When more than one sheet is required for a map, plan, or drawing, all sheets will be of the same size and shall bear suitable matching lines or marks when necessary.

(b) For convenient transmission of prints they will ordinarily be folded to the size of letter sheets (8 by 101⁄2 inches) in such manner that the title will appear on one exposed face of the folded print. When, however, a set of maps or drawings comprises several sheets the sheets need not be folded.

(c) Maps and drawings pertaining to the same title when consisting of 3 or more sheets will in the case of maps be accompanied by an index sheet of appropriate scale showing, by outline and number, the limitations of each sheet comprising the map proper; and for drawings the separate sheets comprising the drawing will be appropriately listed in a tabulation appearing on Sheet No. 1.

(d) When the work can be done without detriment to the object of the survey all topographic surveys resulting in maps on a scale of 1:5000 or smaller should conform to the scale prescribed for military maps. These scales are 1:5000, 1:10000, 1:20000, and 1:62500 with contour intervals of 5, 10, 20, and 20 feet, respectively. Architects scales will in general be used for plans of floating plant, batteries, buildings and similar structures, and decimal scales for maps, charts, etc.

219. Character of work.-All lines must be clear, sharp, and distinct, drawn or printed in jet black waterproof ink. A border line consisting of a single medium heavy line shall be used. Special pains will be taken to avoid the use of colors in drawings intended for publication. Drawings of profiles, diagrams, sections, etc., on commercial cross-section paper or cloth must be made on material having blue cross-section lines; of these blue lines, those necessary to be shown in the published drawing must be drawn over in black. So far as practicable uniformity in size must be maintained in figures or letters presenting a particular class of information such as soundings, elevations, names of counties, towns, proprietors, etc., and figures and letters must be clear, distinct, and readily legible, especially on drawings intended for publication, in which cases the letters and figures must be made of size large enough to avoid blurring and obscurity when reduced. On finished maps accompanying reports, especially maps and drawings intended for reproduction, care will be exercised to show only a sufficient number of typical soundings to indicate the depths available as differentiating from soundings shown on working and contract maps and drawings.

220. Lettering.-The lettering on ordinary Engineer Department river and harbor and flood control maps and drawings will adhere to the single stroke and block type of lettering. On maps vertical lettering will be used to show land features and slant lettering inclined to the right on a ratio of substantially 4 horizontal to 10 vertical will be used to show water features including soundings. On drawings the lettering of main designations will be vertical, and of minor features including notes and dimensions may be slant. Use should be made of conventional lettering template devices and of printing press methods to the fullest extent practicable in the lettering of maps and drawings. On general topographic and military maps the style of lettering shall adhere to the standards described in Training Regulations 190-10, War Department.

221. Conventional signs and abbreviations.-Training Regulations 190-10, War Department, constitute the standard to be followed.

222. Title.—(a) The title shall be placed in the lower right-hand corner of each drawing unless the use of this space for other information is unavoidable, and for sheets 27 by 40 inches will usually be of the form and dimensions given

This space for a clear and concise statement of what the drawing consists. Such words as "Plan of," "Map of," "Drawing of," etc., are unnecessary and should be omitted.

in the accompanying diagram, proportionate reductions being made on the smaller drawings.

(b) The following data must appear in the title on every drawing: A graphic scale; a statement of the proportional scale or representative fraction, except on maps and drawings which are to be reduced for publication; and the date of action by the District Engineer. In addition the date of transmittal will be given as indicated in the form of title, on all drawings transmitted by District Engineers to the Chief of Engineers.

(c) The words "War Department" shall be placed at the upper left-hand corner of the drawing and outside of the border, and similarly the words "Corps of Engineers, U. S. Army" at the upper right-hand corner,

Approved: Submitted: or Approval recommended (or such as the case may require):

Corps of Engineers.

Transmitted with letter or endorsement

Dated.

-31"

19

NOTE. The lines showing the different divisions of space allotted for the title should not appear on the drawing. The dimen sions are to be considered as showing the general form of the title. The space and the data given may be varied to suit the particular needs of the case.

(d) Drawings intended for publication shall be prepared with a view to reduction to the smallest practicable compass, not smaller than an octavo page, and bear a statement in pencil on the lower margin of the amount of reduction contemplated. The usual reduction is at least one third. The preferred height of published drawings is that of an octavo page which requires that the work on such drawings after reduction, shall not exceed 71⁄2 inches in height, exclusive of margins.

223. Fortification drawings.-See Chap. IV.

224. Orientation.—(a) In general, river and harbor and flood control maps will be so oriented that north will be toward the top. A different orientation may be used in special cases where it results in greater convenience.

(b) All vicinity sketches whether on maps relating to river and harbor or flood control, should be oriented in the same manner as the main maps or, in the case of the plans of work, with the orientation of the principal plan. (c) Where two or more plans of the same structure or the plans of two or more different structures are put on the same drawing, the orientation of all must conform to one another and to their relative positions on the ground. (d) The true meridian will be shown on all maps or charts of land or water areas and where useful the magnetic declination with the year of same should also be given.

225. Physical and other data. (a) When practicable maps and charts will show locations of stations of the United States Lake Survey, United States Coast and Geodetic Survey, or the United States Geological Survey.

(b) The direction of water flow of all waterways will be indicated by arrow heads at upper and lower limits of sheet pointing in the direction toward which the water moves. Tidal flow will be indicated by double or multiple arrowheads with the words "ebb" and "flood" appropriately stated. Survey maps of harbor and breakwater improvements should contain a wind rose or chart showing the force and direction of prevailing winds.

226. Harbor line maps.-See Chap. V.

227. Project maps.-(a) Maps as indicated below of the works of river and harbor and flood control improvement in each engineer district showing conditions on September 30, shall be prepared and sent to the Chief of Engineers, on or before November 15, annually, as follows:

(b) One index sheet for river and harbor projects and one index sheet for flood control projects, listing the maps by name and number, the order of listing and the number assigned to each map to adhere in so far as practicable to the listing of improvements given for each engineer district in the Annual Report. (c) One index map for river and harbor projects and one index map for flood control projects of the entire engineer district with the location of all authorized projects as reported upon or listed in the current Annual Report clearly indicated thereon, the limits of river projects to be shown by a paralleling dotted line. The district limits will be indicated by a boundary line. All prominent cities and towns will be shown as well as the main and more important connecting railroads. (d) One map of each individual project. The map shall show project length, width, and depth of channels, positions of dikes, jetties, breakwaters, locks, dams, flood control reservoirs, levees or other structures, a brief statement of the project and of the progress of the work, the head of navigation, the range of tide if any, the cost of new work and maintenance to preceding June 30 on the existing project and similar separate total for all previous projects if any, and the total commerce in tonnage for the past year as reported in the Annual Report. Land and water areas must be distinctly indicated preferably by

narrow shading on landward side of shore lines. Extensive detail of topography or hydrography is not necessary. What is desired is an outline map showing in clear and concise form for ready reference the information indicated. The maps should show the location of principal railroads. Distances in miles above the mouth or other base point should be indicated at intervals of approximately one inch on maps of rivers and other waterways.

(e) One plan of each lock and dam, flood control dam, levee or flood wall, showing general outlines with dimensions, boundaries of United States land including acreage, typical sections, and information regarding cost of construction, of operation, when built, or status of construction, etc. The lock dimensions should be the maximum available width and length for passage of vessels. In case of a series of locks and dams or other structures the approved project will be stated only on the general project map, the detailed plan of separate structures to be omitted therefrom. These plans will contain an inset vicinity sketch of the immediate locality.

(f) In the case of flood control reservoirs the map will show the reservoir basin outlined at the elevation of maximum pool.

(g) Twenty-five sets of index sheets and maps shall be furnished, the maps to be 8 inches by 101⁄2 inches, 154 inches by 101⁄2 inches, or 221⁄2 inches by 10% inches in size over-all including a margin 4 inch wide along the left-hand edge of the 101⁄2-inch dimension to permit binding in standard letter size loose leaf binders. Maps will not be larger than the 8-inch by 101⁄2-inch size unless urgently necessary. Each map will have a narrow border line, the number of the map to be prominently marked on the face of the map in the upper right-hand corner inside the border.

(h) The project maps are in constant use by the Chief of Engineers and the administrative personnel of his office. It is essential that the data appearing on the maps be concise and accurate and that the draftsmanship be of a high order of excellence. The lettering must be clear, open, and not too small in order to avoid blurring in prints.

(i) It is desired that the prints be made on a medium thick or heavy grade of black or brown process paper (dark lines on white ground). ›

228. Bridge and permit plans.—See Chap. V.

229. Revision of drawings.-(a) Upon the completion of any work of construction for which plans have been approved by the Chief of Engineers, drawings will be sent to the Chief of Engineers upon which shall be shown the work as actually constructed. They will be accompanied by the original drawings of the work or prints thereof which will be returned later for such disposal as the officer in local charge may direct.

(b) Where plans for work of special interest have been approved by a Division Engineer, final plans of such work should be furnished the Chief of Engineers when in the opinion of the Division Engineer they would be of value.

(c) The changes may be indicated in colored ink on prints of the construction drawings or the tracings may be revised or new drawings prepared to show the work as constructed. One or more methods may be used for the sheets of a single set of final plans.

(d) A set of final plans for any works or structure shall consist of a complete set of plans and will include sheets on which no changes are necessary as well as those on which changes have been indicated. The final plans should not, however, include sheets showing stress diagrams or hydrographs of river stages or other nonessential data unless actual details of construction are included on the same sheets. The final drawings for a structure or work may consist of a single set of drawings for the entire job, such as a lock and dam complete with all

appurtenant works; or separate sets covering the work performed under separate contract or hired labor operations. The former is preferable in cases of small jobs and the latter for more important works.

(e) In all cases of corrections or additions to maps and drawings explanatory notes shall be placed upon them giving the dates and a brief statement of the character of such changes. These notes should be in tabular form placed in the lower right-hand corner of the drawing adjoining the border and the title, and either above or on the left-hand side of the latter. When the changes are such as to require a new drawing, the date of the new drawing and the word "Superseded" will be entered in the tables.

REPORTS

230. List of reports required.-Division and District Engineers may from time to time submit an analysis of any Department report hereinafter enumerated, with recommendation, which they believe should be eliminated, revised, or consolidated.

SEMIMONTHLY

(a) Changes in Classified Service (E. D. Form No. 28). (Including where applicable pay roll cards, G. A. O. Form No. 2091, and personal service cards, C. S. C. Form No. 2806) (Chap. X).

(b) Changes in Status of Employees Appointed Without Reference to Civil Service Rules (E. D. Form No. 28b).

(c). Man-hours of Employment and Expenditures (C. LS. R&H No. 39 and No. 64, 1938).

(d) Obligations and Expenditures, Cumulative by Official Projects (Emergency Relief funds) Telegraphic (C. L. Finance No. 142, 1939).

MONTHLY

(a) Accident Prevention (Forms S-1, S-2, S-3, S4, S-6 and 8-7) (Chap. I and C. L. R&H No. 67, 1938).

(b) Appointments and Separations, Register of (C. S. C. Form No. 2807) (Sec. V, Engineer Retirement Manual).

(c) Automobile Identification Plates, Issue of, by Division Engineers (E. D. 5779, July 29, 1938).

(d) Checks Drawn, List of (Chap. VIII).

(e) Checks, Spoiled, Voided and Canceled (Chap. VIII and G. A. O. Reg. No. 35, 1924).

(f) Civilian Employee Strength (Chap. X).

(g) Commercial Statistics to Newspapers (Chap. II).

(h) Contracts in Force (E. D. Cost Form No. 50) (Chap. II).

(i) Employees, Emergency and Temporary (E. D. Form No. 28a) (Chap. X).

(j) Federal Power Commission, Investigations under, Report of (Chap. V).

(k) Funds, Estimate of (E. D. Form 16 as amended) (Chap. VIII).

(1) Job Cost Sheet (E. D. Cost Form No. 19) (Par. 167, Cost Accounting Manual).

(m) Money Accountability (Chap. VIII):

(1) Accounts Current (Chap. VIII).

(2) Adjustments, Schedule of (G. A. O. Reg. No. 80, 1934).

(3) Advances to Agent Officers, Schedule of (G. A. O. Reg. No. 80, 1934). (4) Bills of Lading and Transportation Requests Issued (E. D. Form

(5) Cash Disbursements, Schedule of (G. A, O. Reg. No. 80, 1934).