Good Samaritan Medical Center
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Transcript of Good Samaritan Medical Center
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Good Samaritan Medical Center
High Density Concrete Placement
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Walls • Blockouts around door for borated polyethelene and lead plates• Physics port
•Allows staff to check radiation levels in the vault before entering•Sleeve through wall at 45 degrees vertical: Location was critical to prevent radiation leak
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• Lid shoring• Wet weight of lid = over 1.6 million pounds• Designed by engineer; installation checked by engineer
• Fireproofing of beams• Before placement of lid• Use of HD fireproofing to prevent damage by forming and reinforcing activities: No addit’l patching required• OFI – sheet metal cap detail
• Allowed for fireproofing of beams before deck was placed
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Test run: Checked maximum free-fall of aggregate
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PlacementHigh Density Concrete supplied by Central Concrete
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Placement continued…• 187.5 CY placed total• 4.5 CY of concrete batched in each 12 CY truck• Rate of placement
• Started at 30 minutes per truck or more• Ended at 12-15 minutes per truck
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Placement continued ….Central concrete quality control manager onsite: Only person allowed to add chemicals to the mix
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Placement continued…Placement of high density concrete required normal size crew
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Finished vault• Due to high density, concrete finished with few imperfections, even with minimal vibrating• Maximum deflection of the lid measured at 3/16”• 12.5 hour pour• 14 hour day