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LN2 BULK
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STORAGE TANK
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TEST MEASUREMENTS
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Christy
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November 5, 2003
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ENGINEERING with the SPREADSHEET
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Copyright 2006 American Society of Civil Engineers
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Summary of Tank Test Measurements
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Please refer to the D sized drawing for measurement recordings.
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The soils engineer predicted less than 1/4" settlement under working loads for
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individual piles. It appears that our greatest settlement is on the order of 1/8".
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Targets were glued to foundation columns on Friday, October 24, 2003. The water fill process
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began on Thursday the 29th and was finished on Sunday, November 2nd.
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row 20
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North
tilt of about 1/16"
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468
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δ = 3/16δ = 1/16δ = 3/16
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1517192123
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δ = 2/16δ = 2/16
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row 30
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3537394143
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δ = 1/16δ = 1/16δ = 3/16
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5557596163
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δ = 1/16δ = 1/16δ = 2/16δ = 2/16
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707274row 40
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δ = 1/16δ = 1/16δ = 1/16
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Figure 54-1. Laser Level Measurements of Column Settlements
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THE LASER LEVEL SETUP
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North
The laser level dot is about 1/8" at 80 ft and
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3/8" at 130 ft. The dot can be split in half by eye
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and can also be split by marking the top and
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bottom of the dot and calculating the middle.
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targets on columns
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laser level
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TBM back site
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 on building
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Figure 54-2 Laser Level Plan View
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red and white
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reflective tape on
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targets
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Figure 54-3 Enlargement of Targets
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on Columns
Figure 54-4 Tank Elevation
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Looking Northwest
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COLUMN SHORTENING
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5 and 3 Lb. lead weights were hung on monel line from the bottom of the deck.
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monel0,000778
/100º F /100 ft
coefficient of expansion
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Temperatures varied from 43º F on Sunday to 57º F on Monday and
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row 100