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

Keywords of airport management, Keywords of Airport management: Air T...

Keywords of Airport management: Air Traffic Control: A system by which air routes, flight rules for flying aircraft and navigational facilities are provided in an airport.

Calculate the diameter of the stockpile, 1. On a 5-acre level terrain build...

1. On a 5-acre level terrain building site, an earthwork contractor has instructed her crew to strip and grub the topsoil of a 60,000-ft 2 proposed building pad to a minus 2-ft su

Foundation, Explain briefly shallow foundation?

Explain briefly shallow foundation?

Properties of matter, Properties of Matter: Due to surface tension,...

Properties of Matter: Due to surface tension, the free surface of a liquid behaves like a stretched elastic membrane tending to contract so as to have minimum surface area.

Define the coefficient of permeability - hydraulic system, Define the Coeff...

Define the Coefficient of Permeability: (K) A measurement of the ability of the soil or an aquifer for the movement of water through it. Also termed "hydraulic conductivity", C

Geofabric strengthening of perth soils, I need technical assistance. The pr...

I need technical assistance. The project is incomplete. I need someone to proofread it. Do you have someone who know Plaxis, Slope/W and Flac?. Can you arrange a case study for Geo

Engineering mechanics, Characteristics of couple #Minimum 150 words accepte...

Characteristics of couple #Minimum 150 words accepted#

Enumerate about the bonded member, Enumerate about the Bonded Member It...

Enumerate about the Bonded Member It is a concrete member in which tendons are bonded to the concrete. They may be directly bonded to the concrete as in the case of pre-tension

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