DRAFT CONCEPT DESIGN REPORT UNIVERSITY OF CALGARY ...

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8.3 Mechanical � OVERVIEW This system description outlines the mechanical systems proposed for the expansion of the existing University of Calgary MacKimmie Library. Its intent is to define the scope and nature of the heating, ventilation, cooling, plumbing, fire protection and building automation systems to be provided. The mechanical systems for all three buildings require complete replacement as noted in the Condition Assessment Report. Therefore, complete replacement of plumbing and heating systems provided the opportunity to update these systems to efficient designs. All mechanical systems will be updated to provide reliable and energy efficient service for the next 50 years. Codes and Standards The mechanical systems will be designed and installed to comply with the latest editions of the following codes as applicable. Alberta Building Code 1997 Canadian Plumbing Code 1997 N.F.P.A. Codes W.C.B. Regulations Canadian Gas Code CGBA149.1 M89 CSA Standards Canadian Fire Code Local Building By-Laws In addition to the above, the mechanical systems will be designed to comply with the applicable standards issued by: ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers Inc.) ASPE (American Society of Plumbing Engineers) SMACNA (Sheet Metal and Air Conditioning Contractors National Association) The building is also being designed to meet both: The new building energy performance will be a minimum of 21% better than an equivalent building designed to meet the Canadian Model National Energy Code for Buildings. The building energy performance will also achieve a minimum performance of 8% better than ASHRAE 90.1-2007. The goal will be to achieve energy performance much greater than the minimums, which will be verified by the Energy Modelling process. The Canadian Green Building Council’s Leadership in Energy and Environmental Design (LEED) Gold standard. It is anticipated the LEED Canada NC Version 2.0 will be released prior to design of these renovations, which will provide revised point matrices, new point definitions, and additional opportunities. Design Criteria Indoor Design Conditions Winter: 21ºC, 30% minimum humidification Summer: 23ºC, maximum 60% humidity, typical 40-45%. Outdoor Design Conditions Winter: -33ºC (1%) Summer: 29ºC db, 17ºC wb (2½%) Ventilation Rates Ventilation rates shall be in accordance with ASHRAE 62, Current Edition. Controls All building controls will be upgraded to a full DDC control system, based on the based building control contractor Siemens. All pneumatic controls will be deleted and replaced by new electronic controls that will provide substantially improved controllability for the system. Energy metering as per U of C standards will be provided for chilled water and heating water systems. It is intended that LEED IPMPV credit requirements will be pursued to provide energy monitoring and confirmation of energy performance. � TOWER Site Services The building is served by a 200mm (8”) dia. sanitary sewer service and a 300mm (12”) dia. storm sewer service connected to manholes on the mains to the East. The building sanitary and storm sewer services are cast iron piping with hub and spigot joints. A 150 mm (6”) dia. domestic water service and chilled water is provided through the campus tunnel piping system network. These services are adequate to support the renovated building. Plumbing The plumbing piping systems will be completely replaced including domestic water lines, sanitary lines, and storm water lines. Plumbing fixtures will be water conserving, good commercial grade. Water closets will be low flow, dual-flow flushometer type. Urinals will be 0.1 gallon per flush models that provide a slight cleaning affect to the urinal surfaces. Faucets will be low flow and will be infra-red activated. Sanitary and storm drainage will be provided throughout in accordance with the Plumbing Code. Domestic hot water will be generated from the hot water system by the use of two domestic hot water heat exchangers. Domestic hot and cold water will be supplied to all fixtures with the exception of the toilets. River process water will be used for toilet flushing. Heating Heating systems will be completely replaced and will generally consist of radiant panels since high temperature heating water is readily available from the Co- Generation Plant. Standard entrance heaters will be provided at all entrances. The backside of the radiant panels will be used as a light shelf element where appropriate. Two new redundant primary high temperature hot water to low temperature hot water heat exchangers will be provided in the vault. A new high temperature hot water to steam generator will also be provided to serve humidification needs of the building. Ventilation and Cooling The recommended solution for cooling and ventilation of the Tower building is an Active Chilled beam system. A dedicated outdoor air unit complete with a heat wheel will provide ventilation, dehumidification, filtration and primary air supply for the chilled beams. This unit will supply sufficient primary air to drive the chilled beams, which will typically exceed the ASHRAE 62 minimum values. LEED recognizes that exceeding ASHRAE minimum values by 30% can increase the CONCEPT DESIGN REPORT UNIVERSITY OF CALGARY MacKimmie Tower and Block I Repurposing and Renewal 8. CONCEPT DESIGN overall ventilation effectiveness. Providing a larger ventilation unit will also provide the University flexibility for program or space use changes. Active chilled beams will be located throughout all typical office floors and will be supplied from a tempered chilled water loop. The chilled beams will be mounted on the underside of the concrete structure as tight to the underside as possible, generally at the lighting elevation. Primary ductwork and chilled water lines will extend radially from ring mains located in the central exit corridor to provide a neat installation. The 6 th floor area will be provided with displacement ventilation compartmental units. Displacement ventilation diffusers will be located in the meeting room walls to provide cooling and ventilation. High overhead returns will return high level heated air back to the compartmental units. The new envelope should either be a high performance envelope or a double façade. The ideal envelope would be a double façade with motorized exterior 50
window shades located in the interstitial space. This solution allows the window shades to be protected from the wind and prevents the majority of direct solar gain from entering the occupied space. The MacKimmie Tower allows the provision of a double façade system without requiring separate framing, which may make the system economical. The double façade will be ventilated by low level operable dampers and a relief fan at the top. Pre-heated outdoor air will be directed to the makeup air system in the winter. The intent of the new envelope would be to provide operable windows to allow occupants the access to fresh air. It is also intended that some of these openings be motorized to allow a night purge cycle to take advantage of the concrete thermal mass. Calgary’s climate is ideal for use with a high mass building to save operating energy. Night-time temperatures are from 10 to 15 degrees C cooler than daytime highs. Cool air at night will be used to flush the building and store cool within the high mass slab, ready for the next day’s operations. The daytime thermal flywheeling of the mass within the structure will be recharged by using the operable windows to drag cool air through the facility at night. The system will be automated to prevent overcooling of the facility or simultaneous heating and cooling. Chilled water will be provided from the central chilled water plant with cooling coils and chilled beams sized for high temperature differentials. The University of Calgary standard control valve and metering detail will be used for this connection. Fire Protection A new fire pump will be located in the basement of the MacKimmie Tower building to serve the entire facility. All three buildings will be considered as one building for the purposes of fire protection. The Siamese connection will be relocated to the front NE of the Tower building adjacent to the front entrance. Sprinklers will be provided throughout the building as per NFPA 13. New fire extinguishers located in lockable cabinets will also be provided throughout as per NFPA 10. � BLOCK Site Services The building is served by a 150mm (6”) dia. sanitary sewer service and a 300mm (12”) dia. storm sewer service connected to manholes on the East side of the building. A 150 mm (6”) dia. domestic water service and chilled water is provided through the campus tunnel piping system network. These services are adequate for the new expansion and may be reused. Plumbing The plumbing piping systems will be completely replaced including domestic water lines, sanitary lines, and storm water lines. Plumbing fixtures will be water conserving, good commercial grade. Water closets will be low flow, dual-flow flushometer type. Urinals will be 0.1 gallon per flush models that provide a slight cleaning affect to the urinal surfaces. Faucets will be low flow and will be infra-red activated. Sanitary and storm drainage will be provided throughout in accordance with the Plumbing Code. Domestic hot water will be generated from the hot water system by the use of two domestic hot water heat exchangers. Domestic hot and cold water will be supplied to all fixtures with the exception of the toilets. River process water will be used for toilet flushing and irrigation of the green roof areas. Heating Heating systems will be completely replaced and will generally consist of radiant panels since high temperature heating water is readily available from the Co- Generation Plant. Standard entrance heaters will be provided at all entrances. The old steam generators will be deleted and two new redundant primary high temperature hot water to low temperature hot water heat exchangers will be provided in the vault. A new high temperature hot water to steam generator will also be provided to serve humidification needs of the building. Ventilation and Cooling Ventilation and Cooling Two displacement ventilation units will be provided to serve the lecture theatres and classroom spaces. These units will be 100% outside air and will incorporate a heat recovery wheel. Displacement air will be distributed through stair risers in raked classroom areas and through low level wall diffusers in flat classrooms. Two conventional variable air volume units will provide ventilation and cooling to the student and registrar areas. These units will provide for occupancy loads in these areas that may have significant variability. Typically these areas will not have high outside air percentages, so a standard mixed air unit will provide good performance. Chilled water will be provided from the central chilled water plant with cooling coils sized for high temperature differentials. The University of Calgary standard control valve and metering detail will be used for this connection. Fire Protection CONCEPT DESIGN REPORT UNIVERSITY OF CALGARY MacKimmie Tower and Block I Repurposing and Renewal A new fire pump will be located in the basement of the MacKimmie Tower building to serve the entire facility. All three buildings will be considered as one building for the purposes of fire protection. The Siamese connection will be relocated to the front NE of the Tower building adjacent to the front entrance. Sprinklers will be provided throughout the building as per NFPA 13. New fire extinguishers located in lockable cabinets will also be provided throughout as per NFPA 10. � LINK 8. CONCEPT DESIGN Site Services Site services for the Link will be connected to the Block area where required. It is not anticipated that site services will be required for this area. Plumbing Plumbing will not be required within the Link area. Storm lines may be required depending on the final roof configuration, these will be directed towards the Block building and connected to storm. Heating The Link area will utilize radiant heating in the new slabs, since this area will be reconstructed as part of the proposed renovations. Standard entrance heaters will be provided at all entrances. Heating water for the Link will be provided from the Block mechanical room. Ventilation and Cooling The Link area will be served by radiant cooling in the slab (based on a switchover system) and a displacement ventilation system located in the occupied zones. The design intent is to use “unused” ventilation air from the Block building to provide part of the outdoor air supply to the Link Area. A damper arrangement and carbon dioxide monitor will allow the unit to reuse this ventilation air or draw directly from outside based on energy efficiency. The building is being designed to utilize a hybrid natural ventilation system. When the outdoor air temperature is conducive to ventilating, operable louvers or windows will allow cool outside area into the Link. The displacement ventilation system will be augmented by the use of these openings to introduce ventilation and cooling air into the facility. In order to assure that openings draw air into the Link regardless of wind direction or location, openable louvers and fans will be designed for the Link area. The negative pressure developed within the Link will promote a positive airflow from the openings, through the Link, and out the relief openings. It is also intended that some of these openings be motorized to allow a night purge cycle to take advantage of the concrete thermal mass. Calgary’s climate is ideal for use with a high mass building to save operating energy. Night-time temperatures are from 10 to 15 degrees C cooler than daytime highs. Cool air at night will be used to flush the building and store cool within the high mass slab, ready for the next day’s operations. The daytime thermal flywheeling of the mass within the structure will be recharged by using the operable windows to drag cool air through the facility at night. The system will be automated to prevent overcooling of the facility or simultaneous heating and cooling. Fire Protection A new fire pump will be located in the basement of the MacKimmie Tower building to serve the entire facility. All three buildings will be considered as one building for 51
Page 1 and 2: DRAFT CONCEPT DESIGN REPORT UNIVERS
Page 3 and 4: The preparation of this Concept Des
Page 5 and 6: 1.1 PROJECT DESCRIPTION Stantec Arc
Page 7 and 8: View of Mackimmie Library Tower, Li
Page 9 and 10: Swan Mall looking South West Pedest
Page 11 and 12: 2.4 Climate Average daily temperatu
Page 13 and 14: Open Space and Connections Redesign
Page 15 and 16: 4.1 Purpose of the Report The first
Page 17 and 18: 5.1 Workplace Test/Fit - MLT (Tower
Page 19 and 20: 5.2 Academic Space Test /Fit - MLT
Page 21 and 22: 6.2 Process Phase 1 - Define Progra
Page 23 and 24: 7.2 Site Concept Plan The proposed
Page 25 and 26: 7.3 Town Square - precedent images
Page 27 and 28: 7.4 Academic Block � Student Spac
Page 29 and 30: 7.4 Academic Block � Transparency
Page 31 and 32: 7.5 Administration Tower � Level
Page 33 and 34: 7.6 Roof � Green Roof The block r
Page 35 and 36: 7.8 Sustainability Sustainable Desi
Page 37 and 38: 7.9 Mechanical Systems � Introduc
Page 39 and 40: 8.1 Architectural Design - Concept
Page 41 and 42: 8.1 Architectural Design - Concept
Page 43 and 44: 8.1 Architectural Design - Building
Page 45 and 46: 8.1 Architectural Design - MLT Bsmt
Page 47 and 48: 8.1 Architectural Design - MLT 2 /
Page 49 and 50: 8.1 Architectural Design - MLT 4-6
Page 51: 8.2 Sustainability ( Reference Appe
Page 55 and 56: 8.4 Electrical � Overview The des
Page 57 and 58: 8.5 Structural � Overview The McK
Page 59: CONCEPT DESIGN REPORT UNIVERSITY OF

DRAFT CONCEPT DESIGN REPORT UNIVERSITY OF CALGARY ...

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