Planning Your Green Roof - Shady Grove Adventist Hospital Healing Garden

LANDSCAPE ARCHITECTURE | MASTER PLANNING | URBAN DESIGN

BARBARA TRULAND-BUTZ HEALING GARDEN | SHADY GROVE ADVENTIST HOSPITAL

Green Building: Planning Your Green Roof – A Case Study

BARBARA TRULAND BUTZ HEALING GARDEN

SHADY GROVE ADVENTIST HOSPITAL

Presented by:

William H. Smith, Shady Grove Adventist Hospital FoundationScott C. Scarfone, ASLA, Oasis Design Group

Copyright Oasis Design Group, Inc. 2010



PROJECT OVERVIEW

Environmental Excellence in Healthcare: A Showcase of Best Practices



PROJECT OVERVIEW

Shady Grove Adventist Hospital Facts

• 336 Licensed Beds

• Part of Adventist HealthCare System

• Level IIIB Neonatal Intensive Care Unit

• Only Pediatric Intensive Care Unit in

Montgomery County, MD

• 24-Bed Oncology Unit Adjacent to Healing

Garden




THE GARDEN DESIGN - BEFORE




THE GARDEN DESIGN




PROJECT OVERVIEW

Architectural Facts

• Garden Directly Over Operating Room

• Metal Decking Roof System

• 6.25” Concrete Slab

• IRMA Type Waterproofing Membrane

w. Protected Membrane

• Roof Drains @Top of Slab/Membrane

• 40 lbs/psi Dead Load

60 lbs/psi Live Load

Healing Garden Facts

• 20,250 Square Feet of Garden

• Fully Accessible

• Both Intensive (73%) and Extensive

(27%) Green Roof Systems

• 74% Green Space vs. 26% Paving

• 1330 Square Feet Shade

• +/- $140,000 Design Fees

• $1.4 Million Construction Cost –

100% Donor Paid For!

• Seven Month Construction Period




PATIENT CARE AND HEALING

“Mounting research is providing convincing evidence that

visual exposure to nature improves outcomes such

as stress and pain.”

“Ulrich (1984) found that patients recovering from

abdominal surgery recovered faster, had better

emotional well-being, and required fewer strong pain

medications if they had bedside windows with a nature

view (looking out onto trees) than if their windows looked

out onto a brick wall.”

The Role of the Physical Environment in the Hospital of

the 21st Century: A Once-in-a-Lifetime Opportunity

(Ulrich, Zimring, 2004) Chicago City Hall | Roofscapes Inc.

“Today, we know that being

surrounded by nature plays a

significant role in patient outcome.”

HEALTHCARE BENEFITS




STAFF AND FAMILY BENEFITS

“Hospital gardens not only provide restorative or calming nature

views, but can also reduce stress and improve outcomes through

other mechanisms, for instance, fostering access to social

support and providing opportunities for positive escape and

sense of control with respect to stressful clinical settings.”

- (Cooper Marcus & Barnes, 1995; Ulrich, 1999).

“. . . Many nurses and other healthcare workers used the

gardens for achieving pleasant escape and recuperation from

stress.”

“Patients and family who use hospital gardens report positive

mood change and reduced stress. These reports also suggest

that gardens and nature in hospitals can heighten patient and

family satisfaction with overall quality of care.”

The Role of the Physical Environment in the Hospital of

the 21st Century: A Once-in-a-Lifetime Opportunity

(Ulrich, Zimring, 2004Shady Grove Staff , Patients, and Family

HEALTHCARE BENEFITS




MARKETING BENEFITS

• Illustrates commitment to a holistic approach to providing

healthcare

• Demonstrates, in part, commitment to the environment

• Illustrates LEED building and design principles

• Provided much needed outdoor green space




SUSTAINABLE PERFORMANCE BENEFITS

LEED Certification – Point Potential

• SS 5.2 Maximize Open Space 1 Point

• SS 6.2 Stormwater Design 2 Points

• SS 7.2 Heat Island Effect 2 Points

(must cover 50% of roof)




BUILDING PERFORMANCE

• +/- 5-10% Db noise reduction

• Decrease roof membrane degradation – can last 2-3x longer!

• 30-40% water retention (with 6” media)

• „R‟ value savings varies – no guarantee

• Aesthetic improvement

• Zero heat island contribution

• Captured green space




GREEN ROOF SYSTEM

Typical Roof System

– Ballast

– Rigid Insulation

– Existing Roof Membrane

– Concrete Deck

– Metal Decking

Green Roof System

– Light Weight Growth Media

– Separation Fabric

– Drainage Media

– Root Barrier Layer




GREEN ROOF SYSTEM - EXTENSIVE

Copyright Roofscapes Inc., 2005

Characteristics

• Less than 4” media

• Often inaccessible

• 10-35 lb/sq. ft. weight

Advantages

• Lightweight

• Low maintenance

and no irrigation rqd.

• Suitable for retrofits

• Low costs

• Easy to replace




Characteristics

• More than 6” media

• Usually accessible

• 50-300 lb/sq. ft. weight

• Design diversity

• High cost

GREEN ROOF SYSTEM - INTENSIVE

Copyright Roofscapes Inc., 2005

Advantages

• Plant diversity

• Often accessible

• High stormwater

mgt. and insulation

• Variety of human

uses

• Biodiversity




THE GARDEN DESIGN




THE SITE - BEFORE




THE SITE – AFTER




THE GARDEN DESIGN




THE GARDEN DESIGN




ROOF DRAINAGE SYSTEMS

Triangular Drainage Channels & Roofdrains

Triangle Drainage Channel in Granular Drainage Media




„SUB-SURFACE‟ LAYERS INSTALLATION




PERGOLA „FOUNDATIONS‟




FOUNTAINS

FOUNTAIN DESIGN (redundant design features)

– Automatic Shutoff Valve

– Overflow Drain

– Backflow Preventer and Shutoff Valves




FOUNTAINS





Documents

Planning Your Green Roof - Shady Grove Adventist Hospital Healing Garden