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Utilizing Perc Rates for BMP Design
When an in-situ permeability rate is required for the design of a BMP, can the in-situ perc rate be utilized instead? The apparatus described in the in-situ perm test maintains a constant head. The procedure for the septic drain field perc test (that we would utilize instead) does not. Are the...- kevgeotech
- Thread
- Replies: 3
- Forum: Earthwork/grading engineering
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Artificial Fill
Why would you want to assume fill placed under unknown conditions is anything but unsatisfactory. It is simple enought to perform a series of borings (hand auger or with a drill rig), obtain Shelby tube samples from various depth(s), run a Proctor on the cuttings of the borings and calcuated the...- kevgeotech
- Post #3
- Forum: Geotechnical engineering general discussion
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Calgon as a Dispersing Agent
In the past I have always made my despersing agent using 40 g of sodium hexametaphosphate per liter of distilled water as stated in ASTM D422. I have recently started working for a company that uses Calgon as the dispesing agent. I know that hexamataphosphate is the active ingredient in Calgon...- kevgeotech
- Thread
- Replies: 9
- Forum: Soil testing engineering
