Fsi module 1_v2 introduction
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Ventilated Facade prestudy for Facade Systems Inc Webinars and Lunch and Learns
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Fsi module 1_v2 introduction
- 3. Learning concepts • Set assumptions for Ventilated Rainscreen Facades • Common themes • Design in process; detailing, specification • Design through to construction • Combustibility and code • Constructability • Value Engineering • Other systems • Precast • Curtain wall • Brick 2018 Confidential 3
- 4. What Matters with Ventilated Rainscreen Facades • Building Envelope: Insulation, thermal bridging, air, water and vapour. • External of structure best, continuous, more = higher effective R Value • Issue of thermally bridging solved • AVB and Weather membranes can also be continuous. • Between studs; last resort, bridged, ineffective. • But we are “wrong” because code allows imperfect envelopes because modelling can reduce importance of better building envelope. • Enforcement insufficient? • Rainscreen • Vertical girts, typically 1” deep. Can be wood, galvanized steel, aluminum • Wall open top and bottom, protected by bird screen • Often open at horizontal joints; aesthetic choice • Panels, attached in various ways, allowed to expand and contract at will • Detailing for aesthetics, durability, constructability and structure. 2018 Confidential 4
- 5. Confidential 2018 5 All examples of ventilated rainscreen Early modern example Ventilated aluminum rainscreen Water and weather shedding and protection part of rainscreen idea Ventilated panel architecture of today
- 6. 2018 Confidential 6 So What ➢ Open top and bottom = ventilation = moisture management ➢ Thermally broken insulated façade = effective
- 7. Learning concepts • Set assumptions for Ventilated Rainscreen Facades • Common themes • Design in process; detailing, specification • Combustibility and code • Constructability and construction expectations • Value Engineering • Other systems • Precast • Curtain wall • Brick 2018 Confidential 7
- 8. 2018 Confidential 8 Concept Design Detailing and Specifying Engaging Contractors (Tender) • Design intent • Finish • Shape and direction • Aesthetic • Panel choices • Role of supplier / agent • Narrow panel choices • Layout • Code compliance • Budget • Role of supplier / agent • Details with other elements • Not too much! Be sure Contractor owns it. • Narrow choices of installers • Spec • Role of supplier / agent • Tighten budget • Contractor credentials • Shop drawings expectations • Value Engineering • Constructability • Role of supplier / agent Common Themes: Design in process; detailing, specification
- 9. 2018 Confidential 9 Common Themes: Combustibility and code Basics; egress and spread Facades • Can ULC S114, 135 and 134 • 134 impact in Ontario • Alternate solutions • Insulation choices • Membranes Interiors • S102 • Fire code • Structural issues / role of engineer • Most of key issues not covered in Code, so important to refer to Manufacturer’s Instructions • CCMC and Part 3
- 10. 2018 Confidential 10 Common Themes: Constructability and Construction Constructability • Weather, vapour and air barriers • Insulation in right place and thermally broken. • Subgirt assembly and spacing, including clips • Allowing for expansion and contraction • Structural engineering • Trade handoffs • Framing to Cladding • Cladding to Windows/Doors • Cladding to Roofing Construction: what happens on site • Safety = Quality!! • Confidence in contractor • Wall acceptance handoff • Spaces, gaps • Process • Accuracy • Waste
- 11. 2018 Confidential 11 Common Themes: Value Engineering do it now. • Impact of design • Layout • Complexity; details • Labour • Experience • Learning curve • Benefit of speed • Product • Base price • Waste
- 12. 2018 Confidential 12 Other systems: What matters to you? Ventilated Façade Precast Curtain Wall Brick Stone Design Freedom Detailing Durability Thermal performance / investment Price range Speed Environment EIFS Metal Panel Siding Residential products Spandrels
- 13. 2018 Confidential 13 Solid Phenolic Brick Rainscreen Fibre Cement Rainscreen Siding Terra Cotta Rainscreen Stone Composite Rainscreen