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Civista Medical CenterLa Plata, MD
2006-2007 Thesis Presentation
Thad Maugle
Construction Management
- La Plata, MD -
Presentation Outline
Project Overview Infection Control Risk Assessment Technical Analyses
Mechanical: Steam Turbine vs. PRV Electrical: Aluminum vs. Copper
Conductors Acknowledgement Questions / Comments
- La Plata, MD -
Project Overview Location: La Plata, MD Building Occupant: Civista Health, Inc. Scope
Addition: 122,864 SF Renovations: 36,303 SF
Occupancy & Function Institutional I-2 Medical Care
Size: 159,167 SF of total construction Number of stories above grade / total levels: 4 / 4 Dates of Construction: 12/1/04 - 8/1/07 (33 months) Total Project Cost: $ 43,941,344 Project Delivery Method: CM @ Risk w/ GMP
- La Plata, MD -
Project Overview (cont’d)
Existing Site Conditions
Foundation Augered CIP Concrete piles
Structure Elevated CIP Concrete
Building Envelope Precast Stone Masonry Units w/ Modular Face
Brick
- La Plata, MD -
Project Overview (cont’d)
Mechanical System Electrical System
480/277V: Lighting, Major Mech. Equip., Building Equip.
208/120V: Lighting, Small Mech. Equip., Small Building Equip.
Building Service: 15 kV service
- La Plata, MD -
Infection Control Risk Assessment
Problem: Civista requires an ICRA plan that is properly
sequenced. Goal:
Formulate an ICRA plan unique to Civista Sequence an area of renovations
Analysis Techniques: Overview of ICRA Formulate ICRA plan for Civista renovation
- La Plata, MD -
Background Infection Control Risk Assessment (ICRA)
A strategic plan intended to identify and alleviate potential risks associated with the air quality environment during the construction phase of a project
Interim Life Safety Measures (ILSM) A series of actions required to be taken to temporarily
compensate for hazards posed by existing Life Safety Code deficiencies or construction activities, allowing for safe execution of the ICRA.
American Institute of Architects (AIA) Guidelines for Design and Construction of Healthcare Facilities
Introduced ICRA in 2001 Joint Commission for Accreditation of Health Care
Organizations (JCAHO) Mandated ICRA in 2001
- La Plata, MD -
Implications of ICRA
Owner Responsible for budget and ICRA completion
prior to the commencement of work Construction Management Team
Preconstruction planning and implementation of the infection control measures
Monitoring, documentation, and quality control Trade Contractors
Abide by the provided infection control measures Monetary penalties may result otherwise
- La Plata, MD -
Step 1: Identify Type of
Construction Project Activity (Type A-D)
Step 2: Identify the
Patient Risk Group
ICRA Analysis
- La Plata, MD -
ICRA Analysis
Step 3: Match the
Patient Risk Group with the planned Construction Project Type to find the Class of Precautions or level of infection control activities required.
- La Plata, MD -
Suggested Infection Control Actions Dust proof plastic barrier with door and frame to be installed. Contains demo
debris and dust, and protects patients
Air vents inside the work area will be sealed with plastic sheeting
Dust mats to be placed at entrances and exits of work areas
Negative air pressure to be maintained within work area utilizing HEPA equipped air filtration units
Construction debris to be transported in tightly covered containers
Inside work area to be completely cleaned prior to removal of plastic barrier
After removal of plastic barrier, area to be cleaned again with disinfectant
All staff in the area to be briefed prior to the commencement of work
- La Plata, MD -
Suggested Interim Life Safety Measures
Forms submitted and approved.
Fire door exits to be maintained for clear access at all times.
Hospital’s existing life safety systems not to be interrupted.
Additional fire fighting equipment to be available.
Staff to be briefed prior to the commencement of work.
Install dust proof plastic barriers to contain demo debris and protect occupants
Properly cover loads of debris
Clean interior area enclosed by barriers
Remove temporary barriers upon completion
Clean and disinfect entire area upon removal of temporary barriers
- La Plata, MD -
Additional ICRA Provisions Unique to Civista
- La Plata, MD -
Decision Tree Invasive Work
Layout work plan Use containment Shield patients &
visitors Use dust mats Signage as needed Cover trash during
removal Type of Containment
1-14 days: Plastic Wall Affecting existing
utilities? Plan outages
- La Plata, MD -
Wall Mount Configuration
Minimizes number of wall penetrations by running cable and wiring down from the ceilings instead of through the walls
- La Plata, MD -
Outage Request Forms
Existing utilities and systems will be affected
(Ex.) Sheaves and belts on Air Handling Unit (AHU) #7 need replaced and upgraded
Affects occupied space being renovated
Requires schedule and approved system outage
Isolate areas - ventilation temporarily out of service
Highly sensitive at-risk patients may need to be moved to a more stable environment for the time being.
- La Plata, MD -
2nd Floor East Wing Sequencing
Risk Type C – work generates
moderate to high levels of dust
Patient Type Highest Risk
Description Additional Plumbing and
sprinkler piping required above ceilings in patient rooms of the 2nd floor
Sequencing will involve two rooms at a time
- La Plata, MD -
2nd Floor East Wing Sequencing - (1)Sequence 1, 2, 3, 6, 7, 8
General Trades Remove furniture Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Cut drywall for tie-ins Lay out piping on ceilings Cut drywall ceiling for piping Cut drywall ceiling in toilet room for sprinkler piping
and head Remove drywall debrisPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Clean entire rooms Remove plastic dust barrier Clean area
- La Plata, MD -
2nd Floor East Wing Sequencing – (2)Sequence 1, 2, 3, 6, 7, 8
General Trades Remove furniture Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Cut drywall for tie-ins Lay out piping on ceilings Cut drywall ceiling for piping Cut drywall ceiling in toilet room for sprinkler piping
and head Remove drywall debrisPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Clean entire rooms Remove plastic dust barrier Clean area
- La Plata, MD -
2nd Floor East Wing Sequencing – (3)Sequence 1, 2, 3, 6, 7, 8
General Trades Remove furniture Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Cut drywall for tie-ins Lay out piping on ceilings Cut drywall ceiling for piping Cut drywall ceiling in toilet room for sprinkler piping and
head Remove drywall debrisPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Clean entire rooms Remove plastic dust barrier Clean area
- La Plata, MD -
2nd Floor East Wing Sequencing – (4)Sequence 4 & 5
** Can be accomplished after normal hours without disturbance to staff
General Trades Remove supplies from the supply room Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Demo drywall ceiling in the supply room Remove drywall debris Install plastic covering on the walls and floors in rooms
to be worked that night Remove ceiling tiles as requiredPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Reinstall all ceiling tiles Remove plastic covering from walls and floors Remove plastic dust barrier Clean area
- La Plata, MD -
2nd Floor East Wing Sequencing – (5)Sequence 4 & 5
** Can be accomplished after normal hours without disturbance to staff
General Trades Remove supplies from the supply room Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Demo drywall ceiling in the supply room Remove drywall debris Install plastic covering on the walls and floors in rooms
to be worked that night Remove ceiling tiles as requiredPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Reinstall all ceiling tiles Remove plastic covering from walls and floors Remove plastic dust barrier Clean area
- La Plata, MD -
2nd Floor East Wing Sequencing – (6)Sequence 1, 2, 3, 6, 7, 8
General Trades Remove furniture Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Cut drywall for tie-ins Lay out piping on ceilings Cut drywall ceiling for piping Cut drywall ceiling in toilet room for sprinkler piping
and head Remove drywall debrisPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Clean entire rooms Remove plastic dust barrier Clean area
- La Plata, MD -
2nd Floor East Wing Sequencing – (7)Sequence 1, 2, 3, 6, 7, 8
General Trades Remove furniture Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Cut drywall for tie-ins Lay out piping on ceilings Cut drywall ceiling for piping Cut drywall ceiling in toilet room for sprinkler piping
and head Remove drywall debrisPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Clean entire rooms Remove plastic dust barrier Clean area
- La Plata, MD -
2nd Floor East Wing Sequencing – (8)Sequence 1, 2, 3, 6, 7, 8
General Trades Remove furniture Construct plastic dust barrier Install floor protection Install HEPA filters in both rooms Cut drywall for tie-ins Lay out piping on ceilings Cut drywall ceiling for piping Cut drywall ceiling in toilet room for sprinkler piping
and head Remove drywall debrisPlumbing Contractor Lay out piping on ceilings Core drill roof Install hangers and piping Perform pipe testingSprinkler Contractor Install hangers and piping Install sprinkler headsGeneral Trades Patch drywall walls and ceilings Finish paint Clean entire rooms Remove plastic dust barrier Clean area
- La Plata, MD -
Steam Turbine vs. PRV Problem:
Pressure Reducing Valve (PRV) used to reduce steam pressure.
Goal: Redesign pressure reducing equipment from PVR
to non-condensing backpressure steam turbine. Analysis Techniques:
Overview of steam turbine system Size equipment Conduct energy analysis Conduct cost analysis
- La Plata, MD -
Non-Condensing Backpressure Steam Turbine
Non-condensing (backpressure): Operates above or in excess
of atmospheric pressure Used where low steam loads
are required Steam passes over turbine
blades, spins turbine blade shaft which directly connected to an electrical generator, generates electricity
Low efficiencies (~15-35%)
- La Plata, MD -
Sizing the Steam Turbine
Given Variables Inlet Pressure (Pi) – 60 psig + 14.7 atm pressure = 74.7 Outlet Pressure (Po) – 10 psig + 14.7 atm pressure = 24.7 Total Capacity (m) – 3590 lb/hr Temperature of Steam (T1) – est. 300oF (227oF to 307oF) Efficiency Rate (n) – est. 20% (15 to 35%)
Find Power Rate: Q = m h
- La Plata, MD -
Sizing the Steam Turbine (cont’d)
Find Enthalpy Using Steam Tables hi = 269.8 BTU/lb ho = 1190 BTU/lb h = ho – hi = 920.5 BTU/lb
Q = m h = 3,635,975 BTU/hr Factor in Efficiency
Q x n = 3,635,975 BTU/hr x 0.20 = 727,197 BTU/hr Convert to kW
727,197 BTU/hr x [(1 kW) / (3412 BTU)] = 213.13 kW
** Equipment can now be sized according to kW output
- La Plata, MD -
Cost and Energy Analysis
Impractical to operate at full capacity
Assumed 40% max capacity during Summer
months (Jun – Oct): 85.25 kW 60% max capacity during Winter
months (Nov – May): 127.88 kW Chart would be most useful in the
presence of steam charts
- La Plata, MD -
Cost and Energy Comparison
5,759,158 kWh consumed $508,907.24
w/ Pressure Reducing w/ Pressure Reducing ValveValve
w/ Steam Turbinew/ Steam Turbine
5,044,064 kWh consumed $491,575.76
- La Plata, MD -
Cost and Energy Comparison
Steam Turbine estimated performance over 9 month period Saves over $17,000 Saves over 715,000 kWh Cycle produces no emissions Could be greater savings based on actual
efficiency of equipment and actual capacity used.
- La Plata, MD -
Aluminum vs. Copper Conductors Problem:
Civista wired with copper. Reliable but expensive.
Goal: Redesign copper feeders with Aluminum Alloy
(AA-8000 series) alternative. Analysis Techniques:
Compare material properties Resize feeders and conduit Conduct cost analysis Conduct schedule comparison
- La Plata, MD -
Background Copper shortage – 1965 Aluminum was a cheaper alternative Steel receptacle screws replaced brass Aluminum to steel connection far more
sensitive than copper to brass Thermal expansion and creep
Oxidation – Resistance - hot Corrosion
Faulty connections, even fires resulted No contractor wants to take the risk
- La Plata, MD -
Material Composition Previous Aluminum Classifications
AA-1350 EC (Electrical Conductor) aluminum 99.5% pure aluminum
Current Aluminum Alloy Classification AA-8000 series 0.001 to 0.3% zinc 0.001 to 0.03% titanium 0.001 to 0.5% manganese 0.03 to 0.4% silicon Combination yields excellent strength & resistance to
corrosion
- La Plata, MD -
Problems / Solutions
Improper Installation Use appropriate tools (i.e. stripping wire) Wrap wire in a clockwise manner (i.e. tightens
while being screwed in placed) Sufficiently tightened (i.e. adequate contact area
at the connection) Oxidation / Corrosion
AA-8000 series - thermal expansion and creep similar to copper
Proper tightening Oxide inhibitor
- La Plata, MD -
- La Plata, MD -
- La Plata, MD -
- La Plata, MD -
Cost and Schedule Comparison
Saves over $8,000 in conductor and conduit costs of feeders
Saves 4 days in construction time Savings would be greater when
including branch circuits
- La Plata, MD -
Acknowledgements AE Faculty
Dr. Michael Horman Dr. James D. Freihaut Professor Richard Mistrick Professor Kevin Parfitt
Industry Contacts Ben Alexander - Gilbane Building Co. Greg Dunkle - Gilbane Building Co. Mike DuLaney - Gilbane Building Co. Melanie Townsend - Gilbane Building Co. Dan Kerr - McClure Company Gary Hall - Civista Health, Inc.
Fellow AE Students Alexis Kreft David Potchek Andrew Rhodes
...and most importantly, family and friends
Questions ???