A semiempirical estimate of chute length for a 1000         Current Percent of runners Number of runners Number of runners Runners Runners Chute length  
  runner 5K.         Interval entering chute in entering chute in cumulative processed still in chute    
            Ending current minute Interval          
  The following input is from Mike Early of Charm City Run                      
  According to RRCA queuing data, runners occupy an area         15 0.001 1 1 2 0 0  
  two square feet.         16 0.001 1 2 4 0 0  
  Mike also provided a runner processing rate of         17 0.002 2 4 6 0 0  
   2 runners per minute,and he uses a chute width of 10 feet.       18 0.004 4 8 8 0 0  
  Model Assumptions:         19 0.006 6 13 10 3 1  
  Based on experience, our model assumes a normal distribution,       20 0.009 9 22 12 10 2  
  with a mean at 30 minutes and a standard deviation of 5 minutes,       21 0.013 13 35 14 21 4  
  Each incoming runner adds 2sq ft in the chute, and         22 0.019 19 54 16 38 8  
  we assume a runner processing rate of 2 runners per minute,       23 0.026 26 80 18 62 12  
  Input         24 0.034 34 114 20 94 19  
  Number of runners 1000       25 0.044 44 158 22 136 27  
  Runners processed per minute: 2       26 0.053 53 211 24 187 37  
  Chute Width 10       27 0.062 62 274 26 248 50  
  Results         28 0.070 70 344 28 316 63  
  Early arrivals appear between 14 and 15 minutes, and 683       29 0.076 76 420 30 390 78  
  (approximately 2/3) of the runners enter the chute between 25     683 30 0.079 79 499 32 467 93  
  and 35 minutes. The (required) chute length increases         31 0.079 79 579 34 545 109  
  monotonically until the 42nd minute, reaching a maximum: 187 feet.     32 0.076 76 655 36 619 124  
            33 0.070 70 725 38 687 137  
            34 0.062 62 787 40 747 149  
            35 0.053 53 841 42 799 160  
            36 0.044 44 884 44 840 168  
            37 0.034 34 919 46 873 175  
            38 0.026 26 945 48 897 179  
            39 0.019 19 963 50 913 183  
            40 0.013 13 977 52 925 185  
            41 0.009 9 985 54 931 186  
  Peak chute length starts at 42 minutes --- ---------------- ---------------- ---------------- ----------------> 42 0.006 6 991 56 935 187  
            43 0.004 4 995 58 937 187  
            44 0.002 2 997 60 937 187  
            45 0.001 1 998 62 936 187  
            46 0.001 1 999 64 935 187  
            47   0 999 66 933 187  
  MSTI Home page         48   0 999 68 931 186  
            49   0 999 70 929 186  
            50   0 999 72 927 185  
            51   0 999 74 925 185  
            52   0 999 76 923 185  
            53   0 999 78 921 184  
            54   0 999 80 919 184  
            55   0 999 82 917 183  
            56   0 999 84 915 183  
            57   0 999 86 913 183  
            58   0 999 88 911 182  
            59   0 999 90 909 182  
            60   0 999 92 907 181  
                           
                           
                           
            Total =  0.999 999