Diagram showing quantity of water reaching sewer based upon the Philadelphia Formula, corresponding grade, size and velocity when running full. Department of Public Works, Bureau of Surveys, 1915 ca.
Plan
Title:
Diagram showing quantity of water reaching sewer based upon the Philadelphia Formula, corresponding grade, size and velocity when running full. Department of Public Works, Bureau of Surveys
Creator:
Not named
Date Created:
1915 ca.
Physical Format:
31 x 25 in.
Identifier:
SD7th-P1-F1-1
Media:
Tracing
Image Note:
The colors in this image may have been adjusted to enhance legibility, and may not accurately reflect the original item.
Scale:
Not noted
Source:
Image File(s)
SD7th-P1-F1-1.jp2