Greg Blatt Penn State Architectural Engineering Construction Management

Greg Blatt Penn State Architectural Engineering Construction Management April 12, 2004

901 New York Avenue Washington, D. C. Greg Blatt Construction Management

901 New York Avenue Washington, D. C. Greg Blatt Construction Management

901 New York Avenue Washington, D. C. Project Information Ø Class A Office Building Ø Cost: $54, 000 Ø Size: 580, 00 Square Feet Ø Construction Dates: August 2002 – October 2004 Ø Uses: Office space, street-level retail, underground parking garage, & a health club Greg Blatt Construction Management

901 New York Avenue Washington, D. C. Pour Sequencing Foundation Redesign LEED Certification Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Original Parameters • 9 pours per floor • Columns poured the day after the slab for each section FOUNDATION REDESIGN • Pour #1 for each floor was started after Pour #4 for the previous floor • Originally scheduled from May 20, 2003 to November 6, 2003 LEED Greg Blatt • 124 days on the schedule Construction Management

901 New York Avenue Washington, D. C. Pour Breaks POUR SEQUENCING FOUNDATION REDESIGN 7 8 5 4 3 2 1 6 9 LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Proposed Parameters • 9 pours per floor • Columns poured the day after the slab for each section FOUNDATION REDESIGN • Pour #1 for each floor was started after Pour #4 for the previous floor • Originally scheduled from May 20, 2003 to October 31, 2003 LEED • 119 days on the schedule • Durations changed on the lower floors to accelerate the schedule Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING FOUNDATION REDESIGN LEED Greg Blatt Comparison Level 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 Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Sequencing Conclusion • One week was saved due to the schedule acceleration. • Other trades can begin their work earlier. FOUNDATION REDESIGN • 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. LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. Pour Sequencing Foundation Redesign LEED Certification Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Foundation Redesign • Change from column footings to a mat foundation • Potential savings in the schedule FOUNDATION REDESIGN • Mat foundation will be more expensive (extra materials & labor) • Economical comparison LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Original Design • 146 Column Footings • 39 are combined footings FOUNDATION REDESIGN • Smallest Footing – 4’-6” x 21” • Largest Footing – 17’-0” x 17’-6” x 64” • 15, 000 psi soil bearing capacity LEED Greg Blatt • Scheduled for 35 days • Estimated Cost of $645, 966 Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Mat Foundation Design • Check for punching shear • Determine thickness for different strengths of concrete FOUNDATION REDESIGN • Estimate costs for each strength of concrete • Estimate time duration • Compare to column footing design LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING FOUNDATION REDESIGN LEED Greg Blatt Mat Foundation Design Concrete Strength (psi) Foundation Depth Cost 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 Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Mat Foundation Design • 6, 000 psi concrete foundation was the least expensive of the 4 options analyzed • Estimated to take 45 days to complete FOUNDATION REDESIGN LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. Foundation Comparison POUR SEQUENCING FOUNDATION REDESIGN Column Footings Mat Foundation Change Cost $645, 966 $ 1, 455, 999 + $ 810, 033 Duration 35 days 45 days + 10 days LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING FOUNDATION REDESIGN 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. LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. Pour Sequencing Foundation Redesign LEED Certification Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING FOUNDATION REDESIGN 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. LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING LEED Certification • LEED Rating Version 2. 1 • Rated: 26 – 32 points FOUNDATION REDESIGN • Silver: 33 – 38 points • Gold: 39 – 51 points • Platinum: 52 + points LEED Greg Blatt • Total of 69 points that can be earned Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING FOUNDATION REDESIGN LEED Greg Blatt Initial LEED Analysis LEED SECTION points earned / points possible Sustainable Site 6 / 14 Water Efficiency 1/5 Energy & Atmosphere 3 / 17 Materials & Resources 0 / 13 Indoor Environmental Quality 0 / 15 Innovation & Design Process 1/5 Total 11 / 69 Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING Suggestions • Dedicated Outdoor Air System (DOAS) • Construction Waste Management System FOUNDATION REDESIGN • Use of Local/Regional Materials • Additional Daylighting • Designated spots for carpooling LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING FOUNDATION REDESIGN LEED Greg Blatt LEED Analysis w/ Suggestions LEED SECTION points earned / points possible Sustainable Site 7 / 14 Water Efficiency 4/5 Energy & Atmosphere 4 / 17 Materials & Resources 6 / 13 Indoor Environmental Quality 9 / 15 Innovation & Design Process 4/5 Total 33 / 69 Construction Management

901 New York Avenue Washington, D. C. POUR SEQUENCING FOUNDATION REDESIGN 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. LEED Greg Blatt Construction Management

901 New York Avenue Washington, D. C. 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. Greg Blatt Construction Management

901 New York Avenue Washington, D. C. 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 & Staff Family & Friends Greg Blatt Construction Management

901 New York Avenue Washington, D. C. QUESTIONS Greg Blatt Construction Management