Sustainable Design Strategies for Health Care Center in Dauphin County, PA

1. The Health Care Center Dauphin County, PA Ken Lorenz Penn State University Architectural Engineering Construction Management April 17, 2007

2. This presentation focuses on a research topic affecting the industry and two breadth analyses Value Engineering and Sustainability CMU Wall Design PEX Tubing Design

3. The Health Care Center will provide medical and psychological care to the students of a local boarding school Location Dauphin County, PA Project Size 80,000 SF – new construction 20,000 SF - renovation Occupancy Health care Structural Steel Frame

4. The integrated team will work together to deliver and meet all expectations Project Team Owner CM Architect Structural Engineers MEP Engineers Project Cost $25 Million Project Duration August 2006 – August 2008 LEED Certified

5. Research Topic Value Engineering and Sustainability CMU Wall Design PEX Tubing Design

6. What is Value Engineering (VE) ? Value engineering is a systematic effort to find less costly ways to meet the Owner’s needs in the building without sacrificing the scope, quality, aesthetics, operating costs or long term maintenance and replacement costs.

7. It is important to understand the VE process when evaluating a buildings alternatives Information Gathering Analysis Creative Brainstorming Evaluation Recommendation Implementation

8. It is important to understand the VE process when evaluating a buildings alternatives Integrated Team Documenting and Auditing Performance Evaluations

9. Conceptual planning, design, and construction are phases where sustainability can be greatly influenced by value engineering Conceptual Planning Design Construction

10. Who should be involved in the VE process? Owner Project Team Architect Structural Engineers Mechanical Engineers Civil Engineers Construction Manager 3rd Party Consultants Energy Engineers Commissioning Agent

11. The conceptual planning phase is where decisions determine whether or not the owners requirements can be met by an addition, renovation, or new construction Site Energy Materials Water Indoor Environment Quality Operation & Maintenance

12. VE can be used to analyze sustainable alternatives in the design of the building Contract Site Energy Materials Water Indoor Environment Quality Operation & Maintenance

13. The biggest challenge during the construction phase is managing changes that result from change in scope, errors & omissions, unforeseen conditions, etc. Site Energy Materials Water Indoor Environment Quality Operation & Maintenance

14. To conclude, it is important to understand what VE is and what is involved in the process to obtain the most sustainability for a building Be familiar and understand the information gathering, analyzing, creative brainstorming, evaluating, and implementation Form an integrative team, document everything, and set performance measures for green objectives Start VE early in the process and continue throughout focusing on where sustainability can be influences in the site, energy, water, materials, indoor environment quality, operation & maintenance, and contracts

15. Structural Breadth Topic Value Engineering and Sustainability CMU Wall Design PEX Tubing Design

16. The original design has a sixteen foot concrete wall around the lower half of the south addition CMU Wall?

17. STAAD Pro was used to determine the roof loads acting on the wall Assuming Load acting on the wall = 1.5 kips

18. Empirical design for concrete masonry walls was used to determine the CMU size Assuming Empirical Design Weight of wall = 100 psf Height (16’) / Thickness (t) = 18 Solve for t, t = 10.667 100 psf x 16’ = 1.6 kips Use 12 inch CMU!!! Total load acting on foundation = 1.5 +1.6 = 3.1 kips 3.1 kips < 9.05 kips

19. 12 inch CMU wall design Retention wall .364 in-K/ft < 3 in-K/ft

20. Thermal resistance comparison between the concrete and CMU design CMU wall will allow less heat loss due to heat transfer

21. Cost comparison between both designs A total savings of $64,718

22. In conclusion, the 12 inch CMU wall is a feasible solution 12 CMU is structurally sound By having a higher R-value, CMU wall maintains sustainability CMU will save $63,718

23. Mechanical Breadth Topic Value Engineering and Sustainability CMU Wall Design PEX Tubing Design

24. The Health Care Center’s domestic water supply is a typical branch plumbing system using copper piping PEX tubing design?

25. PEX is cross-linked polyethylene, originally used in residential and commercial buildings for radiant heating Advantages Ease of Installation Durability Cost Effective Energy Efficient Noise Reduction

26. A remote manifold system will be the new design for the domestic water supply Supplies water directly to fixture Less Fittings during installation Remote Manifold

27. Remote Manifold Design 1st Floor 1st Floor 2nd Floor

28. Cost comparison between both designs Original = $127,026 PEX = $88,708 Total Savings = $38,317 Savings 354 man hours

29. In conclusion, the remote manifold system including PEX tubing is a feasible solution The new design will increase sustainability The 354 man hours saved will reduce the overall length of the project The design change will save $38,317

30. Both the CMU wall and remote manifold with PEX tubing design meet green criteria By switching to the new designs over $100,000 will be saved In summary, value engineering can be used to help maintain or even gain a buildings sustainable status VE must be incorporated early and often in the process to ensure the best quality of the building Questions?