The economics of fieldwork in bridge building may be summed up in the following instructions to the Resident Engineer:

First. Start work ahead of the contractor so as to have all the triangulation finished and bench-marks established before he is ready to begin actual operations.

Second. Employ as small a force as practicable for attending properly to all work, especially the inspection of materials and workmanship, and retain only truly competent, energetic men. If low-grade helpers are required occasionally, obtain them from the contractor, and be sure to pay him for their time, unless the specifications or contract provide that such labor shall be furnished free of charge, as is often the case.

Third. See that the entire force is kept really busy at all times. This can be accomplished by laying out for each member thereof routine work for his spare moments.

Fourth. Before any construction work is begun, lay out on paper an economic system for carrying on the field work from start to finish, and see thereafter that it is strictly followed. Should at any time any development occur that would render advisable a modification of the working schedule, the necessary changes therein should at once be made; and all interested parties should be notified in writing accordingly.

Fifth. Never let any portion of the work drop behind, even for a single day; because field engineers are assumed to work longer hours than the staff of the designing office. Field engineers should live on the job, so as to be ready at all hours to do unexpected work and to meet emergencies, consequently they have no cause for complaint when instructed to work overtime.

Sixth. See that the home office is supplied strictly on time with the regular field reports, and send in special ones whenever such seem necessary or advisable.

Seventh. Do the testing of cement far enough in advance of its use to make sure of its having the requisite strength; and if there be any other materials to be inspected, keep the work of inspection well in advance of the demand.

Eighth. As soon as materials are received at the site, see that they are checked by the contractor at once, and report immediately to the home office any shortage discovered, in order that it may be made good before it can cause delay in the construction. See also that all material is unloaded

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