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  1. Chewi00

    cold vs. hot rolled piling

    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
  2. Chewi00

    ice loading

    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
  3. Chewi00

    Duck-billed anchors

    has anyone used duckbill anchors to support temporary excavations? any opinions would be appreciated.
  4. Chewi00

    Soldier pile installation question

    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...
  5. Chewi00

    Sheetpile Rock Pin design

    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
  6. Chewi00

    auger refusal standard

    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...
  7. Chewi00

    Slope/W 2007 question

    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
  8. Chewi00

    Deadman and Reaction Sheeting

    Can anyone reference me to a good design manual for Reaction sheeting with deadman anchors? Thanks in Advance.
  9. Chewi00

    Gradation testing of river rock

    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?
  10. Chewi00

    Heavy Section vs. Bracing

    Is there an advantage to using a standard sheetpile (e.g. AZ-18) with a moderate section modulus and have to use interior bracing, rather than specifying a pile with a section modulus of 75-80 in^3 in order to achieve a cantilevered dig? I see a lot of designs that could be modified to get away...
  11. Chewi00

    Seismic Coefficient for SLope/W

    Is the seismic coefficient input for Slope/W the same as the yield acceleration? Thanks in Advance
  12. Chewi00

    soil springs for sheetpile wall

    Does anyone have a good design refeence for determining k values for active and passive soil springs used in the beam-on-elastic foundation method of analyis? Thanks in Advance
  13. Chewi00

    Standard vs. Modified Proctor for Crushed Concrete

    I have two questions relating to testing crushed concrete as a backfill material. I recieved some results an environmental engineer had performed and noticed some problems. 1) The crushed concrete contains more than 30% greater than 3/4" (52%) and therefore, can I consider the standard proctor...
  14. Chewi00

    Toe-Pin Design

    Does anyone know of a good design guide for designing toe-pins into bedrock for sheetpile excavation support where bedrock is limiting the embedment depth? Thanks in Advance
  15. Chewi00

    Seismic SLope Stability MCE vs. MPE

    Can anyone provide any guidance on design procedure differences between a Maximum Credible Earthquake and Maximum Probable Earthquake. The california reg's distinguish the 2, but provide no design guidance for either as far as I can tell.
  16. Chewi00

    Slope Stability - Saturated Sediments

    I have a slope stability issue I was hoping someone could provide some insight for. We are excavating river sediment (medium to high plasticity silt and clays with good amounts of organics). I am determining the properties these sediments would have placed in a landfill without much dewatering...
  17. Chewi00

    Loading on temporary CMP culvert with crushed stone cover

    I am looking for a design guide to determine the suitability and minimum stone cover required for a temporary river crossing where CMP culverts are to be used with 1" crushed stone (for the crossing) cover to support a 90 ton truck load. This temporary crossing would be in use approximately 1...
  18. Chewi00

    rip rap scour protection design

    I am looking for a design guide for rip-rap placement downstream of a vertical drop water control structure. I am looking for a design including stone sizing and length and width of the apron to prevent erosion of the river bed. The site is a 70' wide river which will flow over this submerged...
  19. Chewi00

    Sheet Pile Wall - Aesthetic Facing Options

    I have a cantilevered sheetpile wall along a fresh-water inland river. The client has asked if there are any aesthetically pleasing facing options to improve the look along the river in conjunction with a park that is being proposed. What are my options here? The only thing I have come up...
  20. Chewi00

    Sheetpile Compatibility - Design Life

    Does anybody know of any literature relating soil and groundwater contaminants to sheetpile design life (i.e. corrosion). I have read various articles relating soil ph to design life, but do not know the ph values of the soil at this particular site. Short of going out and taking soil samples...

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