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  1. Dozerman56

    FAA Gradation Requirements after compaction of P-209

    How many samples were taken for after compaction testing? Did they all fail? Were there hardness specifications for this material? If so, was testing done before placement? Was the source of the material on any kind of pre-approved list the owner may have? Did the supplier's proposal state...
  2. Dozerman56

    Grading and excavation civil drawings

    Nunley: I'm with BeeJ. Anyone that passed 7th grade math can do an earthwork takeoff. It's a question of methodology and tolerance. I use Agtek now, but 30 years ago I used a mylar sheet with a 1" grid on it. Lay it over your grading plan, mark some reference points. Go to the center of each...
  3. Dozerman56

    Temp. shoring and compaction

    Can you build your fill in lifts reinforced with geotextiles? They'd be part of your permanent embankment, but you wouldn't have to try to yank out sheet pile, or leave piles/lagging in place
  4. Dozerman56

    Definition of perched water

    Thanks emm, I think that'll help.
  5. Dozerman56

    Definition of perched water

    Thanks CVG, I think that's helpful. M2, there's room for one wiseguy here and I'm it.
  6. Dozerman56

    Definition of perched water

    "Perched waters are not limited in lateral extent & can be recharged, maybe continually recharged" So there's no real difference beteen 'perched water' and 'ground water'? Thank you
  7. Dozerman56

    Definition of perched water

    Understand, but I'm looking for a 'textbook' definition. Particularly if it addresses extensiveness. Like if I provide a relief trench to an area that has some topographic relief and a year later it's still draining, is this beyond the meaning of 'perched water'? Thank you
  8. Dozerman56

    roadway over Landfill

    I don't know about over trash but I've seen a layer of geogrid and a foot or two of crusher run heal some really miserable earth.
  9. Dozerman56

    Definition of perched water

    Gentlemen: I'm looking for a textbook definition of 'perched water'. Any help out there? Thanks in advance
  10. Dozerman56

    Land Shaping

    My guess is that comparing 'land shaping' to 'grading' is about like comparing a hair stylist to a barber.
  11. Dozerman56

    WHO OWNS EXCAVATED MATERIAL?

    I'm with Dick, how much contaminated water does the city plan on generating?
  12. Dozerman56

    Soil stabilization

    Are there better solutions? Yes. My first suggestion would be to tell them to go home. Otherwise, anything you do will kill the grass and probably make a mess. You might check into putting down a layer of light weight non woven fabric. Staple it down.
  13. Dozerman56

    Old concrete culvert load capacity

    I'm with cvg. Bring in enough road base/well graded gravel to put 2' cover over it and you're most likely fine.
  14. Dozerman56

    Concrete Foundation - Earthwork takeoff

    Normally there's a capillary barrier of clean stone under a slab on grade, check your structural and architectural drawings. I'd be surprised if there's supposed to be anything under the footings unles you get into an unsuitable soil condition, but again check your structural details and notes.
  15. Dozerman56

    Rock Excavation Info Needed

    If you've got a geotechnical report and a grading plan I'm sure you can get a local heavy/highway contractor to give you pricing.If the abutting properties are developed,any information available would be handy. Different areas have different requirements regarding proximity of blasting to...
  16. Dozerman56

    Pavement structure

    Feel free to tell your client to pave on top of the bedrock. They'll be reworking it in 3-5 years. Put some gravel on top of the rock, if it causes grading issues, remove some rock.
  17. Dozerman56

    Site grading minimum slope adjacent to building foundation

    I'll wager it's done to ensure the area around the building drains away from the building rather than to it. Many times here in NC if something doesn't meet local standards they'll accept it if a PE will sign off on the variation. But I'd doubt that's the case in CA.
  18. Dozerman56

    Waterproof connection between concrete riser and pipe?

    Specify either a rubber boot or N -lock gasket. Then pack the joint with hydraulic cement.
  19. Dozerman56

    Backfill in sub-zero Temprature

    I'd suggest insulated blankets for keeping the surface from freezing. You need to be mining the backfill material as you place it, digging it from deep enough that the frost hasn't penetrated it. If you're getting it from a commercial quarry, you have to get them to work with you to provide...
  20. Dozerman56

    Waterproofing

    If it was my project I'd put the outfall structure in and get the permanent ditch in. I'd hate to go to the time and expense of putting in an impervious curtain only to find the water was coming from somewhere else. But if there's a real reason that can't be done, I'll go with Ron and say cut in...

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