1100 Fairview
Fred Hutchinson Cancer Research Center
$90,825,000
Office Space
Parking Garage
Laboratories
Project Team
Architecture
Zimmer Gunsul Frasca Partnership
Construction Management
Turner construction Company
Structural
KPFF Consulting Engineers
Mechanical & Electrical
Affiliated Engineers Inc.
2005 Masonry Honor Award LEED Certified Building
Typical Bay [30’ x 30’]
8 ½” Flat Plate w/ Drop Panels
Post-Tensioned
Distributed & Banded Tendons
Plaza
Cast in Place Reinforced Concrete Slab
One-Way Slabs w/ Beams
Beam Size Varies
5 th Floor Laboratories
13” Reinforced Concrete Slab
3 0 '
Mechanical Level, Roof, & Penthouse
Steel Framing
W Shape Beams
Rectangular HSS Columns
3 0 '
1 0 '
1 0 '
Reinforced Concrete Shear Walls
20” & 24” thick
Special Boundary Elements
Braced Frames (Upper Levels)
Chevron Braces
Diagonal Braces
X-Braces
Seismic Controls Design
Base Shear: 5980 kip
Proposal:
Frame Main Portion of Building out of
Steel
Why?:
Reduce Building Mass
Improve Constructability
Why Not the Entire
Building: PLaza & Parking Garage
Mechanical, Roof, & Penthouse
Floor
Framing
Composite Beams
Typical Sizes
W 16 x 26
W 16 x 31
Composite Girders
Typical Sizes
W 24 x 55
W 21 x 50
Steel Columns
Typical Sizes
W
W
Typical Live Load: 75 lb/ft 2
RAM Structural System
Architectural Considerations
Columns – maintain location as per original design
EXCEPTION:
1 Column addition
Minimal Architectural Impact
Discontinued @ & below Level 1
5th Floor – Laboratory Area
Evaluation for Walking
Excitation a p
= 0.00408 < 0.005
Lab Equipment is more sensitive to vibration
Second analysis recommended
Concentrically Braced Frames
Simplifying the Design Process
Grouped Structure down to Level 5
Ordinary Braced Frames
Special Braced Frames
Columns: W14 Shapes
X – Bracing: Rect.HSS columns
Complete Building Cost Estimate was not completed-
Steel Alternative Cost was Estimated using
Integrate Cost Estimating
Steel Alternative Cost was Estimated using
Integrate Cost Estimating
Overall savings
$1.8 million
Benefits
Rainwater Retention & Detention
Offsets peak runoff from peak rainfall
Lower roof surface temperature during summer helps to reduce the urban heat island effect
Types of Green Roofs
Extensive
Semi-intensive
Intensive
Benefits
Rainwater Retention & Detention
Lower roof surface temperature during summer
Helps to reduce the urban heat island effect
Potential Areas for Green Roof
– Intensive
• roof area accessible & viewable by the existing roof terrace
– Extensive
• upper roof
• lower roof
– None
• stairwells
• small area with limited access
• mechanical enclosures
• skylights
• plaza
Green Roof Design Decision
– Intensive
• NONE
– Intensive
• All Potential Areas n o t f eas ibil e in t en s ive g r een r o o f ex t en s ive g r een r o o f n o t po s s ibl e
Sedum Planting Layer
6” Roof Lite Extensive MC
Root Barrier
Hydrotech Gardendrain GR 30
[Gardendrain GR 30]
EPDM [ Water Proofing Membrane]
Rigid Insulation
Design Rainfall: 1 inch/hour
Stormwater Runoff
Rational Method (Runoff Model)
Typical Roof: 0.95
Lawn (Sandy Soil): 0.10
Leader Sizing
Based on Projected Area
& Percentage of Vertical Surface Areas
Does Not consider delayed runoff rate
During sustained storm event rate can reach that of typical roof
Total Drainage Area: 76,425 ft 2
(28) 2 inch Leaders
(14) 3 inch Leaders
Total Drainage Rate: 19 gpm
Cost Analysis [RS Means Renovation & Maintenance]
Replacement w/ Ballasted EPDM
@ $4.55/ft 2 = $253,000
Replacement w/ Green Roof
@ $6.47/ft 2 = $360,000
Life Cycle [50 year period]
Ballasted EPDM: 3 @ $253,000 =
Extensive Sedum: 1 @ $360,000 =
$759,000
$360,000
Recommendation: Green Roof Installation @ Time of Replacement