This section is from the book "Complete Self-Instructing Library Of Practical Photography", by J. B. Schriever. Also available from Amazon: Complete Self-Instructing Library Of Practical Photography.
Prints Of Uniform Size. All prints are of the
courtesy or the Arnold Co., Chicago Illustration No. 83 Construction Blue Print See Paragraph 380 same size, and are bound in the same manner, the lettering appearing in approximately the same location and in approximately uniform type throughout.
379. It is not always possible for the contractors to take their own photographs. As a matter of fact, it is found to work out quite as economically and advantageously to contract with a local photographer convenient to the work in hand, who has a regular time to take the photographs every two weeks, and who makes them in accordance with a standard specification which is furnished by the engineers.
380. In Illustration No. 83 is shown a reproduction of a blue-print which the Arnold Company supplies to the local photographer. This blue-print is a fac simile reproduction of the diagrams and detailed instructions for the photographer to follow in making pictures for them.
Value And Uses Of Photographs. There are an endless number of ways in which the photographs may be used by the contracting engineer, such as: For bulletin illustrations; for post-cards, which are issued monthly to the regular mailing list of railway officials and others; for constant reference in the office for engineering, estimating and designing purposes. The latter may not seem of much importance, but it is surprising how frequently the photo* graphs come into service. One of the principal advantages of the photographs is the assistance they give in keeping the office and the field organizations in touch.
382. A great deal of the work might be termed "rush work;" that is, sometimes work is begun upon both the plans and the actual construction almost simultaneously. This was the case in the Springfield work, and in cases where plans are being made to keep ahead of a large construction force, doing the particular thing that needs to be done at the right time, it is very handy to refer to the photographs as they come in, as they often show conditions of work illustrating a great many details, which would require considerable correspondence or a trip to the work.
383. Photographs are used for illustrations and records of defective material, machinery, etc., and while it is seldom necessary to use any of these as evidence in any controversies, they are a very desirable thing to have.