greg blatt penn state architectural engineering construction management april 12, 2004
TRANSCRIPT
![Page 1: Greg Blatt Penn State Architectural Engineering Construction Management April 12, 2004](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649f135503460f94c2803f/html5/thumbnails/1.jpg)
Greg BlattPenn State
Architectural EngineeringConstruction Management
April 12, 2004
![Page 2: Greg Blatt Penn State Architectural Engineering Construction Management April 12, 2004](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649f135503460f94c2803f/html5/thumbnails/2.jpg)
901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
![Page 3: Greg Blatt Penn State Architectural Engineering Construction Management April 12, 2004](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649f135503460f94c2803f/html5/thumbnails/3.jpg)
901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
![Page 4: Greg Blatt Penn State Architectural Engineering Construction Management April 12, 2004](https://reader035.vdocuments.us/reader035/viewer/2022081603/56649f135503460f94c2803f/html5/thumbnails/4.jpg)
901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
Class A Office Building
Cost: $54,000,000
Size: 580,00 Square Feet
Construction Dates: August 2002 – October 2004
Uses: Office space, street-level retail, underground parking garage, & a health club
Project Information
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901 New York AvenueWashington, D.C.
Pour Sequencing
Foundation Redesign
LEED Certification
Greg Blatt Construction Management
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Original Parameters
• 9 pours per floor
• Columns poured the day after the slab for each section
• Pour #1 for each floor was started after Pour #4 for the previous floor
• Originally scheduled from May 20, 2003 to November 6, 2003
• 124 days on the schedule
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Pour Breaks
9
8
7
6
5 4 3 2 1
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Proposed Parameters
• 9 pours per floor
• Columns poured the day after the slab for each section
• Pour #1 for each floor was started after Pour #4 for the previous floor
• Originally scheduled from May 20, 2003 to October 31, 2003
• 119 days on the schedule
• Durations changed on the lower floors to accelerate the schedule
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
ComparisonLevel Original Duration
(days)Proposed Duration
(days)Comparison (days)
Second 36 33 -3
Third 24 23 -1
Fourth 23 22 -1
Fifth 22 22 0
Sixth 22 22 0
Seventh 23 22 -1
Eighth 23 22 -1
Ninth 22 22 0
Tenth 22 22 0
Eleventh 22 22 0
Roof 19 19 0
Total 124 119 -5
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Sequencing Conclusion
• One week was saved due to the schedule acceleration.
• Other trades can begin their work earlier.
• This allows the occupants to move into their spaces earlier.
• The owner will be able to start to make money on building at an earlier date.
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901 New York AvenueWashington, D.C.
Pour Sequencing
Foundation Redesign
LEED Certification
Greg Blatt Construction Management
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Foundation Redesign
• Change from column footings to a mat foundation
• Potential savings in the schedule
• Mat foundation will be more expensive (extra materials & labor)
• Economical comparison
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Original Design
• 146 Column Footings
• 39 are combined footings
• Smallest Footing – 4’-6” x 4’-6” x 21”
• Largest Footing – 17’-0” x 17’-6” x 64”
• 15,000 psi soil bearing capacity
• Scheduled for 35 days
• Estimated Cost of $645,966
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Mat Foundation Design
• Check for punching shear
• Determine thickness for different strengths of concrete
• Estimate costs for each strength of concrete
• Estimate time duration
• Compare to column footing design
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Mat Foundation DesignConcrete
Strength (psi)Foundation
DepthCost
3,000 5’-7” $ 1,806,517
4,000 5’-2” $ 1,671,703
5,000 4’-10” $ 1,563,851
6,000 4’-6” $ 1,455,999
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Mat Foundation Design
• 6,000 psi concrete foundation was the least expensive of the 4 options analyzed
• Estimated to take 45 days to complete
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Foundation Comparison
Column Footings
Mat Foundation
Change
Cost $645,966 $ 1,455,999
+ $ 810,033
Duration 35 days 45 days + 10 days
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Foundation Conclusion
• Mat foundation costs approximately $810,000 more than the column footings.
• Mat foundation is estimated to take 10 more days to complete than the column footings.
• Overall, the column footings were a better choice as a foundation system for this project.
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901 New York AvenueWashington, D.C.
Pour Sequencing
Foundation Redesign
LEED Certification
Greg Blatt Construction Management
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
LEED Certification
• Analyze the project to check if it meets the minimum LEED Certification requirements.
• If it does not meet those requirements, suggest ways to get the project to an acceptable certification level.
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
LEED Certification
• LEED Rating Version 2.1
• Rated: 26 – 32 points
• Silver: 33 – 38 points
• Gold: 39 – 51 points
• Platinum: 52 + points
• Total of 69 points that can be earned
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Initial LEED Analysis
LEED SECTION points earned / points possibleSustainable Site 6 / 14Water Efficiency 1 / 5Energy & Atmosphere 3 / 17Materials & Resources 0 / 13Indoor Environmental Quality 0 / 15Innovation & Design Process 1 / 5Total 11 / 69
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
Suggestions
• Dedicated Outdoor Air System (DOAS)
• Construction Waste Management System
• Use of Local/Regional Materials
• Additional Daylighting
• Designated spots for carpooling
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
LEED Analysis w/ Suggestions
LEED SECTION points earned / points possibleSustainable Site 7 / 14Water Efficiency 4 / 5Energy & Atmosphere 4 / 17Materials & Resources 6 / 13Indoor Environmental Quality 9 / 15Innovation & Design Process 4 / 5Total 33 / 69
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
POUR SEQUENCING
FOUNDATION REDESIGN
LEED
LEED Conclusion
• The original design would not meet LEED Certification requirements.
• By implementing the suggested items, 33 credits were obtained for the certification process.
• The suggested items led to a rating of Silver for the project.
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
Conclusions
Pour Sequencing – Accelerated the schedule by 1 week
Foundation Redesign – Column footings are a better choice than a mat foundation
LEED Certification – Changes could be implemented to reach a minimum certification level.
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
THANK YOU
Alison Starner – Clark Construction
Marshall Singh – Clark Construction
Cathy Barus – Clark Construction
Jon Kolbe – Clark Concrete
Frank Schultz – Hensel Phelps
Walt Schneider – AE Faculty
AE Faculty & Staff
Family & Friends
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901 New York AvenueWashington, D.C.
Greg Blatt Construction Management
QUESTIONS