STEM Building
STEM Building
Hagerstown Community College
Hagerstown Community College
Hagerstown,
21742
Hagerstown, Maryland
Maryland 21742
Science Technology Engineering Mathematics Building
Craig Owsiany
Architectural Engineering – Construction Management
Outline
o Overview
•5 Floors
•Size: 62, 840 SF
•Cost: $15.6 M
•Duration: 18 Months
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Southwest View
South View
Southeast View
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Science Technology Engineering Mathematics Building
Craig Owsiany
Architectural Engineering – Construction Management
Outline
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Typical Lab
Typical Floor Plan
Energy Lab
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis I: Mat Slab Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Structural Breadth
Outline
Background
o Overview
•Blasting
•Non Competent Rock
Solutions
Goal
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
•Reduce Cost Impact
•Maintain Schedule
•Ensure Structural Integrity
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis I: Mat Slab Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Structural Breadth
Outline
o Overview
o Analysis I: Mat Slab Redesign
Structural Analysis
• Sum Live and Deal Loads
•Compare Against Design Load
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
Design>Actual=No Redesign
o Conclusion/Findings
Design<Actual=Redesign Required
o Acknowledgments
o Questions
Structural Calculations
Dead Loads
Total (lbs)
Compacted Soil (4')
496,100
Concrete-Normal Weight (5")
20,834
Concrete-Normal Weight (10")
728,625
Concrete-Normal Weight (12")
498,075
Concrete-Normal Weight (18")
56,306
Concrete-Normal Weight (20")
34,531
Concrete-Light Weight (4 1/4")
251,828
Beams
30,525
Stairs (20")
305,723
Curtain Wall & Metal Panels
23,460
Brick Veneer
92,576
Green Roof
132,688
Ceiling
28,604
Partitions
56,038
HVAC & Plumbing
57,208
Cistern
31,000
Total
2,844,119
Findings
Live Loads
Corridors 3rd Floor & Below
Corridors Above 3rd Floor
Classrooms
Stairs
Total
Total (lbs)
80,990
97,188
105,240
122,289
405,706
Dead Loads Total
Live Loads Total
Extended Foundation Wall Loads
Dead+Live
Dead +Live+Extended
Percentage Increase
2,844,119
405,706
139,750
3,249,826
3,389,576
4.12%
• 10-15% load increase would require further investigation
Total Load (P)
Area (A)
P/A (lbs/sf)
3,389,576
1,128
3,006
• Mat slab designed for 8000 psf
•Actual Load = 38% of Design Load
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Craig Owsiany
Architectural Engineering – Construction Management
Analysis I: Mat Slab Redesign
Structural Breadth
Outline
Cost Impact
o Overview
Triad Solution Cost
$/Sq. Ft.
CY
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Materials
Concrete
Total
Materials
Formwork-Lumber
Formwork-Plywood
Lean Concrete
Backfill
Crew
Total
LF
$/LF
Sq. Ft.
Savings
$/CY
299.3
LF
Materials
LF
Formwork-Lumber
Formwork-Plywood
Lean Concrete
Normal Weight Concrete
Backfill
Crew
Total
$/LF
240
GC Solution
$/Sq. Ft.
CY
Sq. Ft.
Duration
$/Crew
80
$/CY
Duration
$/Crew
0.3
755
1.41
208.8
80
1
$/LF
480
Proposed Solution
$/Sq. Ft.
CY
Sq. Ft.
$/CY
Duration
$/Crew
0.3
426
1.41
20.9
34.3
80
92
2
Total
$ 23,944.00
$ 23,944.00
Total
$
72.00
$ 1,064.55
$ 16,704.00
$
960 $
960.00
$ 18,800.55
Total
$
$
$
$
$
960 $
$
144.00
600.66
1,672.00
3,155.60
1,920.00
7,492.26
Totals
Solution
Triad
GC
Proposed
$
$
$
Cost
23,944.00
18,800.55
7,492.26
Total Savings = $16k
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis II: Green Roof Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Mechanical Breadth
Outline
Background
Background
Redesign
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
• Conventional Green Roof
• 3” Low Profile
•Architectural Facets
• Negligible Thermal Value
• Minimal Educational Value
Green Roof Takeoffs
SF
Aggregate/Stone Gravel
308
Concrete Tile Pavers
542
Wood Panel Pavers
396
Indegenous Vegetation
776
Total SF
2022
%
15.2%
26.8%
19.6%
38.4%
100.0%
• LiveRoof System
• 6” High Profile
• Added Thermal Value
• Higher Educational Value
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis II: Green Roof Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Mechanical Breadth
Outline
Conventional Green Roof
LiveRoof System
Benefits
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
• Faster Installation
• Low Maintenance
• Immediate Vegetation
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis II: Green Roof Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Mechanical Breadth
Outline
Cost Impact
Payback Period
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Conventional Low-LiveRoof Low
Conventional High-LiveRoof High
Conventional Low-LiveRoof High
Payback Period
$ Markup $ Maintenance Savings Payback Period (years)
24264 $
1,920.90
12.6
34374 $
3,639.60
9.4
46506 $
1,617.60
28.8
• Payback period is 28.8 years for maintenance cost alone.
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis II: Green Roof Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Mechanical Breadth
Outline
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Thermal Calculations
Thermal Calculations
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis II: Green Roof Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Mechanical Breadth
Outline
Conventional Green Roof Heat Loss
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
Conventional Roof
Materials
Modified SBS Cap Sheet
Modified SBS Base-Ply Sheet
R-30 Insulation
Decking/Concrete
Conventional Roof Total (BTU/hr)
Sq. Ft.
R-Value
Summer: Q=A(To-Ti)/R Winter: Q=A(Ti-To)/R
2022.00
0.70
2022.00
0.70
2022.00
30.00
2022.00
0.43
2022.00
31.83
101.66
2223.72
Current Green Roof Heat Loss
Proposed Green Roof Heat Loss
Current Green Roof
Materials
Sq. Ft. Lb./Sq. Ft. R-Value Conventional Roof R-Value Total R-Value Summer: Q=A(To-Ti)/R Winter: Q=A(Ti-To)/R
Stone Aggregate
308.00
31.25
0.15
31.83
31.98
15.41
337.14
Wood Pavers
396.00
6.13
2.13
31.83
33.95
18.66
408.25
Concrete Pavers
542.00
23.00
0.65
31.83
32.48
26.70
584.14
3" Conventional Green Roof 776.00
23.44
1.43
31.83
33.25
37.34
816.84
Vegetation
Soil
Filter Fabric
Drainage Channel
Root Barrier
Architectural Roof Total
98.12
2146.37
Proposed Green Roof System
Materials
6" LiveRoof System
Prevegetated Modules
Root Barrier
All Green Roof Total
Sq. Ft.
R-Value Conventional Roof R-Value
2022.00
2.85
31.83
Total R-Value
Summer: Q=A(To-Ti)/R Winter: Q=A(Ti-To)/R
34.68
93.30
2040.95
93.30
• 100% LiveRoof System
• High Profile
o Conclusion/Findings
o Acknowledgments
o Questions
• Low Profile Green Roof
• Concrete Pavers
• Wood Pavers
• Stone Aggregate
• 8.2% reduction from conventional roof
• 5.0% reduction from current green roof
2040.95
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis II: Green Roof Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Mechanical Breadth
Outline
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Justification
Educational Factor
• Alternate Energy Program
• Mechanical Engineering
Educational Factor
• Thermal Cameras
• Heat Sensors
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Outline
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Analysis III: Curtain Wall Redesign
Background
•
•
•
•
•
•
Stick Built Curtain Wall
Approximately 1/3 of Building Envelope
9260 SF
Lengthy Installation Time
Site Congestion
Short Lead Time
Redesign
•
•
•
•
•
Unitized Curtain Wall System
Short Installation Time
Shakeout Not Required
Higher Quality Seals
Long Lead Time
Craig Owsiany
Architectural Engineering – Construction Management
Goal
• Reduce curtain wall installation time
• Achieve earlier water tight date
• Reduce over all schedule
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis III: Curtain Wall Redesign
Outline
o Overview
Craig Owsiany
Architectural Engineering – Construction Management
Schedule
Schedule Acceleration
• Original Duration: 40 Days
• New Duration: 20 Days
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
1.
2.
3.
4.
5.
6.
Stick Built System
Deliver Materials
Shakeout
Install Sills and Jambs
Install Mullions
Glaze
Caulk
Unitized System
1. Deliver Modules
2. Set Module
3. Caulk
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Analysis III: Curtain Wall Redesign
Outline
Lead Time
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
Week
1-6
o Questions
Stick Built System
Obtain materials
• Stick Built: 8 Weeks
• Unitized: 4 Weeks
Unitized System
Obtain materials
Week
Stick Built System
Unitized System
1
Deliver/Frame
Deliver/Install/Caulk
2
Deliver/Frame/Dimension
Deliver/Install/Caulk
7
Fabricate/Deliver
Fabricate/Deliver
3
Deliver/Frame/Dimension
Deliver/Install/Caulk
8
Fabricate/Deliver
Fabricate/Deliver
4
Deliver/Frame/Dimension/Glaze/Caulk
Deliver/Install/Caulk
5
Deliver/Frame/Dimension/Glaze/Caulk
6
Deliver/Frame/Dimension/Glaze/Caulk
7
Glaze/Caulk
8
Glaze/Caulk
9-12
o Acknowledgments
Installation Time
• Stick Built: 8 Weeks
• Unitized: 12 Weeks
o Overview
o Analysis I: Mat Slab Redesign
Craig Owsiany
Architectural Engineering – Construction Management
Fabricate/Deliver
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Outline
Analysis III: Curtain Wall Redesign
Sequencing – Areas of Concern
Craig Owsiany
Architectural Engineering – Construction Management
Resequencing
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
• Reduced Curtain Wall Installation
• Begin MEP rough ins 1 week early.
• Earlier Water Tight Date
• Stack MEP rough ins and finishes on
3rd, 4th and 5th floors.
• Finishes
o Analysis III: Curtain Wall Redesign
• MEP Rough Ins
o Conclusion/Findings
o Acknowledgments
o Questions
• Sync water tight date and completion
of rough ins.
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Outline
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Analysis III: Curtain Wall Redesign
Accelerated Schedule
• Overall schedule reduced by 44 days
Craig Owsiany
Architectural Engineering – Construction Management
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Outline
Analysis III: Curtain Wall Redesign
Analysis I
Craig Owsiany
Architectural Engineering – Construction Management
Analysis II
Analysis III
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Lessons Learned
o Acknowledgments
o Questions
Mat Slab Redesign
Green Roof Redesign
Curtain Wall Redesign
• Current mat slab will support additional load
• Cannot place an R-Value on living organisms
• 44 days saved
• Redesign not required
• Using an R-Value alone will not produce
accurate heat transfer results
• Higher quality product
• Further attention given at a 10-15% load
increase
• Resequencing, not accelerating the schedule
• Offers great value as an education tool
• “We are sequencing trades in a manner to optimize
productivity for all trades involved.”
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Outline
Acknowledgements
Analysis III: Curtain Wall Redesign
Acknowledgements
Craig Owsiany
Architectural Engineering – Construction Management
Acknowledgements
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
General Contractor
• Greg Ramirez, Senior Project Manager
• Eric Osborne, Senior Superintendent
• Brett Robinson, Field Engineer
Owner
• Dawn Baker, Facilities Project
Coordinator
• Robert Spong, Facilities Management
and Planning Director
• Gerard Rath, Owner Rep.
Architect
• Mark Merolla, Architect
Structural Engineer
• Chris Johnson, Structural Engineer
Penn State AE Faculty
• Bob Holland
• Rob Leicht
STEM Building
Hagerstown Community College
Hagerstown, Maryland 21742
Outline
Analysis III: Curtain Wall Redesign
Questions
o Overview
o Analysis I: Mat Slab Redesign
o Analysis II: Green Roof Redesign
o Analysis III: Curtain Wall Redesign
o Conclusion/Findings
o Acknowledgments
o Questions
Questions?
Craig Owsiany
Architectural Engineering – Construction Management