Ø Ù Ú à Ù á Ú â Û à Ü ã ã Ý ä Þ ß â à á Û å ä ä å æ ç ã April 23, 2013 Mr. David Moore, AIA McMillan-Pazdan-Smith Architecture 200 East Broad Street, Suite 300 Greenville, South Carolina 29601 RE: Hunter Library Master Plan Western Carolina University SW # 0540-05-00-13 Dear Mr. Moore: McMillan-Pazdan-Smith Architecture retained Stanford White, Inc. to provide master plan level information for the proposed Hunter Library Renovation project at Western Carolina University. We reviewed available as-built documentation, toured the building and performed a cursory assessment of the building’s fire suppression, plumbing, HVAC and electrical system to provide basic information for a proposed comprehensive renovation. Existing Conditions Hunter Library’s plumbing, HVAC and electrical systems are currently operational; however, the system components are for the most part past their typical useful lifespan and should be replaced. The building does not have a fire suppression sprinkler system. Scope of Work The proposed improvements of Hunter Library are anticipated to require a significant renovation to the existing building. Based on this scope, we suggest the following system replacements and modifications be considered when establishing the project’s construction budget: 1. Add wet-pipe sprinkler system per NFPA 13. 2. Replace complete plumbing system including new below slab sanitary sewer and storm water piping. 3. Replace HVAC system with new including: a) Multiple water-cooled chillers and cooling towers with constant speed primary pumping b) Steam to heating water converters c) Variable speed secondary pumping d) Single-zone central station air handlers for large open spaces e) Variable volume central station air handlers with fan-powered and single-duct VAV boxes with reheat coils for classrooms, offices and support spaces f) Replace most ductwork; however low pressure ductwork in the open stack areas could be reused if it fits within the architecture g) DDC controls 4. Replace or modify electrical systems including: a) Modify electrical service switchgear b) Replace about 50% of secondary distribution equipment and feeders c) Replace indoor, egress and exit discharge lighting in renovated areas d) Modify and expand fire alarm system and replace devices in renovated areas e) Replace electrical devices in renovated areas f) Replace data cabling and outlets in renovated areas 5. Replace/add domestic and fire protection water service lines from campus main and backflow prevention. 113 è é ê ð é ñ ê ò ë ð ì ó ó í ô î ï ò ð ñ ë õ ô ô õ ö ÷ ó 6. Replace steam and condensate piping in shallow trench concrete tunnel system to campus main with new 8'x12' manhole. 7. Replace electrical service transformers and feeders from nearest campus distribution switch. 8. Replace generator and standby power distribution equipment. Opinion of Cost: We would expect the range of costs, not including GC mark-ups, general conditions or phasing penalties, to be as follows: Fire Protection Plumbing HVAC Electrical Data and A/V $3.50 - 4.50/SF $4.50 - 6.50/SF $30.00 – 35.00/SF $20.00 – 24.00/SF $1.50 – 2.50/SF Design Considerations: In addition to the architectural and planning goals and concerns of the proposed project, please consider the following when determining the project’s master plan: 1. The general construction phasing should take into account the existing air handler zoning. Where a construction phase must sub-divide an air handling zone, the existing air handler should be modified to be kept operational for the remaining area. The new air handler might need to be located elsewhere. This might or might not be significant depending on the scope of work. 2. The new air handlers likely will not to fit in the all the same mechanical spaces. New and/or modified spaces should be provided in the new plan. 3. The most efficient way to replace the PME systems in phases will be to consider starting closest to the incoming utility services/main mechanical and electrical rooms and progress the phases outward. Expect the cost to increase if the renovations start further from the services or the phases are not adjacent. 4. The chilled water plant in Hunter Library also serves Hoey Auditorium, McKee Building and Stillwell Building. It is crucial that chilled water plant replacement be designed to minimize downtime to all four buildings. Consider establishing a new chiller room so the new plant equipment can be constructed in parallel. A separate plant building could also be considered. The existing space within the building could be used for air handling equipment and/or recaptured for program storage space. Parking Lot #37, where the cooling towers are currently located, or the land adjacent to the access road between Hunter and the Natural Science Building appear to be possible locations. In the bigger picture, if the Natural Sciences Building is scheduled for demolition, then a new chiller plant could serve its replacement as well. Thank you for including us on this exciting project. Sincerely, STANFORD WHITE, Inc. Kenneth R. Wehner, PE Associate M:\Clients\Western Carolina University\0540-04-00-13 Campus Master Plan\2013-0423 WCU Hunter Library Master Plan PME Letter.docx 114 ø ù ú ù ú û ü ý þ ÿ û 115