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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Installation of I-beams.
Type: Visual Materials(Opens in new tab)
Date: 8/11/1955
Call number: photCL SCE 02 - 43652
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

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Portal Powerhouse
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Portal Powerhouse - Staging for inserting I-beams and penstock into pipe.
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Portal Powerhouse - Outer end of 12' pipe showing install of I-beams for supporting penstock.
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Portal Powerhouse - Installing backing I-beams (15") prior to forming for concrete. Strengthening to reduce vibration during high flows.
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Portal Powerhouse - Temporary backing to reduce vibration in 3/8" plate bulkhead in turbine Wye branch inadequate; it was replaced with concrete disc back by I-beams.
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Portal Powerhouse - Installation of penstock supports in pipe. View from downstream side of bulkhead.
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Portal Powerhouse - Installation of penstock supports in pipe. View from downstream side of bulkhead.
photCL SCE 02 - 43655