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  • Placing Concrete
  • Concrete
  • Consolidated Builders, Inc.'s plans for construction of the dam, left powerhouse, pumping plant foundation, and appurtenant works during 1939 involved the placement of 3,686,362 cubic yards of concrete, distributed according to table on pg. 129,...
  • Frank A. Banks Collection
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  • Left Power House Concrete
  • Concrete
  • 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...
  • Frank A. Banks Collection
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  • Cement Placement
  • Concrete; Construction equipment; Construction employees
  • Another image showing workers unloading a four-yard bucket of concrete at the left training wall before vibration of concrete. In a continuous concrete operations Westmix, and Eastmix online in October, produced a total of 1,846,481 cubic yards of...
  • Frank A. Banks Collection
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  • Cement Placement
  • Concrete; Construction equipment
  • After dropping four-yard load of concrete workers used large and unwieldy Jackson Two-man concrete vibrators to remove air bubbles in the concrete and allow a stronger structure. The technique for vibrating concrete first appeared in the...
  • Frank A. Banks Collection
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  • High Trestle Cement Placement
  • Concrete; Construction equipment; Construction employees
  • After dropping four-yard load of concrete workers used large and unwieldy Jackson Two-man concrete vibrators to remove air bubbles in the concrete and allow a stronger structure. The technique for vibrating concrete first appeared in the...
  • Frank A. Banks Collection
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  • Placement of Concrete Walls to East Powerhouse
  • Concrete; Construction; Hoisting machinery
  • Concrete on its way to placement in the walls of the east powerhouse. The view shows the mixing plant; the skipway; and a crane lifting a concrete bucket to a railroad below, from which another crane will pick it up and place it.
  • Frank A. Banks Collection
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  • Cement Block Pour Preparations
  • Civil engineering; Concrete; Construction; Construction employees
  • This scene shows typical operations for preparing the blocks for another pour of concrete from the four-yard buckets lifted by cranes from the placing trestle and brought to the cells to unload their cargo. Notice another concrete innovation that...
  • Frank A. Banks Collection
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  • Block Cooling Shaft
  • Concrete
  • Shown here is the exit of a thirty-six inch cooling shaft that was an integral part of the dam construction. A constant flow of water was maintained throughout the structure of the dam using pipes like these to ensure proper temperature. This...
  • Frank A. Banks Collection
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  • Mixing Plant Deconstruction
  • Concrete mixers--Washington (State)--Grand Coulee Dam; Hoisting machinery
  • Like many old construction landmarks, the CBI concrete mixing plant, often aptly referred to as "the house of magic" because of its almost-automatic operation, is disappearing from the project. It was erected early in 1938, to produce the 6,000,000...
  • Frank A. Banks Collection
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  • Chipping hammer
  • Concrete
  • Workers would chip out defective or cracked areas of concrete on the downstream face of the dam and fill them in with new concrete to prevent leaks, erosion, or wear.
  • Frank A. Banks Collection
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  • Left Power House
  • Concrete
  • 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.
  • Frank A. Banks Collection
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  • Two Placing Trestles
  • Concrete; Construction equipment
  • The concrete cells in this image show the construction process of the monolithic Grand Coulee Dam. These low placing trestle reinforced these blocks as they built up to its height, only to be replaced as they surpassed the low trestle by a high...
  • Frank A. Banks Collection
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  • Unloading Four-Yard Concrete Bucket
  • Concrete; Construction equipment; Construction employees
  • Shown here are workers unloading a four-yard concrete bucket and preparing to vibrate any irregular air bubbles out of the new layer of concrete
  • Frank A. Banks Collection
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  • Unit L-3
  • Construction employees--Washington (State)--Grand Coulee Dam; Concrete; Power plants--dams--Washington (State)--Grand Coulee Dam
  • Unit L-3 in the left powerhouse. The turbine scroll case has been embedded in concrete, and form work and concrete placing operations are now in progress for the generator foundation.
  • Frank A. Banks Collection
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  • Thermometer Cable
  • Concrete
  • A water circulation system in the Grand Coulee Dam could change the rate at which water would be pumped through the cooling lines running the length of the dam. When combined with thermometer cables this system ensured the maintenance of optimal...
  • Frank A. Banks Collection
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  • Rock Excavation for Block 39
  • Hoisting machinery; Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Civil engineering; Construction employees
  • Photograph shows a multitude of workers involved in excavation activities behind the timber crib and the west cofferdam. Excavation activities continued behind a protective steel piling structure that boxed in the men and made mechanized concrete...
  • Frank A. Banks Collection
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  • West Bedrock Excavation
  • Dam construction; Excavation; Civil engineering; Erosion protection works; Concrete; Construction employees
  • Photograph shows a multitude of workers involved in excavation activities behind the timber crib and the west cofferdam. Excavation activities continued behind a protective steel piling structure that boxed in the men and made mechanized concrete...
  • Frank A. Banks Collection
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  • Cement Placement
  • Concrete; Construction equipment; Construction employees
  • This image shows workers unloading a four-yard bucket of concrete at the left training wall before vibration of concrete.
  • Frank A. Banks Collection
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  • East Side Highway Pier Two Modification and Aggregate Conveyor
  • Cofferdams; Concrete; Construction; Pedestrian bridges
  • Before enlarging the pier workers keyed groves in the foundation to allow further concrete reinforcement. Seen her is the addition of extra concrete as reinforcement to the sliding foundation of the highway pier.
  • Frank A. Banks Collection
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  • Inclined Double Track Concrete Transfer Skip
  • Concrete
  • Double tracked lift system for transporting concrete from the higher elevation 1180 construction trestle to the power plant construction below.
  • Frank A. Banks Collection

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