B=  Number of birds on farm  =  ________________________

W1= Market weight of bird  =  ________________________ lbs
M=  Anticipated peak daily mortality rate for flock near maturity,
      as decimal (e.g., .05 percent = .0005)

      Poultry             Market     Flock  Average Mortality Rate  Peak Daily
      Type                Weight      Life   during flock            Mortality
                           (lbs)     (days)     cycle,%    daily,%    Rate,%
      ------------------------------------------------------------------------
      Layer, hen            4.0        441        14        .033        .05
           , pullet         2.8        140         5        .033        .05
      Broiler               4.5         45         5        .10         .15
         breeder pullet     4.3        140         5        .033        .05
         breeder hen        7.0        301        11        .033        .05
         breeder male      10.0        301        22        .073        .11
         roaster            8.0         80         8        .10         .15
      Turkey, hen          16.0         98         6        .066        .10
            , light tom    22.0        112         9        .08         .12
            , heavy tom    30.0        133        12        .10         .15
      ------------------------------------------------------------------------

W2=  Weight of daily loss near end of flock cycle (@ maturity), lbs
  =  B  x  W1  x  M

  =  ___________x___________x___________=___________lbs/day
Allow 1 cubic foot primary composter volume per pound bird mortality weight.
Allow 1 cubic foot secondary composter volume per cubic foot primary
volume.

Vp=  Primary volume  =  1  x  W2

  =  1  x  ____________    =    ____________  cubic feet

Number of composter bins:
         h=  height of bin ( 5 ft )
         d=  depth of bin ( 5-6 ft )
         w=  width (front) of bin ( 6-10 ft )
               * front of bin must be wide enough to accomodate loader
        Vb=  Individual bin volume  =  h  x  d  x  w

          =  ______ft x______ft  x______ft  =__________ cubic feet

     Primary=   Vp / Vb    = __________ / __________ = ____________

             Round to nearest whole number(mininum of 2) = ____________

     = primary number =____________