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...
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...
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
"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
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
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.
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.
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...
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.
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.
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...
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...
