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Ninth and Jefferson Building, Seattle, Washington
ACS, VARIO and SKYDECK
Efficient Systems Get Customer Ahead of Schedule
The Ninth and Jefferson buil-ding is a $88 million addition to the Harborview Medical Facility. It is comprised of a 5 story 13,300 ft² (1,235 m²) per level cast-in-place concrete parking garage situated beneath the 14 story steel framed structure.
Formwork for the two concrete cores which run the full height of the building were climbed using PERI’s ACS (Automatic Climbing System). Through the use of a 100 kN (22.5 kip) hydraulic climbing mechanism, the 33 ft x 30 ft (10.10 m x 9.10 m) inside platforms self-climb the 12‘-8“ (3.90 m) distance between floor heights. This frees up the crane to erect the structural steel trailing the advancing cores. The project began in December 2006 with all concrete work completed in December 2007.
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| PERI Systems In Use |
ACS R Self Climbing System
SKYDECK Aluminum Slab Formwork System
VARIO GT 24 Girder Wall Formwork
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Dave Johnson
Superintendent
“With very little laydown space on site, all the PERI systems sequence together to give us fantastic production rates. With ACS on the inside two cores freeing up crane time and SKYDECK‘s easily transportable nature, we are at least 3 weeks ahead of schedule.“
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| Contractor: |
Turner Construction, Seattle, WA |
| Field Service: |
PERI Woodland, WA |
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Field Service:
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PERI Formwork Systems, Inc., United States of America
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PERI scope 01 | 2008, USA Canada
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