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1680 Durham Ferry Road, Tracy, CA <br />GROUT CALCULATIONS <br />OS-1 <br />C <br />1 Standard Well I <br />radiusA2 <br />(ft^2) <br />height <br />(ft) <br />, <br />Volume <br /> (ftA3) <br />Actual <br />Grout <br />Used <br />(gals) <br />radius in <br />inches pi <br />radius <br />(ft) <br />Convert <br />ftA3 to <br />gals. <br />Volume <br />(gals) <br />Total <br />Filter <br />pack vol. <br />(gals) <br />Filter <br />pack <br />porosity <br />Effective <br />Filter <br />pack Vol. <br />(gals) <br />Total <br />volume <br />(gals) <br />0.0004 <br />0.0004 <br />6 Casing Blank adjacent to sealing material 0.25 3.1415 0.0208 <br />0.0208 <br />19 0.03 7.48 0.19 0.19 <br />7 Casing Screen & Blank adjacent to filter pack 0.25 3.1415 5 0.01 7.48 0.05 0.05 <br />8 <br />9 <br />10 <br />Borehole Filterpack 4 3.1415 0.3333 0.1111 6 2.09 7.48 15.67 15.61 0.30 4.68 4.68 <br />Borehole Filterpack Below casing 4 3.1415 0.3333 0.1111 1 0.35 7.48 2.61 0.30 0.78 0.78 <br />Borehole Mushroom cap 10 3.1415 0.8333 0.6944 0 0.00 7.48 0.00 - 0.00 <br />11 5.71 <br />12 <br />13 <br />14 <br />15 Casing Blank = Length of Blank Casing Adjacent to seal/grout backfill (do not include 5 'length to be drilled out) <br />16 Casing Screen & Blank = Length of casing adjacent to filterpack <br />17 Borehole Filterpack = Length of borehole annulus filled with filterpack <br />18 Borehole Filterpack Below screen = Length of borehole filled with filterpack on y below the well screen; Usually does not exist in most wells. <br />19 Borehole Mushroom cap = length of borehole above casing cut off filled with grout (typically 1 foot) <br />20 radius in inches = radius of casing or borehole (Not diameter) <br />21 pi = 3.1415 <br />22 radius in feet = Radius in inches/12 <br />23 height = height of borehole or casing in feet <br />24 ft3= cubic feet, pre*h <br />25 Feet to gallon = 7.48, conversion factor <br />26 Volume in gallons = ft3*7.48 <br />27 Total Filter pack volume= Borehole Filterpack volume - cas'ng screen <br />28 filterpack porosity = Assumed porosity of 30% <br />29 Effective Filterpack Volume = Total Filter pack volume '' Filterpack porosity <br />30 Total Volume = Blank Casing + Screen Casing + Effective Filterpack Volume + Mushroom Cap <br />31 User Defined Value 1 i