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A new twist to the original question What if the pre-bore hole are smaller in diameter before the pipe is driven to refusal? Thanks qse

Balla presented an article to the "soil mechanics and foundation Engineering" in 1961 on uplift resistance for transmission line towers. Tests were made in dense sand and "failure surface for shallow footings was approximated circular in elevation and that the tangent to the...

Focht3 What you suggested is very conservative. Anyway, we like to pick your brain, thanks for your input. Cone of uplift varing from 20 to 30 degrees have been used for years by utilities for many of their transmission line towers. Full scale tests have been done, although these are not...

Thanks Focht3, you have confirmed my suspition. QSE

Hi geotech experts I need to estimate uplift capacities of existing steel driven pipe piles in dense till. Piles are 16" in diameter, pre-bored and driven to refusal. SPT for till is 50+ and water is at the surface. Pile reached refusal at about 30 ft and were driven with opened ends...

Help needed. I have seen excel sheets with 1-complete columns/rows locked out. i.e. columns A to H, completely out of screen, and cannot be moved or seen. 2-Imported autocad dwgs frozen, cannot be moved, deleted or modified 3-Selected cells protected In short, cannot do much other than...

Hi Scofie, I beg to differ with your conclusion. Allowable deflection of piles at ground level is related to whatever they are supporting If the piles are supporting 1-Buildings, Telecommunication poles, and pipelines (small allowable deflection) 2-Transmission line poles (larger deflection...

http://www.civiltech.com/ Here is a new software for pile under lateral loads (allpile). I downloaded the demo and found the input and output great. I am not trying to push this product but there so few good ones out there on this topic and I welcome the competition to LPile. The downloaded...

http://www.geocities.com/richgetze/ User frendly beam analysis software. Its free. Hopefully, the developper will add more features in the future

Hi Scofie, The answer depends on the intended use of the monopole. The "acceptable" deflection limit under severe loads on most transmission line pole is about 10% of its height (Suspension typically). I have seen specs with 2.0 deg rotation at ground level for these loads. Poles...

I experienced this peculiar phenomenon a few years back from my house. Repeated violent bangs coming from the roof (typical sloped wood trusses and plywood construction) that woke us from our sleep and it was scary. No damage to the roof. Later that evening, it was on the news, so it was fairly...

You have an interesting problem, here is a suggestion 1-First priority is to stop further corrosion. Apply galvicon with paint brush with the nuts removed, assuming the nuts are not spot welded. (Of course, remove nut on one anchor at a time, and not on a windy day) Other suggestions are...

Grillages can be used for telecom latticed towers when the conditions are right, for instance 1-Develop a standard grillage for a tower type and soil condition. The same grillage can then be used many times, same idea as a standard tower. In the steel business, we try to avoid...

What is the most efficient/economical way to convert old blue prints into autocad? Most of the time blue prints are not to scale. Thanks

To Buns1 (Electrical) From QSE (Structural) The latest ASCE Manual in circulation is ASCE-10-97. As MikeDB suggested, the commitee is working on a revision that will probably be available to the public within a year. However, do not expect drastic changes from the new Manual. In any case the...