From Sieve to Silver


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Diana Hamilton of Delcan presents an industrial retrofit project to LEED silver standard.
Presented at the 5th annual Green Building Festival in Toronto, Canada, 2009.

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  • Giving building a new look
  • Key LEED credits include:
  • Pre-consumer (waste from industrial processes) Post-consumer – what we throw out
  • From Sieve to Silver

    1. 1. Gre en Building Festival – Sept 24, 2009 York Region Transit Bus Maintenance Facility 8300 Keele Street, Vaughan Diana Hamilton, OAA, MRAIC, LEED ® AP  Principal, Senior Architect, Delcan Corporation From Sieve to Silver
    2. 2. Presentation Overview <ul><li>Project Team & Objectives </li></ul><ul><li>Existing Site & Building </li></ul><ul><li>Proposed Site Lay-out </li></ul><ul><li>Building Upgrades </li></ul><ul><li>LEED Goals and Integration </li></ul><ul><li>Building Program & Final Lay-out </li></ul><ul><li>Process Equipment </li></ul><ul><li>Energy & M&E Systems </li></ul><ul><li>Water, Materials, Other Measures </li></ul><ul><li>Quality of Space </li></ul><ul><li>Incentives </li></ul>
    3. 3. Project Team <ul><li>Traditional Project Delivery: Design-Bid-Build </li></ul><ul><li>Client - York Region Transit </li></ul><ul><li>Architectural / LEED Consulting - Delcan Corporation </li></ul><ul><li>Mechanical & Electrical Engineering - HH Angus </li></ul><ul><li>Structural Engineering - Banerjee & Associates </li></ul><ul><li>Landscape Design - McWilliam & Associates </li></ul><ul><li>General Contractor – Bondfield Construction </li></ul><ul><li>Commissioning - Hunter Facilities Management </li></ul>
    4. 4. Client Objectives <ul><li>York Region Transit (YRT): </li></ul><ul><ul><li>Continue to provide services for the increasing volume of public transportation for all nine municipalities of York Region </li></ul></ul><ul><ul><li>Conversion of an industrial building into an efficiently planned space for the smooth operation of a bus facility that stores, maintains and repairs a fleet of 230 buses as well as the related operations and administration space </li></ul></ul><ul><ul><li>Is targeting LEED Silver </li></ul></ul>
    5. 5. Site <ul><li>4.5 hectares (11 acres) </li></ul><ul><ul><li>Building – 2.1 hectares (5.1 acres) </li></ul></ul><ul><ul><li>Asphalt/landscaping – 2.4 hectares (5.9 acres) </li></ul></ul>
    6. 6. 8300 Keele - Building History <ul><li>Original building - 1970 </li></ul><ul><li>Additions - mid-1990s </li></ul><ul><li>Floor area </li></ul><ul><ul><li>2/3 pre-1990 </li></ul></ul><ul><ul><li>1/3 post-1990 </li></ul></ul>
    7. 7. Context – Existing Building <ul><li>Converting an existing one- storey industrial steel framed building </li></ul><ul><li>Warehouse part has numerous cladding types based on when additions were built: Insulated metal and concrete panels, metal over siporex, brick veneer </li></ul>
    8. 8. Existing Envelope <ul><li>East section - insulated precast concrete panels </li></ul>
    9. 9. Existing Envelope <ul><li>Remaining cladding - either insulated metal panels or metal over lightweight concrete: 10% Siporex </li></ul><ul><li>Roof deck - 80% Siporex </li></ul><ul><li>All Siporex removed due to deterioration and compromised structural integrity </li></ul>
    10. 10. Siporex <ul><li>Aerated concrete: </li></ul><ul><li>Aluminum added to a concrete slurry, where reaction causes expansion </li></ul><ul><li>Touted as a viable insulating concrete </li></ul><ul><li>Failure: </li></ul><ul><li>Panels are susceptible to moisture damage and eventual failure </li></ul><ul><li>Such was the case in this building </li></ul><ul><li>Fully recyclable </li></ul>
    11. 11. Proposed Site Lay-out <ul><li>Existing asphalt to be removed due to poor condition and pour drainage & low bearing capacity </li></ul><ul><li>New landscaped frontages </li></ul><ul><li>New permeable pavement </li></ul><ul><li>New access to Keele in the southeast corner of the site </li></ul>
    12. 12. Building Envelope Upgrades <ul><li>Peeled back exterior skin, where necessary: </li></ul><ul><li>Walls - Siporex panels (10%) replaced with insulated metal panels </li></ul><ul><li>Roof – 4-ply gravel on Siporex panels removed, new white reflective roof membrane on insulated metal roof deck </li></ul><ul><li>Office block - masonry cladding to be covered with insulated metal panels </li></ul><ul><li>Openings - Numerous new overhead doors on the north facade for bus entry, others on the south and west façades </li></ul>
    13. 13. Slab Upgrades <ul><li>Fly ash – min. 15% </li></ul><ul><li>Majority of the slab in the bus maintenance area is being replaced for: </li></ul><ul><ul><li>new below grade mechanical systems (cisterns) </li></ul></ul><ul><ul><li>improved drainage, oil separators, etc. </li></ul></ul><ul><ul><li>Increased capacity of structural slab </li></ul></ul><ul><li>Existing slab to be </li></ul><ul><li>removed will be crushed </li></ul><ul><li>and recycled as site fill. </li></ul>
    14. 14. Structural Steel <ul><li>Local source and high recycled content specified </li></ul><ul><li>Structural steel will be removed and existing columns relocated </li></ul><ul><li>Additional horizontal bridging at the underside of the roof structure </li></ul><ul><li>Provide steel framing for wall cladding system and above new Overhead Doors </li></ul><ul><li>New galvanized steel roof deck. </li></ul>
    15. 15. Goals - LEED™ Silver : • Encourage transit, biking and vehicle pooling • Minimize use of potable water • Reduce the heat island effect • Specify energy efficient mechanical, lighting and electrical systems • Local and recycled materials • Low off gassing (VOC) materials and products • 95% of construction waste diverted from landfill • Buildings commissioned in accordance with ASHRAE Guidelines
    16. 16. Integration <ul><li>Integrated design sessions with multiple stakeholders & disciplines </li></ul><ul><li>LEED™ requirements integrated into Specifications </li></ul><ul><li>LEED™ session prior to Tender for Construction Bidders </li></ul><ul><li>LEED™ sessions with GC and sub-contractors </li></ul><ul><li>Monitoring during construction </li></ul>
    17. 17. Building Program and Final Lay-out <ul><ul><li>Bus storage (55%) </li></ul></ul><ul><ul><li>Office (10%) </li></ul></ul><ul><ul><li>Bus maintenance (20%) </li></ul></ul><ul><ul><li>Daily bus servicing (15%) </li></ul></ul><ul><ul><li>Bus storage - semi-heated </li></ul></ul>
    18. 18. Process Equipment <ul><li>Major pieces of equipment: </li></ul><ul><li>indoor diesel fuel pumps </li></ul><ul><li>central air compressors </li></ul><ul><li>industrial vacuum systems </li></ul><ul><li>high speed bus wash </li></ul><ul><li>In ground and above ground hoists </li></ul><ul><li>overhead hoist beams for hybrid bus maintenance </li></ul><ul><li>inspection pits with pit jacks </li></ul><ul><li>spray booth </li></ul><ul><li>welding bay </li></ul><ul><li>machine shop </li></ul><ul><li>tire repair bay </li></ul><ul><li>Diesel Back-up generator </li></ul>
    19. 19. Energy <ul><li>Challenges: </li></ul><ul><li>large numbers of buses entering/exiting at given times </li></ul><ul><li>large volumes of conditioned air evacuated </li></ul><ul><li>existing warehouse - envelope is a sieve </li></ul><ul><li>Energy efficient design: </li></ul><ul><li>higher roof insulation values </li></ul><ul><li>resealed walls </li></ul><ul><li>high efficiency mechanical equipment </li></ul><ul><li>Building Automation System (BAS) </li></ul><ul><li>Renewable energy </li></ul><ul><li>solar hot water system </li></ul>
    20. 20. Mechanical & Electrical Systems <ul><li>High efficiency motors & condensing boiler </li></ul><ul><li>Staging control ventilation system </li></ul><ul><li>Variable frequency drives on air handling units, pumps, recirc. fans </li></ul><ul><li>BAS control for VAV boxes and Air Handling Units </li></ul><ul><li>Energy recovery units </li></ul><ul><li>Carbon Dioxide, Carbon Monoxide, Nitrous Oxide sensors </li></ul><ul><li>Low voltage lighting control </li></ul><ul><li>Outdoor light fixtures governed by sensors and timers </li></ul>
    21. 21. Water <ul><li>3 uses for roof rainwater: (stored in cistern in existing basement): </li></ul><ul><li>Daily bus wash system </li></ul><ul><li>Sewage conveyance </li></ul><ul><li>Landscape irrigation </li></ul><ul><li>Other water features: </li></ul><ul><li>Low-flow fixtures </li></ul><ul><li>Oil interceptors to keep grit and oil out of storm sewers </li></ul><ul><li>Permeable paving-recharge groundwater </li></ul>
    22. 22. Materials <ul><li>Recycled content </li></ul><ul><li>Regional Materials </li></ul><ul><li>50% FSC wood </li></ul>
    23. 23. Other Measures <ul><li>Lighting- moisture-resistant sealed T5 luminaires in the bus storage area will result in lower maintenance. </li></ul><ul><li>Best-practice Commissioning </li></ul><ul><li>Light coloured roofing and paving to mitigate the heat-island effect </li></ul>
    24. 24. Quality of Space <ul><li>Low-emitting materials and finishes </li></ul><ul><li>Maximize natural light (windows, skylights) & views to outdoors, where appropriate </li></ul><ul><li>Locally manufactured material/fsc wood </li></ul><ul><li>Provide lighting/HVAC comfort </li></ul><ul><li>Bike storage/showers </li></ul>
    25. 25. Incentives <ul><li>OPA HPNC (Ontario Power Authority - High Performance New Construction) </li></ul><ul><li>Enbridge - One-stop shopping : </li></ul><ul><li>up to 25% greater than MNECB: $250/kt saved </li></ul><ul><ul><ul><ul><li>25.5% – 50% greater than MNECB : $300/kt saved </li></ul></ul></ul></ul><ul><ul><ul><ul><li>greater than 50% greater than MNECB : $400/kw saved </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Supports 100% of energy modeling cost (up to $10,000) </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Design decision-maker : </li></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>25.5% – 50% above MNECB : $50/kt saved </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>greater than 50% above MNECB: $100/kt saved </li></ul></ul></ul></ul></ul><ul><ul><ul><li>NBCP (Enbridge's New Building Construction Program) </li></ul></ul></ul><ul><ul><ul><ul><li>up to $30,000 at $0.10/m3 of gas saved </li></ul></ul></ul></ul><ul><ul><ul><li>DAP (Enbrige’s Design Assistance Program) - $5,000 </li></ul></ul></ul><ul><ul><ul><li>NRCan ecoENERGY (Gov. of Canada’s Incentive for Renewable Energy) </li></ul></ul></ul><ul><ul><li>solar hot water system </li></ul></ul>
    26. 26. Thank you