Keith Beidel Mechanical Option Centre Community Hospital East Wing Expansion State College, PA 9/30/02

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1 BUILDING AND PLANT ENERGY ANALYSIS REPORT: Part A Keith Beidel Mechanical Option Centre Community Hospital East Wing Expansion State College, PA 9/30/02 Executive Summary Centre Community Hospital East Wing Expansion is a 48,000 square foot hospital addition located in State College, PA. After comparing this building to ASHRAE Standard 90 I found that all building construction assemblies are compliant except for the floors between occupied spaces. Analyzing this building with a LEED Analysis I found that it only received seven point, not enough to be LEED Certified. All mechanical systems and equipment in this building have a budget of $1,650,000, which is equivalent to $34.38 per square foot. All mechanical equipment is spaced properly and has enough room to allow for easy accessibility and serviceability. 1

2 LEED GREEN BUILDING CERTIFICATION ANALYSIS The LEED Certification applies only to commercial, institutional, and hise-rise residential new construction and major renovations. Centre Community Hospital East Wing Expansion cannot be analyzed by this certification. Even though this is true I analyzed it as if it were anyhow. After reviewing and analyzing all 70 categories I found that my building would be awarded only 7 total credits (see attached checklist). These points are not nearly enough to obtain a LEED Certified status. One point was received under the Sustainable Site and s and Resources sections, and five points were received under the Indoor Environmental Quality. Reliability and function took precedence over energy and Green Design in the design of this building. 2

3 ASHRAE STANDARD 90 COMPLIANCE According to Table D-1 of ASHRAE Standard 90, State College, Pennsylvania is classified as a B-17 location. From this chart I went to table B-17 for the requirements my building is required to meet to satisfy the standard. The Following are the requirements listed: Nonresidential Opaque Elements Minimum Assembly Maximum Roof Insulation Entirely Above Deck R-15 ci U Wall, Above Grade Steel Framed R-13 + R-3.8ci U Wall, Below Grade Below Grade Wall NR C Floors Steel Joist R-19 U Slab-On-Grade Floor Unheated NR F Opaque Doors Swinging - U

4 ACTUAL R AND U VALUES Wall Above Grade Outside Air Film " Face Brick 0.44 Air Space /2" Gypsum Board " fiberglass insulation /8" Gypsum Board 0.56 Inside Airfilm 0.68 Total R Value = U Value = Roof 2"-20 Gage Composite Deck " Lightweight Concrete 2.20 Insulation Board Roofing 2.80 Total R Value = U Value = Opaque Doors Floor 2"-20 Gage Composite Deck " Lightweight Concrete 1.80 Total R Value = 2.30 U Value = Opaque Doors Total R Value = U Value = Wall Below Grade 8" Concrete Block 1.11 Board Insulation Air Space /8" Gypsum Board 0.56 Total R Value = C Value =

5 Opaque Elements Roof Insulation Entirely Above Deck Wall, Above Grade Actual R Value Steel Framed 22.3 Wall, Below Grade Minimum R- Value Actual U or C Value Assembly Maximum Compliant 23.9 R-15 ci U Yes R-13 + R- 3.8ci U Yes Below Grade Wall NR C Yes Floors Steel Joist R U No Opaque Doors Swinging U Yes According to the chart the wall, roof, and door assemblies ARE all within compliance of ASHRAE Standard 90. The floor assembly although DOES NOT comply with the standard. ASHRAE STANDARD 90 LIGHTING COMPLIANCE According to ASHRAE Standard 90 Section 9 Exception c, all interior lighting systems included in Centre Community Hospital East Wing are exempt from Standard 90 because they are specifically designed as required by a health and life safety statue. All exterior lighting systems in Centre Community Hospital East Wing comply with ASHRAE Standard Exterior Lighting Control. There is a photo sensing system supplied to all exterior lights to activate lights when there in not sufficient daylight present. 5

6 MECHANICAL COSTS MECHANICAL COSTS Quantity Unit Unit Cost Cost/Bldg SF Line Item Cost Building Addition 48,000 sf 07 Mechanical Medical Gases 25,000 sf 8.0 $4.17 $200,000 HVAC 48,000 sf 25.0 $40.00 $1,200,000 HVAC equipment 1 allow 250,000.0 $250,000 Total $34.38 $1,650,000 According to the bidding documents provided the overall first cost of the mechanical systems is $1,650,000 which is equivalent to $34.38 per square foot of floor space. 6

7 LOST RENTABLE SPACE DUE TO MECHANICAL SYSTEMS Due to the fact that my building is a hospital I cannot equate mechanical system spaces with lost rentable space. This building is not being rented to outside businesses nor can it be. I will look at the area occupied by mechanical spaces and make a correlation to what is being lost or given up due to these areas. Lost Floor Area Due to Mechanical Systems Space Floor Dimensions (ft) Area (SF) Mech/Elect Equip Basement 27 x Mech/Plumb Tunnel Basement 11 x Stilt Space Ground 41 x Exhaust Chase Ground 8 x Relief Chase Ground 8 x Mech Room Expansion Ground 8 x Supply Chase Ground 7 x 8 56 Exhaust Chase First 8 x Supply Chase First 7 x 8 56 Relief Chase First 8 x Totals Basement 2376 Ground 2373 First 288 Total 5037 The total lost space due to mechanical rooms and mechanical chases is 5037 square feet. Most of the area is due to the mechanical/electrical room and tunnel in the basement, and the stilt space area on the ground floor. It is not is simple solution to suggest a lost rental space value to these spaces, due to the fact the space would be worth whatever would be placed in these areas instead. If this area had been simply deleted from the overall square footage of the building during the design stage a savings of $814,078 ($ per square foot) would be obtained. To take a different look at the savings you could justify that another Intensive Care Unit Room could be added on the first floor if not for the floor space taken by the mechanical systems. Assuming this room is filled 50% of the time, and with a crude estimate of medical bills of $1,000 dollars a day, a profit of $182,000 would be earned. This may be an unrealistic earnings considering not all of the money would be profit, but the main idea is that something useful and profitable could be put into these spaces. 7

8 LOST RENTABLE SPACE DUE TO MECHAICAL SYSTEMS CONT. A majority of the air handlers and supplemental equipment is placed on the roof. No credit can be taken for the area that this equipment consumes because nothing could be place in those areas anyhow. The mechanical stilt space located on the ground floor would be very valuable floor spaces if not for the equipment located in it. Designed as an open air stilt space for air handlers, it would be more valuable if enclosed and used for other functions. It would be easily accessible, due to the fact that it is on the ground floor, and would be more architecturally and acoustically pleasing. 8

9 MECHANICAL EQUIPMENT ACCESSIBILITY AND SERVICABILITY All mechanical equipment on the roof is very accessible and serviceable. A elevator or stairwell will take you directly to the roof, therefore no roof hatches will have to be used. All equipment on the roof is spaced generously apart. This will allow them to be easily serviced. The three air handlers and condensers in the stilt space are also accessible and serviceable. AHU 63 and 64 are stacked on each other to provide enough room to allow room for maintenance. Egress routes in this area are not an issue because it is an open air space, which is easily accessible to the outdoors. An expansion tank, three pumps, and a heat exchanger is the only mechanical equipment located in the mechanical/electrical room in the basement. The room is large enough to allow this items to be spaced properly apart. Extra space has been allotted in this room for future expansion, so as of now there is plenty of room available. 9