Category: Engineering & Technology
The section of the Pennsylvania Railroad Tunnel work described in this paper is that lying between Tenth Avenue, New York City, and the large shaft built by the Company at Weehawken, N. J., and thus comprises the crossing of the North or Hudson River, the barrier which has sto...
On one occasion, when for some reason the shield was stopped with the shove only partly done, and the exhaust valves had not been shut off, the platforms continued to slide and...
16. Part 16All materials of construction were loaded on cars on the surface at the point where they were stored, and hauled on these to the elevators, sent down the shaft, and taken along...
8. Part 8In the original design a ½-in. taper was called for, that is, the wide side of the ring was ½ in. wider than the narrow side, which was of the standard width of 2 ft. 6 in. As a...
2. Part 2The low-pressure air cylinders were lubricated with "High Test" oil, having a flash point of 600° Fahr. The oil was forced from a receiving tank into an elevated tank by high-pr...
17. Part 17In the section of the tunnel in which there were circumferential reinforcement rods in the duct bench, the rods were in place before the laying commenced, as they had been place...
1. Part 1The section of the Pennsylvania Railroad Tunnel work described in this paper is that lying between Tenth Avenue, New York City, and the large shaft built by the Company at Weeha...
3. Part 3The plans and designs for these tunnels are shown on Plate XXXII. In this short length of about 977 ft. there are no less than nine different kinds of cross-section. The reason...
7. Part 71.--4-way duct, for telephone and telegraph cables, 2.--2-way duct, for telephone and telegraph cables, 3.--1-way duct, for high- and low-tension cables, 4.--Plug for closing op...
10. Part 10====================================+================+================| | North | North | | Manhattan. | Weehawken. | ------------------------------------+----------------+-----...
6. Part 6The mixing was done by a No. 4 Ransome mixer, driven by 30-h.p. electric motors. The mixer at Manhattan was set on an elevated platform at the north end of the intercepting arch...
15. Part 15===+===========+=======+==============+====+============+==+==+===+===+==| | | | AVE. NO. | W| | | OF MEN | e| | DESCRIPTION | IN GANG | i| |-------+--------------+----+--------...
9. Part 9The greatest deviations between the lines and grades in the subaqueous tunnels as determined by these means and those as originally laid out in the contract drawings are on the...
18. Part 18At Manhattan the sand and stone were received from the bins in chutes at a small hopper built on the permanent upper platform of the intercepting arch. Bottom-dumping cars, divi...
12. Part 12The iron was brought into the tunnel on flat cars, two segments to the car, and was lifted from the car and lowered into the invert of the shield by a block and fall and chain s...
5. Part 5+=============================+================================ | | _Ke_ | |--------+------------+---------- | |Per foot|Per bent, |Per cubic | |run of |3 ft, 6 in.,|yard | |tun...
13. Part 13=+===========+=======+==================+===+============+==+==+==+==+==| W| | | AVE. NO. | e| | | OF MEN | i| | DESCRIPTION | IN GANG | g| |-------+------------------+---+-----...
14. Part 14=+===========+====+====+====+====+====+====+=====+=====+=====+=====+=====| W| | BOLTING TIME, WHOLE |Time| | e| | TIME ON BOLTS AFTER | | | i| | RING IS COMPLETE. |lost| TOTAL T...
4. Part 4+---------+--------+--------+-----+-----+------+------+-------+ | Drilling and Firing Data for | | Each Sub-division of Section | |---------+--------+--------+-----+-----+------...