TABLE 25 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 {| 1-68 | 170.0|Rock | 0 | [R] |20| 5| 5| 5|32|

r {| 69-191 | 307.5|Rock and earth|13 | [R] |22| 9| | 2|33|

d {| 192-388 | 492.5|Silt |18 |[R]Breasting|25| | | 3|28|

i {| | | | {|[S]7 doors | | | | | |

n {| 389-429 | 102.5|Silt piles and|22 |[R]Breasting|24| | | 4|28|

a {| | |rip-rap | {|[S]6 doors | | | | | |

r {| 430-692 | 657.5|Silt |22 |[S]3 doors |24| | | 6|30|

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

{| 204-692 |1,222.5| |21 | |25| | | 5|30|

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

{| 69-692 |1,560.0| |17 | |23| 4| 0| 3|30|

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

Hvy| 693-1,110|1,045.0| |25 |[S]1 door |25| | | 8|33|

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

All| 69-1,110|2,605.0| |20 | |24| | | 5|31|

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

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 36 / 55 题