Civista Medical Center La Plata, MD 2006-2007 Thesis Presentation Thad Maugle Construction Management

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

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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

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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

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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

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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

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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

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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

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Step 1: Identify Type of

Construction Project Activity (Type A-D)

Step 2: Identify the

Patient Risk Group

ICRA Analysis

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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.

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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

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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

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Additional ICRA Provisions Unique to Civista

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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

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Wall Mount Configuration

Minimizes number of wall penetrations by running cable and wiring down from the ceilings instead of through the walls

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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.

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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

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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

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2nd Floor East Wing Sequencing – (2)Sequence 1, 2, 3, 6, 7, 8



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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

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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

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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

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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

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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%)

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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

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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

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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

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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

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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.

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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

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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

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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

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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

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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

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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 ???

Documents

Civista Medical Center La Plata, MD 2006-2007 Thesis Presentation Thad Maugle Construction Management