Timbering of south heading of tunnel during construction, Waterworks Park, Detroit water supply system
View of timbering of south heading of tunnel during construction, Waterworks Park, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Land tunnel and structures. Contract RC 12. Dravo Contracting Co., contractors. Photo no. 90. Date: 3-30-31. Photo by Manning Brothers." Typed on back: "14-ft. tunnel south heading. View of timbering in last 18 ft. of tunnel at screen chamber. Timbering placed skin to skin. 12" x 12" timbers except for 12" x 14" cap for first half and 12" x 14" timbers for remainder of stretch. The square timber sets at middle of tunnel section supported a pilot drift excavated first and then enlarged to full tunnel section. Break in timbering showing in roof is at ring of steel sheet piling driven around screen chamber caison [sic]. In background note steel sheet piling driven to support quarter bend excavation."
- Creator:
- Manning Brothers
- Resource ID:
- bh016467
- Subject:
- Tunnels--Michigan--Detroit--Design and construction
- Waterworks--Michigan--Detroit
- Detroit (Mich.). Department of Water Supply
- Photographers--Michigan--Detroit
- Photographic prints
- Date:
- 1931-03-30
- Format:
- 1 photographic print mounted on fabric ; 7.5 x 9.5 in.
- Department:
- Burton Historical Collection
- Location:
- MS/Detroit Archives. Water Board. Waterworks Park. Land tunnel and structures, 4 of 5, 7:4
- Copyright:
- Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.