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Hunnewell Elementary SchoolDD UpdateDecember 3, 2020
Tonight’s Agenda
• Project Schedule Update
• Permitting Update
• Engineering Disciplines Updates
HVAC
Electrical & Security
Plumbing
Commissioning Updates
Sustainability
• Floor Plans: Educational Planning Updates
• Interior Materials Update & FF&E
• DD Cost Estimate Status
Value Engineering Process
Schedule
• 11/30/20 Issued Design Development Pricing Set
• 12/18/20 Reconcile DD Estimates
• 1/14/2021 Present DD Updates, Estimate and VE recommendation
• 1/14/2021 Approval to proceed into Construction Document Phase
(Hunnewell staff update on 12/16; confirm SC sign-off)
Recent Updates• Geo-environmental investigations completed (awaiting test results)
No anticipated additional soil remediation/removal
• Ambient sound survey completed
With operational coordination no acoustical screening recommended (visual screen only)
• Water quality tests returned within acceptable limits
Water softening equipment not required
Permitting
• Project of Significant Impact
• Submission 7/13/2020
• Public Hearings participated in on: 9/8, 10/12, 11/16, 12/7 (with 12/21 planned)
• Comments received from Town Departments between 10/13 and 11/17
• Awaiting formal comments from Planning Board
• Off-site improvements/recommendations from PSI still in review
• Planning Board has requested NOI be advanced; conflict with current permitting schedule
• Planned Planning Board Decision on PSI 1/11/2021
• Planned Submission on NOI with DD Set after approval on 1/14/2021
• Notice of Intent (as noted above)
• Design Review Board
• First formal meeting held on 8/12/2020
• New meeting planned for immediately after PBC DD approval
Site Plan: 11/20/2020
Fuller Brook
Cameron Street
Proprietary Votes Required:
JCI Metasys Building Management System
• System compatibility across Town and WPS
Schlage Locksets
• System compatibility across Town and WPS
Genetec
• Electronic Security System, System compatibility across Town and WPS
Water Fountain/Hydration Stations
• Filters and parts
Engineering Systems Update
Mechanical Systems
Mechanical Systems Current Basis of Design – Displacement Ventilation + Packaged DX DOAS
Mechanical Systems Perimeter Heating System
Mechanical SystemsClassroom Wing Displacement Diffusers
Mechanical SystemsClassroom Wing Perimeter Heat
Mechanical SystemsRoof Level Equipment
DOAS Units
VRF ACCU Units
Electrical Systems
Electrical Systems
Fire Alarm & Security PlansLocations on plans
Lighting & ControlsSystem description
Plug Load Management NZR Strategy
MeteringGoals
Emergency PowerEmergency generator
Code Summary
FACP, with Voice Evac
Smoke Detector
Future PV Rapid Shutdown Button
Fire Alarm Beacon
Generator EPO
Fire Alarm Pull Station
BDA Annunciator
Radio Master Box
Knox Box
Door Number Identification
First Floor Fire Alarm Diagram
Main Elec
Room
1 2
34
5
6
7
8
9
101
Main
Entrance
Kindergarten
First Grade
Second Grade
Admin
Cafetorium
Gymnasium
Service
Entrance
BDA Amplifier
Smoke Detector
Second Floor Fire Alarm Diagram
Media
Center
Art / Music
Innovation Space
Open To Below
Third Grade
Fourth Grade
Fifth Grade
Electronic Security System (ESS)
▪ Per recommendations in the FMD Design and Construction Guidelines, and with approval from the WPS,
the ESS design will be based on the existing town-wide, Genetec access control and video surveillance
platform.
▪ Genetec platform benefits include:
Users are trained on existing ESS operations.
Allows remote access to perform modifications to the intrusion system using a laptop.
Provides a common access control solution.
▪ Intrusion alarm will be designed to integrate with the ESS for central monitoring.
▪ Minimum 3-MegaPixel interior cameras
▪ Planning for a meeting with Admin and Police to review Shelter in Place aspects of design
Plumbing & Fire Protection Systems
Plumbing Update
• Request for centralized hot water system vs. distributed
• Recommended and approved battery vs. hardwired fixtures
• Fire Hydrant Flow Test - currently no need for fire pump and room
• Water quality report and analysis shows no concerns for filtration or water
softening equipment
Basis of Design (Grease Trap)
1. Below grade Grease Trap with extensions (Zurn 75 GPM)
Water Coolers & Grease Traps
Basis of Design (Schofield Water Cooler)Recommendation as Proprietary Specification: Vote required by PBC
Elkay LZSTL8WSLK
Domestic Hot Water
(320L 119A Durawatt)
Water Heater
- Specifying (2) EWH, each to handle 2/3 of
building hot water load
- Removal of elements for inspection & descaling
annually
- Tanks to be drawn down to clear water flows at
drain valve annually
- 25-year life cycle
- Other Options: AO Smith
Water Softening
Water Heater- 75 mg/L or greater is considered hard
- Nothing found outside the EPA limits
- Water softening equipment is not recommended
Drinking fountains
Group Toilets
Single-user Toilets (Student)Single-user Toilet (Adult)
Single-user Toilet (Variable)
Custodial Closet
After Hours
Exit Alarm device
(Grille TBD)
First Floor Plan
Main
Entrance
Kindergarten
First Grade
Second Grade
Admin
Cafetorium
Gymnasium
Service
Entrance
Second Floor PlanDrinking fountains
Group Toilets
Single Toilets (Student)Single Toilet (Adult)
Single Toilet (Variable)
Custodial Closet
Mother’s Room
Media
Center
Art / Music
Innovation Space
Open To Below
Third Grade
Fourth Grade
Fifth Grade
Frostproof Spigot
Fire Dept Connection
First Floor Plan: Spigot Locations
Main
Entrance
Cafetorium
Gymnasium
Service
Entrance
Second Floor Plan: Spigot Locations
Located at high
roof above
Outdoor Learning Space
Open To Below
Frostproof Spigot
Fire Protection
1. Fully sprinklered 2 story building
2. 2 Fire department connections (One located outside the service room, one located out by the main entrance)
3. Dry sidewalls connected to a wet system to protect the outdoor storage room
NFPA Compliant Sprinkler System
Sustainable Design Updates
Summary: New 2020 MA Energy Code Highlights
IECC 2018 is the base Code adopted by Massachusetts
Massachusetts adopted additional criteria Amendments to the IECC 2018
• Amendments become part of the base code.
• Lighting power density requirements to ASHRAE 90.1-2019 standards.
(Schools - .72 W/SF)
• (3) C406 section options required as base code
• PV readiness
• EV readiness (1 parking space required for this project)
• 10% overall building energy performance better than New MA Energy
Code (IECC 2018) with Amendments.
Sustainable Design Update
• Design Development Energy Model and EUI update
• Solar Photovoltaic System Update
• LEEDv4 Certifiable
◦ Documentation Tracking
◦ No certification submittals
• Embodied Carbon Reduction Analysis
◦ Alternative Wood Structural Components
Design Development pEUI update
• Current Design Development Predicted EUI
•29 kBtu/SF/yr*
• *Based on All-Electric VRF/DOAS DX/Displacement Ventilation preferred HVAC system. Final pEUI subject to change pending design details/criteria during construction documents (CD) phase.
Proposed Design:
• 295,400 kWh/yr.*
• 253.6 kWdc
• 49% of overall energy use
• Budget: $1.2 Million
Energy Storage Readiness
Photovoltaic discussion with WMLP (Spring 2020)
◦ Pathway to PV system ownership or PPA pending on Solar Market Conditions upon construction completion.
◦ Interconnection Readiness coordinated with WMLP.
*per Solar Design Associates SD analysis.
Feasibility Study Assessment: 276,000 kWh/yr – 46% of estimated energy use.
Solar PV System Update
LEEDv4 Certifiable UpdateLEED v4 for BD+C: Schools
Project Checklist Hunnewell Elementary SchoolOctober 22 2020
Y ? N
1 Credit 1
2 8 # Preliminary 15 6 3 0 Preliminary 13
15 Credit 15 Y Prereq Required
1 Credit 1 Y Prereq Required
1 Credit 2 1 2 Credit 5
1 3 1 Credit 5 1 Credit 2
1 3 Credit 4 1 1 Credit 2
1 Credit 1 1 Credit Building Product Disclosure and Optimization - Material Ingredients 2
1 Credit 1 2 Credit 2
1 Credit Green Vehicles - 2% of spaces/occupants 1
7 7 2 Indoor Environmental Quality Preliminary 16
7 3 2 Preliminary 12 Y Prereq Required
Y Prereq Required Y Prereq Required
Y Prereq Required Y Prereq Required
1 Credit 1 2 Credit 2
2 Credit 2 1 2 Credit 3
1 Credit 1 1 Credit 1
2 1 Credit 3 1 1 Credit 2
1 1 Credit 2 1 Credit 1
1 Credit 1 1 1 Credit 2
1 Credit 1 1 2 Credit 3
1 Credit Joint Use of Facilities 1 1 Credit 1
1 Credit 1
6 1 5 Preliminary 12
Y Prereq Required 6 0 0 Innovation Preliminary 6
Y Prereq Required 5 Credit 5
Y Prereq Building-Level Water Metering Required 1 Credit 1
2 Credit 2
3 1 3 Credit 7 3 1 0 Regional Priority Preliminary 4
2 Credit 2 1 Credit Regional Priority: Renew able energy (2 points min) - based on 5% PV 1
1 Credit Water Metering 1 1 Credit Regional Priority: Optimize energy performance (8 points min) 1
1 Credit Regional Priority: Rainw ater management (2 points min) 1
16 9 7 Preliminary 31 1 Credit Regional Priority:Building LCA (Tally) 1
Y Prereq Required
Y Prereq Required 53 32 # TOTALS Possible Points: 110
Y Prereq Required Certified: 40 to 49 points, Silver: 50 to 59 points, Gold: 60 to 79 points, Platinum: 80 to 110
Y Prereq Required
6 Credit 6
8 5 4 Credit 16
1 Credit 1
1 1 Credit 2
2 1 Credit 3 PV system: $1.2 M allocated for a PV system
1 Credit 1
2 Credit 2
THE CREDITS INDICATED BY "YES" TO BE INCLUDED IN THE DESIGN DEVELOPMENT BUDGET
DRAFT Project Name:
Date:
Optimize Energy Performance - 20% energy costs savings
Fundamental Refrigerant Management
Enhanced Commissioning - MEP Option 1 path 2 (4 pts) & BECx Option 2 (2 pts)
Light Pollution Reduction
LEED for Neighborhood Development Location
Indoor Water Use Reduction - 30% minimum
Location and Transportation
Building-Level Energy Metering
Outdoor Water Use Reduction - no irrigation
Rainw ater Management
Cooling Tow er Water Use
High Priority Site
Surrounding Density and Diverse Uses
Green Pow er and Carbon Offsets
Minimum Indoor Air Quality Performance
Integrative Process
Indoor Water Use Reduction
Energy and Atmosphere
Fundamental Commissioning and Verif ication
Sensitive Land Protection
Open Space
Building Product Disclosure and Optimization - Sourcing of Raw Materials
Construction and Demolition Waste Management Planning
Environmental Tobacco Smoke Control
Minimum Acoustic Performance
Enhanced Indoor Air Quality Strategies-C02 Sensors at all required spaces
Building Life-Cycle Impact Reduction - based on v4.1 credit
Building Product Disclosure and Optimization - Environmental Product
Declarations
Demand Response - to be verif ied w ith WMLP
Renew able Energy Production -PV System: roof/electr (40%)
Enhanced Refrigerant Management
Water Efficiency
Low -Emitting Materials
Advanced Energy Metering
Minimum Energy Performance
Heat Island Reduction
LEED Accredited Professional
Indoor Air Quality Assessment
Interior Lighting
Acoustic Performance
Daylight
Quality View s
Innovation:Green Cleaning/IPM, Low Mercury Lamps, Exempl. EPDs & HPDs, (1)-TBD
Outdoor Water Use Reduction
Bicycle Facilities
Sustainable Sites
Construction and Demolition Waste Management
Access to Quality Transit
Reduced Parking Footprint - 20% parking reduction
Environmental Site Assessment
Site Assessment
Construction Activity Pollution Prevention
Thermal Comfort
Site Master Plan
Site Development - Protect or Restore Habitat
Construction Indoor Air Quality Management Plan
Storage and Collection of Recyclables
Materials and Resources
Educational Planning Updates
Design Development Plan Updates
Security Meeting
• Fire Dept., FMD, Police
Refined Materials Scope
• Sustainability, Durability, Maintenance, Cost
Heat & Serve Kitchen Refined
• Layout Update, Storage, Trash, Grease traps reviewed
FF&E Meeting
• Detailed Furniture Plans Developed
Main Entrance
After Hours Entrance
Community
After-Hours Use
Service Entrance
First Floor Plan
Second Floor Plan
Interior Materials Updates
10/1/2020
First Floor Plan: Admin, Nurse, Staff
First Floor Plan: Serving Kitchen Layout
Equipment
Review Pending
Flooring Materials Diagrams
First Floor Plan
Diagram of Floor Materials
Rubber Flooring
Wood
Terrazzo
Ceramic Tile
Walk off Mat
Epoxy Resinous
Sealed Concrete
Carpet Tile
Polished Concrete
Second Floor Plan
Diagram of Floor Materials
Rubber Flooring
Wood
Terrazzo
Ceramic Tile
Walk off Mat
Epoxy Resinous
Sealed Concrete
Carpet Tile
Polished Concrete
Environmental Graphics Diagrams
First Floor Plan
Wall Tile
Display Case
Graphics
Wood Wall
Wood Bench/Quiet Space
Hydration Station
Writeable Glass
Plaques
LCD Display
Defibrillator Unit
Fire Department
Diagram of Wall Materials
Second Floor Plan
Diagram of Wall Materials
Wall Tile
Display Case
Graphics
Ceramic Tile
Wood Wall
Wood Bench/Quiet Space
Hydration Station
Writeable Glass
Plaques
LCD Display
Ceiling Materials Diagrams
Diagram of Ceiling Materials
First Floor
Diagram of Ceiling Materials
Wood Deck with Acoustical Clouds
Wood Look Ceiling
2x2 Acoustical Panels
25% Gypsum Ceiling - 75% ACP
Gypsum Ceiling/Soffit
Exposed to Structure
Scrub-able Ceiling
Wood Soffit/ Signage
Second Floor
Diagram of Ceiling Materials
Wood Deck with Acoustical Clouds
Wood Look Ceiling
2x2 Acoustical Panels
25% Gypsum Ceiling - 75% ACP
Gypsum Ceiling
Exposed to Structure
Scrub-able Ceiling
Wood Soffit/ Signage
Design Development Plan Updates
Salvage Items
Existing Hunnewell Elements were considered for Reuse during SD, during the development of the plans we are not currently recommending any salvage for reinstallation other than the following items:
• Plaques and Framed objects
• (4) cast stone scrolls for use as site design elements
Site Sign
Bench
Hybrid Wood Structure Goals
Cafetorium: 4,000 SF
Roof Deck
GluLam Beams
“W” Columns at west façade
Cost: $250k - $300k
Thank-you
