1. Construction Management Option
Andrew J. Hickey
Construction Management Option
12/9/2018

2. William Penn High School
Location: New Castle, DE
Total Building Size: 2 Floors, 556,200 sq ft
Project Cost:
Phase I - $6,330,272
Phase II - $2,766,58
Phase III - $3,874,341
Construction Dates:
Phase I – June ’02-August ’02
Phase II – June ’03-August ’03
Phase III – June ’04-August ’04
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3. Project History Built in 1958
Addition built onto the school in 1973 which doubled the size
Currently the largest high school in Delaware
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4. Project Team Owner – Colonial School District
Architect – Tetra Tech, Inc.
MEP Engineers – Furlow Associates
General Contractor – Ernest DiSabatino & Sons
Mechanical Contractor – I.D. Griffith
Electrical Contractor – Creedon Controls
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5. Topics of Discussion Asbestos Abatement Alternatives
Schedule Acceleration & Site Layout
Temporary Lighting Design
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6. Project Goals
To convince the parents and administration of the Colonial School District of the safety and practicality of asbestos encasement
To save the school district money by accelerating the project schedule by three months
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7. Asbestos Abatement Alternatives
Currently Performing Asbestos Removal
Total Cost = $903,949
Possible Alternatives
Asbestos Encasement
Area Closeoff
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8. Description of Asbestos
Microscopic Bundles of Fibers
Friable vs Non-Friable
Possible diseases stemming from Asbestos:
Emphazema
Ensephalitis
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9. Description of Asbestos
Asbestos is found in:
Floor and ceiling tile
Insulation
Fireproofing
Cement
Asbestos does not become a hazard until the materials are disturbed or damaged
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10. Asbestos Locations – 1st Floor
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11. Asbestos Locations – 2nd Floor
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12. Asbestos Removal
Complete removal & replacement of asbestos containing materials
Area must be sealed off in an airtight enclosure until all asbestos containing materials are removed and the air quality is found to be suitable for occupation
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13. Asbestos Removal
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14. Asbestos Encasement Description: Total Cost for Asbestos Encasement:
A plastic resin which covers the asbestos containing materials
Total Cost for Asbestos Encasement:
$229,400
Sealant does not last forever
Global Encasement offers a 20 year warranty
Encasement costs will equal removal in 100 years
Schedule for Asbestos Encasement:
Takes 1/3 of the time required for Removal
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15. Asbestos Encasement Costs
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16. Comparison between Methods
Safety:
Removal is thought as safest method
New Jersey DHSS found that after removal, airborne asbestos levels remain at the level before removal and in some cases are elevated by as much as 45%
The EPA has recently included asbestos encasement as an acceptable asbestos abatement method
Encasement does not release fibers into the air
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17. Comparison between Methods
Schedule
Removal - Fourteen Weeks
Other contractors cannot work in the same area
Encasement – Six Weeks
Other contractors can work in the same area
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18. Benefits of Asbestos Encasement
Decreased risk of Adverse health effects
A 75% lower initial cost of $229,400
Added protection for the finish of floors
No adverse environmental impact
12/9/2018

19. Schedule Acceleration & Site Layout
Current Schedule:
Phase I – June ’02-August ’02
Phase II – June ’03-August ’03
Phase III – June ’04-August ’04
Reduced Schedule
Phase II – June ’03-August ‘03
12/9/2018

20. Reasons for Schedule Acceleration
Reduced cost due to less general conditions
Project bid out as two-shift, six day a week
Daily work logs show that only mechanical & electrical contractors worked both shifts
Accelerated schedule will force all contractors to work both shifts
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21. 1st Floor Work Flow Plan
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22. 2nd Floor Work Flow Plan
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23. Comparison Between Schedules
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24. Downfalls of Two-Shift Six Day Work
Studies have shown marked decreases in output by contractors working overtime for several weeks.
Production efficiency for contractors working 8 hour workdays six days a week decreases from 100% to 90%.
2nd shift must take time to find out what work the 1st shift completed
Superintendents are essential to two-shift work
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25. 1st Phase Site Plan
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26. 2nd Phase Site Plan
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27. Temporary Lighting Design
Two-Shift Work
Half of the contractors will be working at night
Temp lighting needed to provide a safe and productive work environment
Renovation
Walls already in place
Calculations need to be provided for each room
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28. Lighting Take-Off Materials: Total Cost Materials & Labor:
60 Total 20A Circuit Breakers
W Lamps X 2 (Original + 1 Change)
571 Total Lamp Guards
571 Total Pig Tail Sockets
12,000’ Total Romex
1,142 Total Wire Connectors
Total Cost Materials & Labor:
$71,937
Total Cost Power for Temp Lighting:
$7,171
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29. 1st Floor Temporary Lighting Plan
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30. 2nd Floor Temporary Lighting Plan
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31. Conclusions / Recommendations
Accelerate the project schedule by three months and perform asbestos encasement
Provides a safer environment for the faculty and students
Saves the district $848,235 over the original schedule
All contractors will be off of school grounds in only six months
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32. Credits / Acknowledgements
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33. Thank you
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