In the later, the concrete is made with white sand,
to give a finished appearance to the building.
The roof is composed of concrete slabs, reinforced with expanded metal
laths and finished with cement and mortar. It is then water-proofed
with vulcanite water-proofing and gravel.
In this connection it might be said that, although this system of
construction has been employed before, the building under
consideration is the largest example of this kind of work yet done in
the neighborhood of New York City. It was adopted instead of
corrugated iron, as it is much more substantial, and it was considered
preferable to brick, as the later would have required much more
extensive foundations.
The doors at each of the bays of the building are of rolling steel
shutter type, and are composed of rolled-steel strips which interloop
with each other, so that while the entire door is of steel, it can
easily be raised and lowered.
[Sidenote: _Capacity and
Pit Room_]
All of the tracks in the north and middle bays are supplied with pits
for inspecting purposes, and as each track has a length sufficient to
hold six cars, the capacity of these two bays is fifty-four cars.
The inspection pits are heated by steam and lighted by electric light,
for which latter purpose frequent sockets are provided, and are also
equipped with gas pipes, so that gas torches can be used instead of
gasoline.
[Sidenote: _Trolley
Connection_]
As usual in shops of this kind, the third rail is not carried into the
shops, but the cars will be moved about by means of a special trolley.
Pages:
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190