This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book
(without typos) from the publisher. Not indexed. Not illustrated.
1914 Excerpt: ...from the cars by means of wheel-barrows. The
mixers discharged into steel bucket hoists which in turn dumped
into a forcbay from where it was taken to the forms by two wheel
push carts. A substantial staging 6 ft. wide, of 4 in. x 4 in.
timbers and 4 in. x 6 in. timbers for uprights with 2 in. planking
was built along all walls. Construction commenced in the early part
of December, 1912. but considerable delay was experienced on
account of difficulty in getting materials and some time was also
lost on account of bad snow storms. Good progress was not attained
till the first of February, but from then on the work went on
rapidly and the building was delivered to the Northern Pacific
about the first of June. Considerable freezing weather necessitated
the installation of steam pipes between the 4 in. walls, and the
water used for mixing the concrete was heated to almost the boiling
point and the proper amount run into the mixer. The correct
proportions of sand and gravel were then added to the water and
thoroughly mixed, after which the cement was dumped in and mixed
sufficiently to insure its proper distribution. By using this
method concrete was delivered from the mixer at about 90 deg. F. By
taking the precautions noted above, no trouble was experienced with
frozen concrete. The performance of the plant in preventing loss by
melting of the stored ice has been so satisfactory that the owners
consider that the economy thus secured pays good interest on the
total investment made. The work was carried on under the direction
of W. L. Darling, chief engineer of the Northern Pacific, and the
late W. C. Smith, chief engineer maintenance of way. Deeks. Deeks
& Smith, St. Paul, Minn., were the contractors, and the
consulting engineer was C. A. P. Turner, Minneapo...
|Country of origin:
American Railway Convention
||246 x 189 x 19mm (L x W x T)
||Paperback - Trade
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