Page:Final Report - The Columbia River Interstate Bridge.pdf/61

 The paints used and the parts where they are used are as follows (Spans are numbered from Vancouver, the left span is No. 3):

COLUMBIA RIVER anuoE—Spans 1, 2, 3 and 4, and Towers:

Shop coat, Tockolith; ﬁrst ﬁeld coat, No. 1379 R. I. V". maroon; second ﬁeld coat, No. 49 R. I. W. black. Made by Toch Brothers, 320 Fifth avenue, New York, N. Y.

Cou'smu [tn-mt Bmooe—Spans 5, G, 7, 8 and 9:

Shop coat, red lead lute; ﬁrst ﬁeld coat, Metalkote brown; second ﬁeld coat, Metalkote black. Made by Lowe Brothers, 451 East Third street, Dayton, Ohio.

COLUMBIA RIVER lintooa—Spans 10, 11, lt—The Oregon Slough bridge and the Columbia

Slough bridge (except main girders):

Shop coat, Dutch Boy red lead in oil. Made by the National Lead Company, 111 Broadway, New York, N. Y. First ﬁeld coat. Nobrae. brown; second ﬁeld coat, Nobrac, black. Made by the Patterson-Sargent Company, 38th street and St, Clair avenuc, Cleveland, Ohio.

Cowman Rim Balboa—Span 12: Shop coat, Dutch Boy red lead in oil. Made by the National Lead Company. First ﬂeld coat and second ﬁeld coat, paint furnished by Dunn & Company of Port- land, Ore.

COLUMBIA RIVER Baroda—Span 13: Shop coat, Dutch Boy red lead in oil. Made by the National Lead Company. First ﬁeld coat and second ﬁeld coat. paint furnished by Rasmussen & Company of Portland, Ore.

Cowman SLoucn (havens:

Shop coat. Tockolith. Made by Toch Brothers. First ﬁeld coat, Nobrac, brown; second ﬂeld coat, Nohrac. black. Made by the Patterson-Sargent Company.

We recommend that a thorough inspection of the steel structure to determine the condition of the paint be made once a year. Where such inspection discloses rusting of the metal, the metal should be thoroughly cleaned with scrapers and wire brushes and touched up with preferably the same kind of paint as was used for the original second ﬁeld coat. This inspection should also be directed toward the discovery of accumulations of dirt and trash that will hold moisture and so hasten the destruction of the paint. All such accumulations should be removed.

(2) Paving:

In consideration of payment already made. the Warren Construction Company is obligated to maintain all bitulithic paving in repair for a period of ﬁve years. This will be till March 1, 1922. This maintenance contract also gives your Commission the option of requiring this company to undertake the maintenance of such paving south of the Columbia River bridge for a second period of ﬁve years, the exercise of such option binding your Commission to pay this company annually for such second ﬁve-year period 1½¢ per square yard of pavement covered by this contract.