921 resultados para tunnel reinforcement
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Tunnel with air ducts running along ceiling.
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Steel framework being laid for the Service Distribution Tunnel. Many of these tunnels run under the Brock Campus supplying important utilities and other functions.
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Four men (unidentified) walking in tunnel wearing hard hats and carrying flashlights.
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Consulting Engineer drawing of Sections of the Discharge Tunnel. Included in the drawing is the "cross section of tunnel with timbering" and "longitudinal section showing Timber in straight tunnel". Dated October 1902.
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Plan and profile of discharge tunnel along Niagara River. The horizontal scale is 1 inch = 100 feet, the vertical scale is 1 inch = 40 feet. The drawing is dated November 7, 1902.
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Drawing by consulting engineer dated October 19, 1901. Scale is noted as 1/4 inch = 1 foot.
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Four men (unknown) standing in the tunnel wearing hard hats.
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A large group of men in hard hats in the tunnel. The names of the men are unknown.
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Four men standing in hydro tunnel.
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Photograph of water rushing through hydro tunnel.
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Another photograph of several men walking through the tunnel.
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Large group of men standing in the tunnel wearing boots and hard hats.
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Group of men in the hydro tunnel with a loaded dolly and large lamp for light.
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One male looking down tunnel.
