. Driven and cast-in-situ piles have the advantages of both driven and cast-in-situ piles.
How is pile calculated?
Step 2: compute the ultimate end bearing capacity (acting as individual piles). Ultimate end bearing capacity in clay = Nc × C × pile tip area (Nc = 9). Ultimate end bearing capacity in soft clay = 9 × 120 × π × diameter2/4 = 848.2 lbs/per pile. Total ultimate bearing capacity per pile = 76,920 + 848.2 = 77,768 lbs.
What is the maximum allowable settlement for a pile?
Pile settlement analysis showed that total expected maximum settlement value was 15.6 mm. It includes 2.1 mm settlement of pile deformation from vertical compressive loads. For such structure, foundation settlement should not be more than 2% of pile diameter.