Explain forty-five degree spread rule for driven piles, Civil Engineering

Assignment Help:

Q. Explain Forty-five degree spread rule for driven piles ?

For driven piles the length of piles driven into the ground is generally based on dynamic driving formula such as Hiley's formula. In certain ground (for example chalk) the length of piles driven by adopting pile-driving formulas can be far more than adequate since the soil strength may increase with time. In contrast, in silty soils phenomenon of false set can appear and the piles give a false impression of attaining sufficient bearing resistance from the ground. Henceforth the pile's capacity must be verified and checked later by loading test. 

In case driven piles are founded on different depths below ground, 45-degree spread rule is generally applied to check their load carrying capacities. The base bearing loads of higher driven piles are presumed to spread at 45 degrees from their bases and checking is made if loads from higher piles would influence or get transmitted to deeper ones.


Related Discussions:- Explain forty-five degree spread rule for driven piles

Major differences between sureties and security, Question What are majo...

Question What are major differences between sureties and security ? Answer During construction contracts, if a contractor fails to carry out works, employer would e

NERNST EQUATION, HOW CAN I MAKE ASSIGNMENT ON THIS TOPIC

HOW CAN I MAKE ASSIGNMENT ON THIS TOPIC

Survey, Operation in chain surveying

Operation in chain surveying

Water absorption test for precast concrete pipes, Question What is the ...

Question What is the major purpose of carrying out water absorption test for precast concrete pipes? Answer Cement will mix with additional water than is compulsory t

#title Design a gravity-flow sanitary sewer , i have to Design a gravity-f...

i have to Design a gravity-flow sanitary sewer to serve and i need it to be done asap

Verify the magnification and transmitted force, The exciting force in a con...

The exciting force in a constant force type of excitation was 120 kN. The natural frequency of the machine foundation is 4 Hz. The damping factor is 0.36. Verify the magnificati

Compute the skin friction resistance, A 30 cm diameter pile penetrates a de...

A 30 cm diameter pile penetrates a deposit of soft clay 9 m deep and rests on sand. Compute the skin friction resistance. The clay has unit cohesion of 0.6 kg/cm 2 . Suppose

Increasing concrete cover beyond contractual, Question If contractor sugges...

Question If contractor suggests increasing concrete cover beyond contractual such as 40mm to 70mm shall engineers accept suggestion? Answer In contractual part, based on requir

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd