ARE YOUR SKYRISE GARDENS SAFE? SKYRISE DESIGN FOR SAFETY: A LANDSCAPE ARCHITECT S PERSPECTIVE

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1 ARE YOUR SKYRISE GARDENS SAFE? SKYRISE DESIGN FOR SAFETY: A LANDSCAPE ARCHITECT S PERSPECTIVE By Terence Tan

2 SYNOPSIS ROOF GARDEN MSCP ROOF SUNBREEZE PRECINCT 01 BIOGRAPHY- A short introduction about the speaker: Terence Tan 02 SKYRISE GREENERY- Different Forms and Types 03 GREEN ROOFS- Things to note for Design for Safety Edge Treatment Suitable Plant Types Anchoring Systems Structural Considerations 04 GREEN WALLS- Things to note for Design for Safety Low-rise maintenance High-rise maintenance

3 BIOGRAPHY CHIEF EXECUTIVE OFFICER GREENEARTH CONSULTANTS PTE LTD HONORARY SECRETARY SINGAPORE INSTITUTION OF LANDSCAPE ARCHITECTS (SILA) GENERAL SECRETARY & EXHIBITION CO-CHAIR INTERNATIONAL FEDERATION OF LANDSCAPE ARCHITECTS (IFLA) WORLD CONGRESS SINGAPORE 2018 RIVERVALE DELTA KALLANG WHAMPOA DEW SUNGEI TAMPINES PROJECTS GREENEARTH CONSULTANTS PTE LTD

4 SKYRISE GREENERY: TYPES VERTICAL GREENERY MAYBANK KIM ENG PROPERTIES ROOF GARDEN MSCP ROOF KALLANG WHAMPOA DEW BALCONY PLANTERS BALCONY SOLARIS Source: Greenology SKY TERRACE SKY PARKROYAL Source: Elmich Source: Tiong Seng Group IMAGE CREDIT: National Parks Board. Bringing Greenery Skywards: A Handbook on Developing Sustainable Highrise Gardens. National Parks Board, 2017,

5 GREEN ROOFS: TYPES INTENSIVE GREEN ROOF MSCP ROOF KALLANG WHAMPOA DEW EXTENSIVE GREEN ROOF FOOD SINGAPORE BOTANIC GARDENS Source: Colours Design Workshop Intensive/ high profile green roofs are roof gardens created for people access, usually for recreational purposes. They have a higher planting medium depth to hold a large variety of plants, and also contain paths, small structures and other elements. Extensive/low profile green roofs are best suited to roofs which are not accessible to people (except for maintenance). They have a shallow planting medium depth which limits the type of plants that can be grown on them.

6 GREEN ROOF: EDGE TREATMENT Trees and planting near the edges IMAGE CREDIT: National Parks Board. Bringing Greenery Skywards: A Handbook on Developing Sustainable Highrise Gardens. National Parks Board, 2017,

7 GREEN ROOF: EDGE TREATMENT Planters at the edges- Maintenance and Safety Planters at the roof edges should not be a safety issue for users or maintenance personnel. Maintenance pathways, safety hook lines and other elements should be catered for in the design.

8 GREEN ROOF: SUITABLE PLANT TYPES IMFORMATION CREDIT: National Parks Board. Bringing Greenery Skywards: A Handbook on Developing Sustainable Highrise Gardens. National Parks Board, 2017, Poh Choon Hock. Skyrise Greenery Safe Design: Highlights of a CUGE/NParks Design Guideline. WSH Forum for Landscape Sector, 6 Mar. 2015, Singapore.

9 GREEN ROOF: ANCHORING SYSTEMS Root Anchoring (Hidden system), Galvanized steel stakes, Guy-wire tensioner. IMFORMATION CREDIT: Poh Choon Hock. Skyrise Greenery Safe Design: Highlights of a CUGE/NParks Design Guideline. WSH Forum for Landscape Sector, 6 Mar. 2015, Singapore.

10 GREEN ROOF: STRUCTURAL CONSIDERATION Loading capacity and design load of roof, Waterproofing, Drainage ROOF GARDEN MSCP ROOF KALLANG WHAMPOA DEW Bulk trees/ palms/ shrubs should be strategically located and preferably positioned over structural members such as columns. The design should transfer tree loads optimally through the building, and safely to the ground. A Professional Engineer (PE) should be engaged to verify the loading capacity of the roof to certify that it can support the additional loads from the rooftop greenery systems, other relevant landscaping materials and wet load of the system during heavy rainfall, and that the structural integrity of the roof/ wall structure is not compromised. WATERPROOFING & DRAINAGE Drainage systems on roof gardens should be adequately designed with proper gradients to prevent water stagnation and mosquito breading. There should also be a safe and permanent access to roofs for regular inspection and maintenance.

11 GREEN WALL: LOW-RISE MAINTENANCE Allowing for maintenance access INFORMATION CREDIT: Poh Choon Hock. Skyrise Greenery Safe Design: Highlights of a CUGE/NParks Design Guideline. WSH Forum for Landscape Sector, 6 Mar. 2015, Singapore.

12 GREEN WALL: HIGH-RISE MAINTENANCE Allowing for maintenance access Source: Landmark Living Roofs INFORMATION CREDIT: Poh Choon Hock. Skyrise Greenery Safe Design: Highlights of a CUGE/NParks Design Guideline. WSH Forum for Landscape Sector, 6 Mar. 2015, Singapore.

13 THANK YOU THE END By Terence Tan