The Health Care Center
Dauphin County, PA
Ken Lorenz
Penn State University
Architectural Engineering
Construction Management
April 17, 2007
This presentation focuses on a research topic
affecting the industry and two breadth analyses
Value Engineering and Sustainability
CMU Wall Design
PEX Tubing Design
The Health Care Center will provide medical and
psychological care to the students of a local
boarding school
Location
Dauphin County, PA
Project Size
80,000 SF – new
construction
20,000 SF renovation
Occupancy
Health care
Structural Steel Frame
The integrated team will work together to deliver
and meet all expectations
Project Team
Owner
CM
Architect
Structural Engineers
MEP Engineers
Project Cost
$25 Million
Project Duration
August 2006 – August 2008
LEED Certified
Research Topic
Value Engineering and Sustainability
CMU Wall Design
PEX Tubing Design
What is Value Engineering (VE) ?
Value engineering is a systematic effort to find less costly
ways to meet the Owner’s needs in the building without
sacrificing the scope, quality, aesthetics, operating costs
or long term maintenance and replacement costs.
It is important to understand the VE process when
evaluating a buildings alternatives
Information Gathering
Analysis
Creative Brainstorming
Evaluation
Recommendation
Implementation
It is important to understand the VE process when
evaluating a buildings alternatives
Integrated Team
Documenting and Auditing
Performance Evaluations
Conceptual planning, design, and construction are
phases where sustainability can be greatly
influenced by value engineering
Conceptual Planning
Design
Construction
Who should be involved in the VE process?
Owner
Project Team
Architect
Structural Engineers
Mechanical Engineers
Civil Engineers
Construction Manager
3rd Party Consultants
Energy Engineers
Commissioning Agent
The conceptual planning phase is where decisions
determine whether or not the owners requirements can be
met by an addition, renovation, or new construction
Site
Water
Energy
Indoor Environment Quality
Materials
Operation & Maintenance
VE can be used to analyze sustainable alternatives in the
design of the building
Contract
Water
Site
Indoor Environment Quality
Energy
Operation & Maintenance
Materials
The biggest challenge during the construction phase is
managing changes that result from change in scope,
errors & omissions, unforeseen conditions, etc.
Site
Water
Energy
Indoor Environment Quality
Materials
Operation & Maintenance
To conclude, it is important to understand what VE
is and what is involved in the process to obtain
the most sustainability for a building
Be familiar and understand the information gathering,
analyzing, creative brainstorming, evaluating, and
implementation
Form an integrative team, document everything, and set
performance measures for green objectives
Start VE early in the process and continue throughout
focusing on where sustainability can be influences in
the site, energy, water, materials, indoor environment
quality, operation & maintenance, and contracts
Structural Breadth Topic
Value Engineering and Sustainability
CMU Wall Design
PEX Tubing Design
The original design has a sixteen foot concrete
wall around the lower half of the south addition
CMU Wall?
STAAD Pro was used to determine the roof
loads acting on the wall
Assuming
Roof Dead Loads
Assupmtions
PSF
Shingles
2
Insulation
1
Plywood
3
Felt
2
Total
8
Load acting on the
wall = 1.5 kips
Empirical design for concrete masonry walls
was used to determine the CMU size
Assuming
Empirical Design
Weight of wall = 100 psf
Height (16’) / Thickness (t) = 18
100 psf x 16’ = 1.6 kips
Solve for t, t = 10.667
Total load acting on
foundation = 1.5 +1.6 = 3.1
kips
Use 12 inch CMU!!!
3.1 kips < 9.05 kips
12 inch CMU wall design
Retention wall
.364 in-K/ft < 3 in-K/ft
Thermal resistance comparison between the
concrete and CMU design
CMU wall will allow less heat loss due to heat transfer
Cost comparison between both designs
A total savings of $64,718
In conclusion, the 12 inch CMU wall is a
feasible solution
12 CMU is structurally sound
By having a higher R-value, CMU
wall maintains sustainability
CMU will save $63,718
Mechanical Breadth Topic
Value Engineering and Sustainability
CMU Wall Design
PEX Tubing Design
The Health Care Center’s domestic water
supply is a typical branch plumbing system
using copper piping
PEX tubing design?
PEX is cross-linked polyethylene, originally
used in residential and commercial buildings
for radiant heating
Advantages
Ease of Installation
Durability
Cost Effective
Energy Efficient
Noise Reduction
A remote manifold system will be the new
design for the domestic water supply
Supplies water directly to fixture
Less Fittings during installation
Remote Manifold
Remote Manifold Design
1st Floor
2nd Floor
1st Floor
Cost comparison between both designs
Original Plumbing Design
Copper Pipe
Pipe
Copper
Pipe,Pipe,
1/2" 1/2"
PEX
Pipe,
3/4" 1/2"
PEX Pipe,
Pipe,Pipe,
1" 3/4"
PEX
Pipe,
1-1/4"3/4"
PEX Pipe,
Pipe,Pipe,
1-1/2"1"
PEX
Pipe,Pipe,
2" 1-1/4"
PEX
Pipe,
2-1/2"1-1/4"
PEX Pipe,
Pipe,Pipe,
3" 1-1/2"
PEX
Pipe,
4" 1-1/2"
PEX Pipe,
CopperPipe,
Fittings
Copper
2"
90 ELL, Pipe,
1/2" 2-1/2"
Copper
Copper
90 ELL, Pipe,
3/4" 3"
Copper
90 ELL, Pipe,
1" 4"
Copper
Fittings
90 ELL, 1-1/4"
90 ELL, 2"
1-1/2"
90 ELL, 2-1/2"
2"
90 ELL, 3"
2-1/2"
90
ELL,
4"
90 ELL, 3"
Total
90 ELL, 4"
Total
Quantity
Quantity
2366
2
2251
1
875
4
1214
1
722
9
879
4
681
1
172
3
80
1
879
644
681
172
120
80
186
61
37
37
20
37
7
20
47
4
Total Savings = $38,317
Savings 354 man hours
Alternative Plumbing Design
Unit
Mat.
Mat.Total
Total
Unit
Mat.
Mat.
LNFT
1.75
4140.5
1000ft/COIL
364
728
LNFT
2.7
6077.7
300ft/COIL
109
109
LNFT
3.84
3360
500ft/COIL
299.95
1199.8
LNFT
5.4
6555.6
300ft/COIL
178.5
178.5
LNFT
6.96
5025.12
100ft/COIL
104.95
944.55
LNFT
10.96
9633.84
300ft/COIL
749.95
2999.8
LNFT
16.59
11297.79
100ft/COIL
279.95
279.95
LNFT
22.26
3828.72
300ft/COIL
864.95
2594.85
LNFT
37.18
2974.4
100ft/COIL
294.95
294.95
LNFT
10.96
9633.84
EACH
0.39 11297.79
251.16
LNFT
16.59
LNFT
22.26
3828.72
EACH
0.88
105.6
LNFT
37.18
2974.4
EACH
2.16
401.76
EACH
3.26
198.86
EACH
9.27
342.99
EACH
5.1
188.7
EACH
19.57
391.4
EACH
9.27
342.99
EACH
26.14
182.98
EACH
19.57
391.4
EACH
66.92
267.68
EACH
26.14
182.98
EACH
66.92
267.68
Original
= $127,026
MH
Tot.Hours
Hours
TotalCost
Cost
MH
Tot.
Total
0.06
0.06
0.06
0.08
0.06
0.08
0.08
0.08
0.09
0.08
0.12
0.14
0.08
0.18
0.09
0.33
0.12
0.14
0.43
0.18
0.48
0.57
0.69
0.59
1.1
0.69
1.31
1.1
1.75
1.31
1.75
142 12573.89
138
9008
135.1 14303.93
70
7653.32
131
9059.8
97.1 12692.18
57.8
8788.44
68
6384.55
79.1
15066.97
94
10519.8
81.7 17044.69
24.1
5571.98
56
7074.85
14.4
4084.64
79.1 15066.97
211.2
12205.63
81.7 17044.69
24.1
51.8 5571.98
3043.27
14.4
89.3 4084.64
5484.1
34.6
2175.49
25.5
21.9 1814.79
1444.33
21.9
25.5 1668.26
1814.79
9.2
719.93
21.9
1668.26
7
690.21
9.2
719.93
88708.47
7
690.21
127026.05
PEX = $88,708
In conclusion, the remote manifold system
including PEX tubing is a feasible solution
The new design will increase
sustainability
The 354 man hours saved will
reduce the overall length of the
project
The design change will save $38,317
In summary, value engineering can be used to
help maintain or even gain a buildings
sustainable status
VE must be incorporated early and
often in the process to ensure the
best quality of the building
Both the CMU wall and remote
manifold with PEX tubing design
meet green criteria
By switching to the new designs
over $100,000 will be saved
Questions?