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Thanks for the reply, the splice is to extend the pile (under power lines, so the maximum length is limited). Good to know that a single V-groove could work, I'll check with our welding engineer, but GTAW will not be an option in the field, only SMAW.

Hello guys, We need to do a splice on a steel pipe pile, usually we do a full penetration groove weld with a backing plate, but since the pile is drilled, we cannot have anything inside the pile (otherwise the hammer could be stuck on the backing plate), and gouging is not an option either...

Thanks a lot guys, I usually roam more in the earth retention and foundation forum, but you guys are awesome!

Hello, I need some help figuring out something. I need to calculate the section modulus for a made up section, namely a circular HSS of 16''x0.500'' with a W10x39 inside (centered), and filled with 5 ksi concrete. I need this for a soldier pile and lagging temporary retaining wall. I think I...

Hi, That would be, in my opinion, the decision of the designer of the anchor. for ground anchor, it could be acceptable since the ''ground-to-grout'' friction could still be smaller than the ''grout-to-steel''. And let's say that the test gives you good results, I would ask for testing on all...

Exactly!

Hi, I usually consider the compressive resistance of the pile based on effective stress calculation (Beta method), and used more or less 75% of the capacity that is available in pullout (it can be up to 100% in clay, and between 50 to 80% in cohesionless material). for more info on the...

Thank you very much SlideRuleEra, Your input on my problem is extremely helpful!

Hello, We made an pullout test (ASTM D3689)on a driven pile with success. The criteria used for the acceptance of the pile is the elastic lengthening + 5mm. I calculated the elastic lengthening with PL/AE, but the bridge engineer says that the elastic lengthening should take into account the...

Hello, I'd like to hear your opinion on the effect of frost on a sheet pile wall (internaly braced) in saturated clay. Should the soil pressure be multiplied by a factor (like 50%)? Any of you have experiences of such case that you could share? Thank you very much, Jonathan

Hello, I have a project where sheet pile are used for a 12m deep excavation in clay (9m wide, 150m long). The sheet pile are driven 2m in a underlying layer of Till to overcome basal stability problems, but I have to demonstrate the factor of safety for the basal stability. The only method I...

Thanks a lot for all those precious input. I raised a flag for their concrete ''plug'' thickness, and now they are unsure of it. If the project goes through with the thickness I will ask, then I will use the concrete as either a bracing or a ''soil'' with a big kp as passive resistance. I...

Hello PEinc, Thanks for the heads up, but that part (efficiency of the plug) was allready take cared of by the geotechnical/structural team and was part of the design of the bridge. My pat is only the temporary shoring needed for the construction of the pier! My calculation so far, if I...

Hello, I'm designing a cofferdam in sheet pile that will be used to buid a pier directly on rock. Prior to the shoring, the pier willbe backfilled with coarse material (0 - 6''), then the sheet piles will be placed. I The cofferdam is 5 meter deep, and since it sits directly on rock, the...