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1680 Durham Ferry Road, Tracy, CA <br />GROUT CALCULATIONS <br />OS-1 <br />A IBICilDI E IFicilm I I J 1 m I L I M I " <br />1 Standard Well <br />pi <br />radius <br />(ft) <br />radiusA2 <br />(fr2) <br />height <br />(ft) , <br />I <br />Volume <br />(f'3) <br />Convert <br />fr3 to <br />gals. <br />Volume <br />(gals) <br />Total <br />Filter <br />pack vol. <br />(gals) <br />Filter <br />pack <br />porosity <br />I -T <br />Actual <br />Grout <br />Used <br />(gals) <br />2 <br />radius in <br />inches <br />Effective <br />Filter <br />pack Vol. <br />(gals) <br />Total <br />volume <br />(gals) 3 <br />4 <br />5 <br />6 Casing Blank adjacent to sealing material 0.25 3.1415 0.0208 0.0004 16 0.02 7.48 0.16 0.16 <br />7 Casing Screen & Blank adjacent to filter pack 0.25 3.1415 0.0208 0.0004 5 0.01 7.48 0.05 0.05 <br />8 Borehole Filterpack 4 3.1415 0.3333 0.1111 5 1.75 7.48 13.05 13.00 0.30 3.90 3.90 <br />9 Borehole Fliterpack Below casing 4 3.1415 0.3333 0.1111 1 0.35 7.48 2.61 0.30 0.78 0.78 <br />10 Borehole Mushroom cap 10 3.1415 0.8333 0.6944 1 2.18 7.48 16.32 16.32 <br />11 <br />12 <br />21.22 <br />13 _ <br />14 <br />(do not include 5 ' length <br />1 <br />15 Casing Blank = Length of Blank Casing Adjacent to seal/grout backfill to be drilled out) <br />16 Casing Screen & Blank = Length of casing adjacent to filterpadc 1- <br />17 Borehole FlIterpack = Length of borehole annulus filled with filte_pack - r <br />18 Borehole Filterpack Below screen = Length of borehole filled with filterpack only 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) 4- 21 <br />22 <br />p1= 3.1415 , <br />radius in feet = Radius in inches/12 ,-- --i- <br />23 height = height of borehole or casing in feet --I <br />24 ft 3= cubic feet. prr211 -+- <br />25 Feet to gallon = 7.48, conversion factor 1 <br />26 Volume in gallons = ft3'1.48 <br />27 Total Filter pack volume = Borehole Filterpack volume - casing screen <br />28 filterpack porosity = Assurnel rositf30% -.1- <br />29 Effective Filterpack Volume = Total Filter pack volume' Filterpack porosity <br />Effective Filterpack Volume <br />, <br />-H <br />30 Total Volume = Blank Casing + Screen Casing + + Mushroom <br />_1 <br />Cap L <br />31 User Defined Value I i