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sorry to follow up, what I do know is that I believe cold formed is more expensive (maybe irrelevant if contractor owns supply), and the interlock strenghts may be limited. Again....thanks in advance.

Contractor is proposing to use cold formed piles in lieu of hot rolled piling that was specified. THis is for a combination bulkhead wall. Looking for general pro's and con's between the two types. My familiarity is soley with hot rolled piling. THanks in Advance, Adam

I have a bulkhead and sheetpile enclosure (as part of dredging) that I am designing on the Hudson River. What are the recomended manuals for designing for ice loading (jamming and impact)? Thanks in Advance, Adam

has anyone used duckbill anchors to support temporary excavations? any opinions would be appreciated.

oohhh. I forgot, we used "rock teeth" in once instance. These are fabricated to the bottom of the piles and help with obstructions and rock. That was a very stiff sheet, impact hammer and rock with poor RQD though.

I have used rock pins like PEInc suggested. usually you attach a sleeve to the pile before driving, clean out sleeve then drill into rock, place your pins and grout into place. If you fix your toes in the design, it should give you the shear force at the bottom you need to design the pins...

I have 94' long W36x150 soldier piles going in as part of a bulkhead. what im wondering is the maximum length these can be installed without splicing....and how much does splicing reduce intallation production (e.g. 25% reduction). These piles are going to be installed from a barge and this is...

Does anyone have a good design reference for rock pins used for shear support at the toe of a sheetpile wall which cannot develop enough embedment resistance due to shallow bedrock? Thanks in Advance, Adam

How are you proposing putting deadman in? If your retaining a slope that is on the verge of failure, won't you need to perform excavation on the slope to install deadman sheets? I would think tiebacks are your best bet....maybe im not understanding completely though.

THanks for the input...I also have said numerous times that there is so many variables that the on-site engineer with the driller would make a field call as to refusal.....ive never had to define it in a workplan.

Is there a standard for definition of auger refusal on rock when drilling? I have language in a workplan that states soil stabilization will occur to bedrock (known elevation) or auger refusal....the state came back wanting to define auger refusal. I seem to recall 6 inches in 15 minutes from...

I just finished a Articulated Concrete Block design for protection dwostream of a water control structure. All the design guidances I have seen (as well as technical guidance from Submar) treat the blocks individually, not as a cabled system. If you provide an email address I can forward a...

any of them? or just the auto-locate? Is there any particular reasoning?

Does anyone have any thoughts on the slip-surface auto-locate function on SLope/W? Im wondering what the advantages are rather than a grid and radius solution. Thanks in Advance, AChwalibog

Can anyone reference me to a good design manual for Reaction sheeting with deadman anchors? Thanks in Advance.

can rip-rap/river rock be tested using ASTM D422. THe soil has up to 9" rock. I wouldnt think you can run a sieve on this material, but if not how do they determine the gradation?

Typically, in the US anyways: Type I/IA are general purpose cements suitable for all uses where the special properties of other types are not required, where Type II cements contain no more than 8% tricalcium aluminate (C3A) for moderate sulfate resistance. Like advised above, check the ACI or...

Thank you all! these responses have helped validate our design teams thoughts and concerns and made me more confident that our initial braced design was indeed the best approach.

I agree....all the client sees is the cost savings of using cantilevered system brought up by the peer reviewer, and cant understand the risks involved. I am likely to say either the peer reviewer can stamp a cantilevered design, or we can go with the current braced design. Thanks for all the...

well there is a shallow water table and the dig is going to approximately 20'....so perimeter sheeting is being used for dewatering purposes and also the client is concerned to cut back slopes due to the potential for uncovering additional contaminants that they arent currently required to...