Browse by Archive
Washington State University Libraries
|
A form is placed in position for the 12-foot diameter circular cable control gallery at elevation 1060 in the dam.
1939-09-25
2024-11-24 |
|
Typical formwork for bedrock pours in the right abutment area.
1939-09-19
2024-11-24 |
|
The steam heating plant "Iron Duke" used by the contractor to protect concrete during the cold weather was mounted on barges moored to the upstream face of spillway block No. 53.
1939-11-06
2024-11-24 |
|
Work is suspended at the pumping plant foundation for the duration of the winter weather.
2024-11-24
2024-11-24 |
|
Looking east over the left power house turbine pits at the beginning of 1939. The transformer structure has been completed, and the contractor has built a construction deck thereon. Three gantry cranes were erected on this deck to continue...
1939-01-01
2024-11-24 |
|
Looking east into the main unit generator room of the left power house during the course of construction. The downstream wall is near to completion for bays L-1 to 9 inclusive, and construction of the power house roof in progress at L-9, 8, and 7.
1939-10-30
2024-11-24 |
|
Large, metal funnels in position for a concrete pour at the left power house control bay walls. The funnels and their respective downspouts convey the concrete into narrow areas between wall forms.
1939-05-24
2024-11-24 |
|
Concrete placing in progress at the left power house. From the elevation 1180 construction trestle, the concrete is lowered down the inclined skipway to the power house construction deck at elevation 1012, where the gantry crane picks up the...
1939-05-29
2024-11-24 |
|
Looking east into the main unit generator room of the left power house during the course of construction. On the left is shown the type of scaffolding erected by the contractor to provide access to the wall pours. On the platform in the foreground...
1939-08-26
2024-11-24 |
|
General view of the right or training wall end of the left power house. As of this date, construction of the power house roof was in progress and had been completed at several bays.
1939-11-14
2024-11-24 |
|
The bus structure base which will support the heavy power conductors leading to the pumping plant. The steel dowels are for the concrete walls of the box-like gallery structure, which will enclose the conductors and which will be built at some...
1905-04-22
2024-11-24 |
|
Concrete placing in progress in the lining of the left abutment gantry crane siding recess.
1939-09-06
2024-11-24 |
|
The left abutment gantry crane siding recess was lined with concrete. The recess extending up the back wall is for a proposed control cable gallery extension which will be completed at some future date.
1939-11-30
2024-11-24 |
|
Making Tiltmeter readings through a special telescope. During foundation grouting, exacting observations were made to determine if any movement of the rock had occurred due to grout being forced into the rock seams and fissures.
1939-10-24
2024-11-24 |
|
During foundation grouting, wood wedges were driven into the rock seams to hold grout leakage to a minimum.
1939-10-24
2024-11-24 |
|
Drilling a grout hole in the pumping plant foundation rock. This is a diamond drill rotated by compressed air and washed by a jet of water to keep the drill rod cool to remove the cuttings.
1939-06-07
2024-11-24 |
|
Types of diamond drill bits used for drilling grout holes. From left to right: 1-7/8" core bit, 1-7/8" concave solid bit, and 1-3/8" concave solid bit. Black diamonds, the cutting agent, are partially visible in the metal of the bits.
2024-11-24
2024-11-24 |
|
Diamond drilling one of the "A" foundation grout holes from the grouting and drainage gallery at elevation 875. An embedded 3-inch pipe extends from the gallery floor to bedrock, and the drill rods are run down through this pipe.
1939-12-01
2024-11-24 |
|
The outlet works at elevation 1036 have been embedded in concrete, and formwork is in place for the gate gallery control chamber. The four vertical pipe headers on each side of the gate chamber forms are the air vent headers for the outlet gates--...
1939-09-21
2024-11-24 |
|
Stoning and finishing the interior surface of an outlet conduit at elevation 934.
1939-12-01
2024-11-24 |
|
The upper portion of a ring follower emergency gate in a chamber of the elevation 950 gallery. The hydraulically operated gate closes or opens a 102-inch diameter outlet conduit 16 feet below at elevation 934.
1939-08-04
2024-11-24 |
|
Looking west over the outlet works and conduit liners at elevation 1036 during the course of installation.
1939-08-10
2024-11-24 |
|
US Department of the Interior Bureau of Reclamation: Columbia Basin Project Washington - Grand Coulee Dam: Method Used to Straighten Gates 19 & 20 - BLK. 57 WE. LINE.
1940-02-13
2024-11-24 |
|
An upper bonnet casting is lowered into place during the installation of a 102-inch diameter ring seal gate at elevation 1036 in the spillway section of the dam.
1939-05-02
2024-11-24 |
|
Ironworkers tightening bolts of the outlet conduit liners which are installed upstream of the 102-inch ring seal gates at elevation 1036.
1939-06-01
2024-11-24 |
