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

Define the degree of saturation and soil moisture content, Establish the r...

Establish the relationship among degree of saturation, soil moisture content, definite gravity of soil particles, and void ratio. The volume of an undisturbed clay sample having

N-type semiconductor is an example of what semiconductor, N-type semiconduc...

N-type semiconductor is an example of what semiconductor? Answer : N-type semiconductor is an example of extrinsic semiconductor.

#survey, Ask question #chaining and rangingMinimum 100 words accepted#

Ask question #chaining and rangingMinimum 100 words accepted#

Define the frame column analysis, Define the Frame Column Analysis 1. B...

Define the Frame Column Analysis 1. Based on if a column section is a braced frame or unbraced frame. 2. Braced frame-indicates buckling mode shape does not involve tr

Determine the principle of darcy law, Determine the principle of Darcy's la...

Determine the principle of Darcy's law for laminar flow of water through saturated soil. Illustrate that the coefficient of permeability has the dimension of velocity. The d

Define water jets for underwater inspection of bridge, Define Water jets fo...

Define Water jets for underwater inspection of bridge? These tools are widely used and produce a bright metal finish in one operation. Grit entrainment is available and makes t

Upper floor, We need all types of Upper floor

We need all types of Upper floor

What do you mean by stock verification sheets, Q. What do you mean by Stock...

Q. What do you mean by Stock Verification Sheets? The proper custody and accountal of stores is the prime duty and function of an executive or the stockholder. To ensure this v

Prismatic compass, what is the role of agate cape in prismatic compass?

what is the role of agate cape in prismatic compass?

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