TABLE 24 SUMMARY PART 1

===+===========+=======+==============+====+============+==+==+===+==+==|

| | | AVE. NO. |

W| | | OF MEN |

e| | DESCRIPTION | IN GANG |

i| |-------+--------------+----+------------+--+--+---+--+--|

g| | | |Ave.| | | | | | |

h| | | |air | | | | | | |

t| | | | | | | | | A| |

| | | |P | | | D| G | i| |

o| | | |r | | | r| r | r| |

f| | | |e | | S| i| o | | |

| | | |s | | h| l| u | T|T |

i| | | |s | | i| l| t | r|o |

r| Section | | |u | | e| i| i | a|t |

o| between |Length | |r |Method of | l| n| n | n|a |

n| rings |in feet| Material |e |Excavation | d| g| g | s|l |

---+-----------+-------+--------------+----+------------+--+--+---+--+--|

O {| 1-54 | 135.0|Rock |0 | [P] | | | | |14|

r {| 55-194 | 350.0|Earth and rock|16 | [P] |22| 6|1/3| 2|30|

d {| 195-393 | 497.5|Silt |20 |[P]Breasting|27| | | 4|31|

i {| 394-440 | 117.5| " |24 |[P]Breasting|28| | | 4|32|

n {| 441-692 | 630.0| " |23 |[Q]3 doors |25| | | 4|29|

a {|-----------+-------+--------------+----+------------+--+--+---+--+--|

r {| 216-692 |1,192.5| |22 | |26| | | 4|30|

y {|-----------+-------+--------------+----+------------+--+--+---+--+--|

{| 55-692 |1,595.0| |20 | |25| 2| | 3|30|

---+-----------+-------+--------------+----+------------+--+--+---+--+--|

Hvy| 693-1,326|1,585.0|Silt |24 |[Q]1 door |27| | | 8|35|

---+-----------+-------+--------------+----+------------+--+--+---+--+--|

All| 55-1,326|3,180.0| |22 | |26| | | 6|32|

===+===========+=======+==============+====+============+==+==+===+==+==|

Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The North River Tunnels. Paper No. 1155 · 第 31 / 55 题