GRPS Schematic Design Narratives_v2 Aberdeen 01312025.pdf

433 E Ransom St Kalamazoo, MI

Schematic Design

Narrative

GRPS Aberdeen Elementary School

Grand Rapids Public Schools

Grand Rapids, MI

Final SD Set: Jan 31, 2025

Acknowledgements

Architect of Record

Specifications

Construction Administration

Wightman

Design Architect/ Engineer

Landscape Architect

Acoustics

DLR Group

Structural Consultant

Structural Associates Inc.

Mechanical / Electrical /

Plumbing

Matrix Consulting Engineers, Inc

Food Service

Reitano Design Group

Technology & Security

Communications by Design

Sustainability

Catalyst

Aberdeen Elementary School Schematic Design Narratives

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TABLE OF CONTENTS

SCHEMATIC DESIGN NARRATIVE INTRODUCTION

ARCHITECTURAL DESIGN NARRATIVE

CODE NARRATIVE

SITE & LANDSCAPE DESIGN NARRATIVE

STRUCTURAL ENGINEERING NARRATIVE

MECHANICAL / ELECTRICAL / PLUMBING NARRATIVE

TECHNOLOGY & SECURITY NARRATIVE

FOOD SERVICE NARRATIVE

ACOUSTIC NARRATIVE

SUSTAINABILITY NARRATIVE

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SCHEMATIC DESIGN NARRATIVE

INTRODUCTION

The new Aberdeen Elementary School in Grand Rapids, Michigan, is envisioned as a modern, efficient, and inspiring educational facility to consolidate the current Aberdeen Academy and Palmer Elementary

Schools. Serving 450 scholars in grades PK-5, the two-story structure, with a gross floor area of 63,000 square feet, will be constructed on the existing Aberdeen site while keeping the current school operational during construction. This project represents a significant investment in the community’s educational future, offering a state-of-the-art learning environment that fosters collaboration, creativity, and growth.

This project is part of the Grand Rapids Public Schools Facilities Master Plan with the goal to ensure that school resources are streamlined toward scholar achievement. The Facility Master Plan will invest, enhance, upgrade and revitalize the school facilities to serve the scholars of the Grand Rapids Public

Schools in more effective, efficient, and equitable ways.

The design process has sought feedback on the educational facility programming and schematic design options from many stakeholders including the Facilities and Operations team, the Academic Team, including school principals, educators, department leaders, community members, and representatives of the City of Grand Rapids, such as the Engineering Department, Fire Department, Parks and

Recreation, and Planning departments. The Schematic Design Phase will include tours of other state of the art facilities and community meetings to seek further input from parents, scholars and other community members.

The Schematic Design Narrative is the next step in the design and construction process. It is a description of the project, based on the visioning process, to expedite the preparation and review of the

Schematic Design and Design Development submittals. The purpose of this document is to communicate the scope of work required for construction to the Grand Rapids Public Schools, the Construction

Manager Miller-Davis, and the project cost estimators from Blundall & Associates, to ensure that the scope, schedule and budget are in alignment.

The Schematic Design Narrative presents the basic information, criteria, logic, evaluations and considerations developed in each category of design to prepare the Schematic Design (SD) plans. It documents the reasoning and decisions made during the SD phase. The SD phase finalizes the overall interior and exterior concept in terms of general size and location of spaces; the type of construction;

the kinds of mechanical, electrical and plumbing systems; and the general characteristics of the technology systems and sustainability goals to achieve LEED Certification.

Upon completion of the SD phase the process moves to Design Development (DD) where the specifics of each building component are defined. During the DD phase a Design Development narrative will be prepared as the basis for the construction documents used during the building of the structure.

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ARCHITECTUAL DESIGN NARRATIVE

BACKGROUND

The proposed Aberdeen Elementary School consists of a new structure located southeast of the existing

Aberdeen Academy. The primary occupancy group of the building shall be Group E – Educational, with non-separated accessory groups for Group A - Assembly A-2 (Dining) and A-3 (Gymnasium), and Group B

– Offices, resulting in a mixed-use occupancy facility. The proposed program includes spaces to support administrative offices, 3 sections of classrooms for each grade level, Special Needs, Title 1 and Reading coaches, Music, Art, Physical Education, a Makerspace, a Library/Media Center, Food Services, and support spaces.

The two-story facility will be 63,000 GSF and consists of a program of spaces to support 450 scholars in grades PK-5. The building will be non-combustible construction meeting Type II-B construction requirements, primarily a steel structural frame with some load bearing concrete masonry walls, a steel roof deck and composite steel and concrete floors. The dividing walls between offices and classrooms will primarily be metal studs and gypsum wallboard. Walls in the gymnasium will primarily be of concrete masonry units. The exterior cladding of the building will be a combination of brick veneer and metal panels. The roof will be a single ply membrane roofing material. The building will be fully sprinklered with a fire suppression system. Although not yet fully adopted.

It is a goal to salvage portions of the existing terracotta features from Aberdeen Academy for reinstallation on the new Aberdeen Elementary School.

The building will be designed to meet LEED Certification requirements with a minimum of 40 points required.

SITE

The site will have one new main parking lot for staff and visitors with a total of 78 parking spaces which will include a pickup and drop-off area at the main entrance for parents. There will be a separate bus area to support Aberdeen as a bus transfer location to accommodate approximately 7-9 buses at a time.

A service drive to the south will support receiving, recycling, and trash service.

The locations of emergency vehicle access, water supply, hydrant locations, and the Fire Department

Connection (FDC) shall be reviewed and approved by the Grand Rapids Fire Department.

The site layout will maintain the existing softball and soccer fields on the southwest corner of the site adjacent to Aberdeen Park.

The existing Aberdeen Academy will remain in use throughout construction with access to parking, parent pick up and drop-off areas, bussing, deliveries, and outdoor play areas which will be fenced off to provide separation from construction areas.

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MATERIALS AND FINISHES

EXTERIOR

Exterior Walls and Glazing Systems:

1. Typical exterior wall construction consists of brick masonry cavity wall with cold-formed metal framing with cavity insulation and air/water barrier. Exterior wall at Gymnasium and Cafeteria to have CMU cavity wall with brick masonry veneer. Exterior cladding to be as follows:

a. 4” brick masonry veneer at 70% of exterior wall area

b. Brick will be utility size

c. Aluminum composite metal panel with Kynar 500 finish at 10% of exterior wall area

2. Typical exterior wall to have 8” CMU, with 12” CMU at high-bay spaces

3. Exterior glazing systems consist of thermally broken aluminum windows, storefronts, and curtainwalls.

a. Exterior glazing systems to be 30% of exterior wall area

b. Basis of Design for aluminum storefronts: Special-Lite SL-450/SL-600

c. Exterior glazing to be 1” insulation glazing with low-e coating on the #2 surface. Typical insulating glazing unit to have tempered glazing, with laminated glazing at the main entrance vestibule.

4. Coping, flashing and counterflashing shall be aluminum and be finished to match in appearance exposed aluminum items such as windows, doors, grilles, and louvers.

Doors:

1. Exterior doors at aluminum glazing systems to be thermally broken aluminum doors, Basis of

Design is Special-Lite SL-15.

2. Exterior service doors and frames to be thermally broken hollow metal. Exterior overhead doors to be insulated steel with custom color finish.

Roofs:

A. Low sloped roofs to have 1/4” per foot slope, minimum and to have fully-adhered 60 mil EPDM roofing. Roofing assembly to also include sheathing, vapor barrier, coverboard and minimum R-

30 insulation above metal deck.

B. For roofing accessories, assume walkway pads, thermally broken roof hatches, and galvanized roof ladders.

INTERIOR

Interior Construction

1. Partitions: Refer to Acoustics section of the narrative for STC requirements.

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a. Fixed Partitions:

1. CMU Partitions:

a. All gymnasium partitions to be CMU partitions that extend to the underside of deck above, and will have a two-inch high joint at the deck filled with acoustical sealant for sound. Provide ground face CMU units at corridor side of all corridor partitions.

b. Interior face of CMU walls/partitions to be ground face CMU at Gymnasium

a. Alternate: Painted CMU Partitions at Gymnasium

c. Exception for fire-resistance-rated partitions – or smoke partitions: The joint will be filled with firestopping.

2. Firestopping will be installed where fire-resistance-rated wall assemblies are through-penetrated.

b. Metal-Stud Partitions:

1. All other demising partitions to be metal-stud partitions. The studs will be fabricated from steel of standard thicknesses and formed into channel shapes of various depths based on the required vertical span. The metal surface will be electro-galvanized for corrosion-resistance.

2. All Metal-stud partitions will include acoustical batt insulation and acoustically rated seal at at head and base.

3. Metal studs partitions are to extend to the underside of deck above and stop a minimum of 1 inch from the deck and will engage – but not be secured to – a deep-leg channel secured to the structure above.

4. Refer to Interior Finishes for gypsum board properties.

c. CMU Wall Furring:

1. 3/4" channels and 5/8” gypsum board.

2. Furring to extend minimum 4” above the ceiling plane.

3. Pending: delete drywall furring

2. Interior Doors:

a. Swinging Doors:

1. Solid-core wood doors will be provided in hollow-metal frames with selected hardwood face veneer and vision panels. Stained finish.

2. Hollow metal doors will be Level 3 and Physical Performance Level A (extra heavy duty), Model 2 (Seamless) or Model 3 (Stile and Rail). Painted finish.

3. Exception at openings as required by the authorities having jurisdiction): Doors, frames, and door hardware will be fire-resistance-rated to the required hourly rating.

b. Frames: 0.053 inch thick (16 gauge) HM frames.

c. Interior doors and sidelites, and interior windows will be glazed with tempered glazing, unless fire-rating is required.

d. Hardware shall be heavy-duty grade with necessary ratings and ADA egress hardware. Provide automatic door operators at main entrance vestibule.

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3. Operable Partitions and Doors

a. Manually operated, folding glass panel, paired panels

1. Basis-of-Design: Modernfold, Acousti-Clear, STC 45.

b. Overhead Rolling Grilles, motorized

1. Servery

2. Basis of Design: Cornell Visionaire Model ESG10

4. Fittings:

a. Visual Display Boards:

1. Markerboards will be balanced, high-pressure, factory-laminated markerboard assemblies of three-ply construction consisting of a backing sheet, a 3/8-inch thick particleboard core with a 0.005-inch thick aluminum-foil backing, and 0.021-inch thick, porcelain-enamel face sheet with a high-gloss finish

a. Basis-of-Design: Claridge: LCS Elite

2. Tackboards will be polyester fabric factory-laminated to 7/16-inch thick fiberboard or 1/2-inch thick mineral fiber board.

a. Basis-of-Design: Claridge: Edge Wrapped Tackboard

b. Custom display cases will be in the wall at the art room area. They will include:

1. Recessed cabinet with anodized extruded-aluminum angle trim.

2. Glazed doors.

c. Signage:

1. Dimensional building letters identifying the building will be provided on the exterior of the building.

2. Interior panel-style signage will be provided:

a. In the main entrance corridor.

b. At corridor intersections.

c. Adjacent to individual door openings.

d. Handrails: See STAIR CONSTRUCTION below.

e. Toilet and Bath Accessories: Coordination will take place between GRPS and the design team to implement GRPS provided accessory specifications and OFCI (Owner furnished, contractor installed) and CFCI (contractor furnished, contractor installed) items. Manufacturer and model numbers shall be provided to the design team for Owner furnished items. The following will be provided

1. Soap dispensers (OFCI)

2. Toilet roll dispensers (OFCI)

3. Paper towel dispensers and disposal units (OFCI)

4. Sanitary Napkin Disposal (OFCI)

5. Waste receptacles (CFCI)

6. Stainless-steel framed mirrors (CFCI)

7. ADA Grab Bars (CFCI)

8. Electric Hand Dryers (CFCI)

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9. Mop and broom holders. (CFCI)

f. Cubbies & Lockers to be provided for students and at shared staff work areas. Types and locations to be determined in design development.

g. Gym wall pads to be provided at Gymnasium

h. Telescoping Stage at Gymnasium – add BOD Information (alternate)

Casework

1. Classroom Casework:

a. Provide 10LF per classroom (per GRPS standards)

b. Finishes: all base, upper and storage cabinets to be plastic laminate with solid surface countertop, include 4” solid surface backsplash.

c. Casework to be constructed of hardwood-plywood and hardwood. Wood veneer with Quartz or manufactured stone countertops to be provided at specialty millwork and high-profile areas. Minimum standard for all other areas to be solid surface and any counters with a sink. Refer to Food Service section for additional information.

Stair Construction

2. Stair Construction:

a. Stringers will be structural steel channels with welded 1/8-inch thick cover plate, unless otherwise noted.

b. Treads and landings will be 2-inch deep concrete-filled metal pans. The underside of treads will be concealed with 1/4-inch thick steel plate.

c. Stainless steel handrails at all stair locations

d. Steel guardrails and handrails all other locations. Painted.

e. Guardrails:

1. Height: 42-inches above adjacent tread or landing elevation.

2. Top Rail: 2-inch diameter

3. Vertical Post: 1 1/4-inch diameter

4. Infill between Posts: Perforated metal at balcony and learning stair, pickets at exit/circulation stairs, unless otherwise noted.

f. Handrails: 1 1/4-inch inside diameter and tube handrails attached with 3/4-inch diameter bent bar to vertical posts of adjacent guardrails, as indicated.

1. Exception at Walls: Attach to walls with standard support brackets.

3. Stair Finishes:

a. Typical Landings and treads will be covered with resilient flooring with rubber nosings.

Refer to Interior Finishes section for more information.

b. Circulation stair adjacent to Learning Stair to be polished concrete with integral metal stair nosing, Basis-of-design: Schluter – TREP-EFK.

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Interior Finishes

A. Materials must meet low-emitting criteria, be sourced sustainably, have recycled content, and be installed with energy efficiency in mind, clearly stating the relevant LEED credit and requirements for each material category ensure compliance LEED v4.1 rating system.

B. In addition to the Interior Finish Table requirements, the following will be implemented as general design features throughout project:

1. Corner Guards: Provide full height recessed corner guards at all high traffic gypsum wall board external corners.

2. Wall Protection: Impact-resistant wall covering at select circulation spaces, janitor closets, and select back of house spaces.

3. Wall Base: Provide rubber wall base of 4” high at all gypsum board and CMU walls.

Burnished block and tiled walls to not receive wall base.

4. Corridor Walls:

i. Any non-CMU/ground face block walls to receive Scuffmaster Paint (SP).

Assume large sections of tack surface (TS).

5. Drinking Fountains: All walls behind drinking fountains must have ceramic tile finish up to

4’-0” AFF minimum.

6. Acoustic Panels: Acoustic wall panels and ceiling treatments such as baffles, wall panels, acoustic deck and others may be used at specific areas such as Gymnasium, Commons, Music Room. Amount and locations will be determined during Design Development Phase.

a. Kitchen/Servery: Provide one full height ceramic tile wall in Servery, all other walls to be epoxy painted CMU.

b. Transitions Strips: Metal transition strips to be used at flooring material changes, wall tile exposed edges and at floor to wall tile transitions.

C. Wall Finishes:

1. Metal-stud partitions will be finished with 5/8-inch thick Tyle X abuse/mold-resistant gypsum panels, complying with ASTM C1629, Level 2 requirements.

a. Exception for portions of walls above 8-10 feet: The Contractor will be allowed to use moisture and mold resistant gypsum board.

2. At the top of fire-resistance rated partitions:

a. Gypsum Wallboard: A 1 1/2-inch high joint will be provided at the deck above – and the joint will be filled with firestopping (or mineral wool) based on the required hourly rating.

3. Level 04 finish required at flat paint locations. Level 05 finish required at all semi-gloss paint and wall-covering locations.

4. High performance coating required at exposed steel structure in central LRC/Commons area.

5. Ceramic wall tile will be provided at (2) wet walls, half-heights in all single-user restrooms.

6. Ceramic wall tile will be provided on all group restroom walls, half-height.

7. Assume 300SF of tackable wall surface in each classroom (TS) and tile at backsplash where casework occurs in classrooms.

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8. Wall graphics:

a. Assume areas of custom graphics printed on type II wallcovering applied over level

5 gypsum wall finish in Cafeteria and Commons.

9. Acoustical wall treatment:

a. Cafeteria will consist of areas of acoustic wall treatment.

b. Pending: Assume 1500SF of tackable surface in commons area

10. Commons Feature Wall:

a. The commons will feature a 2-story feature wall with wood or other accent material (900 sf):

1. Base Bid: Rulon – Panel Grille

2. Bid Alternate 1: Soelberg – Raggio Plywood Panels

3. Bid Alternate 2: Turf – Scanline Panels (custom image)

D. Floor Finishes

1. Corridor/Circulation Floor Finish:

a. Base Bid: Polished Concrete

b. Bid Alternate 1: Rubber Tile, RT

c. Note: Polished concrete finish not recommended at concrete topping at precast planks at second floor slab, review with district.

2. Cafeteria Floor Finish:

a. Base Bid: Polished Concrete

b. Bid Alternate 1: Rubber Tile, RT

3. Core Academics Classrooms will have CPT-02 carpet tile, assume area of resilient floor at casework/sink locations.

4. Sealed concrete in mechanical, building service and storage areas.

5. Polished Concrete: Desired level of aggregate exposure is “salt-and-pepper”. Grind concrete to desired aggregate exposure and polished to 800 grit. Grinding and polishing steps are all at least 3 passes:

a. 50 grit wet

b. 120 grit wet

c. 220 grit wet

d. 400 grit wet

e. Hardener-Densifier

f. 800 grit dry

g. Concrete Dye

h. Top Coat

b. Porcelain tile will be used in restrooms.

c. Gymnasium Floor will be a synthetic system.

E. Ceiling Finishes:

1. Refer to Basis of Design Finish Table and Room Finish Schedule below for typical ceiling types.

2. Commons Ceiling will be composed of various ceiling materials:

a. 3,000 SF: Painted exposed structure / MEP

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b. 1,500 SF: Arktura – SoundAngle Baffles or Turf – Plate Clouds

3. Assume the following typical ceiling heights:

a. Offices 9’-0”H

b. Restrooms 8’-0”H

c. Core Learning Spaces 10’-0”

d. Circulation 10’-0”H with areas of 9’-0”

4. Gypsum board ceilings, soffits, and bulkheads will be used at various locations. Gypsum board will be painted.

5. In general, mineral fiber panels with a highly light-reflective and sound-absorptive surface will be laid in exposed 24- by 24-inch grids of inverted T-shaped metal. Acoustical ceilings are to be

2’x2’lay-in acoustical ceiling tile, see finish table below for more information.

6. There will be painted exposed structure in areas such as the gymnasium, commons, and mechanical room.

7. Provide 50% ceiling coverage of Specialty Ceiling Type 3 (see table below) at Music.

i. Pending: revise to 25% at gymnasium, music room and cafeteria

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Interior Room Finishes

Finish Abbreviations:

Basis of Design Finish Table

Material Type Manf. Product

Typical Carpet Tile, Student Spaces, CPT-01

Tarkett Create Balance, Powerbond

Typical Carpet Tile, Staff Spaces, CPT-02 Tarkett Cache Tweed, Powerbond

Typical Carpet Tile, Student Accent, CPT-03 Tarkett ColorKnit, Powerbond

Accent Carpet Tile, Breakout, CPT-04 Forbo Flotex Planks - Refract Planks

Walk-Off, CPT-05 Tarkett Abrasive Action II, Powerbond

Floor Tile, TL-01 Virginia Tile Modern Oasis, 12x24

Wall Tile, TL-02 Virginia Tile Chroma, 3x10

Wall Tile, Specialty Accent, TL-03 Virginia Tile Beachgroup Glass, Palms Mosaic

Resilient Floor, RF-01 Forbo Marmoleum Modular

Rubber Tile, RT Nora Environcare Rubber Tile, 3mm

Rubber Stair Tread + Landings, RST Nora Norament 926 Stairtreads

Polished Concrete, PLC See Description Above

Sealed Concrete, SCE See Description Above

Resinous Flooring, EPXF Dur-A-Flex Dur-A-Chip

Athletic Gym Flooring, AGF Robbins Synthetic -Pulastic

Wood Flooring (Learning Stair) Nydree Maple Acrylic Hardwood

Paint, P Benjamin Moore Ultraspec 500

Tack Surface, TS Forbo Pinboard Linoleum

Scuffmaster Paint, SP Scuffmaster ScrubTough

High Performance Coating, HPC Benjamin Moore Corotech High Performance

Coatings

Typical Acoustic Ceiling Tile, ACT-01 Rockfon Education Plus 2’x2’

Scrubbable Acoustic Ceiling Tile, ACT-02 Rockfon Education Plus 2’x2’

Kitchen Acoustic Ceiling Tile, ACT-03 Rockfon Hygienic Plus 2’x2’

Specialty Ceiling Type 1 Arktura SoundAngle Baffles

Specialty Ceiling Type 2 Turf Slice

Specialty Ceiling Type 3 - Music Accent Kinetics Noise Control Pyramidal Sound Diffuser 2’x2’

Wood Ceiling Rulon Aluratone 700 Acoustic Wood Wall

Panels

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INTERIOR ROOM FINISH SCHEDULE

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ROOM LIGHTING SCHEDULE

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BUILDING PROGRAM

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CODE SUMMARY NARRATIVE

OVERVIEW

The governing codes enforced by Michigan Department of Licensing and Regulatory Affairs (LARA) current construction codes are as follows:

*Bureau of Construction Codes (BCC)

• Construction of School Buildings Act 306 of 1937

• **2021 Michigan Building Code-International Building Code 2021 (IBC 2021 with amendments), effective April 9, 2025

• 2021 Michigan Plumbing Code, effective March 12, 2024

• 2021 Michigan Mechanical Code, effective March 12, 2024

• 2023 Michigan Electrical Code based on the 2023 National Electrical Code (NEC) w/ Part 8 State

Amendments, effective date March 12, 2024

• 2015 Michigan Energy Code, effective date September 20, 2017 (note: Michigan will adopt an updated Energy Code in April 2025)

• Boiler Code, effective May 3, 2023 o ASME Boiler and Pressure Vessel Code, section I, II, III, IV, V, VII, IX, X, XI, 2019 edition o ASME code B31.1, 2018 edition o ASME code CSD-1, 2018 edition o 2019 National Board Inspection Code o 2016 PA 407 Skilled Trades Regulation Act

• Elevator Code, effective July 11, 2014 o 2010 ASME A17.1 Safety Code for Elevators and Escalators o 2011 ASME A18.1 Safety Standard for Platform Lifts and Stairway Chairlifts o 2009 ASME A90.1 Safety Standard for Belt and Manlifts o Elevator Safety Board General Rules

Bureau of Fire Services (BFS)

• 2012 Michigan Life Safety Code New and Existing School, College, and University Fire Safety

Rules; 2012 NFPA 101 Life Safety Code with Michigan amendments, effective May 19, 2016

• 2010 NFPA 13, 13D & 13R

• 2013 NFPA 72 Fire Alarm Code

* Note: The Bureau of Construction Codes (BCC) under LARA typically has jurisdiction for all school projects in Michigan unless that jurisdiction has been delegated locally. It is the design team’s understanding that the agency having jurisdiction (AHJ) on this project regarding the building codes is the City of Grand Rapids Code Compliance department.

The project must be reviewed by the Bureau of Fire Services (BFS) regarding the 2012 NFPA 101 Life

Safety Code with Michigan amendments, including review by the Grand Rapids Fire Department for rule

6 of the Life Safety Code.

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Accessibility and universal design are governed by both 2009 ICC A117.1 Accessible and Usable Buildings and Facilities and the Michigan Barrier Free Design Law of Public Act 1 of 1966 as amended.

**Note: LARA filed the new 2021 Michigan Building Code on December 10, 2024, and it is scheduled to take effect statewide on April 9, 2025.

BUILDING OCCUPANCY USE TYPE

The building occupancy use group will be defined in both Michigan Building Code as follows.

• Educational Group E (Elementary School grades PK through 5) (MBC 2021)

• Additional accessory, non-separated occupancy groups to include:

o Storage Group S-1 Accessory (Moderate-hazard storage) Group A-2 Accessory (Dining) o Assembly Group A-3 Accessory (Multi-Purpose Gym, Media Center) o Business Group B Accessory (Administration)

Per NFPA 101-6.1.14 each portion of the building shall be classified as to its use in accordance with

Section 6.1. The building shall comply with the most restrictive requirements of the occupancies involved unless separate safeguards are approved (6.1.14.3.2). Therefore, the Occupancy Use Type for

NFPA 101 shall be as follows:

• Mixed-Occupancy – Educational and Assembly (NFPA 101-2012)

As a mixed-occupancy facility, the maximum dead-end corridor length is 20’-0”.

BUILDING CONSTRUCTION TYPE

Per 2021 Michigan Building Code Chapter 6, the building will be classified as construction Type II-B. The fire rating requirements from Table 601 are as follows:

Building Element Rating in HRS

Primary Structural Frame 0

Bearing Walls-Exterior 0

Bearing Walls-Interior 0

Nonbearing Walls 0

Floor Construction 0

Roof Construction 0

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BUILDING HEIGHT LIMITATIONS

Per 2021 Michigan Building Code, Table 506.2 the allowable area for a Group E, fully sprinklered, multi-story building of Type II-B construction is as follows:

• Limitation on building area: 43,500 ft2

• 43,500 ft2 for Educational Occupancy Classification

• First floor of the new Aberdeen Elementary School to be within the 43,500 SF allowable area.

Per Michigan Building Code 2021, Table 504.4 the allowable number of stories for a sprinklered building of Type II-B construction classified as an Educational Occupancy is as follows.

• Limitation on number of stories: 3

• Anticipated number of stories: 2

Per Michigan Building Code 2021, Table 504.2 the allowable building height above grade for a sprinklered building of Type III-B construction classified as an Educational Occupancy is as follows.

• Limitation on building height: 75’ above grade plane Anticipated building height: 41’-6”

VERTICAL OPENING PROTECTION

Under NFPA 101 Life Safety Code, all vertical openings between floors must be protected. This includes openings at shaft enclosures, stairways, elevators, and high-volume spaces. Several potential design options are available for providing this protection, including full enclosure, partial enclosure, convenience opening, communicating space, and atrium.

Full enclosure with rated walls will be provided at the egress stairs and at the elevator shafts. With a fully sprinklered facility, it is anticipated 1-HR full enclosures will be required at the egress stairs and elevator shaft.

It is anticipated that a high-volume space will be provided at the media center, providing connection between the first and second floors.

Per NFPA 101 Life Safety Code, this two-story high-volume space will be treated as a communicating space. A communicating space in a fully sprinkled building shall be separated from the remainder of the building by a 1-hour smoke barrier with 20-minute rated opening protection. The corridor partition types for the first second floors shall be a 1-hour smoke barrier. Occupants within the second floor area must be provided with at least one means of egress without traveling vertically through the communicating space. Two classrooms on the second floor will require additional egress doors, and all classroom doors in that corridor will require closers.

MEANS OF EGRESS

Occupant loads will be calculated based on 2021 Michigan Building Code, table 1004.1.2.

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Per 2021 Michigan Building Code, table 1006.3.1, the minimum number of exits required will be based on the total occupant load calculated per story. A total occupant load of between 500 and 1000 is anticipated at this point that will require 3 exits. Current plans anticipate 3 exit stairs discharging directly to grade from the second level with an additional 5 exits from the first level.

Minimum corridor width of 72” is required by both the Life Safety Code and the 2021 Michigan Building

Code. Egress stairs shall be sized to 0.2 inches per occupant and corridors and egress doors shall be sized to 0.15 inches per occupant.

Travel distance access to the exits is restricted to a maximum of 250’ for a fully sprinklered building per

Michigan Life Safety Code 2012, section 14.2.6.3. The maximum for dead end corridors in a fully sprinklered building is 50’. Maximum common path of travel is limited to 75’ for a fully sprinklered building. The maximum dead-end corridor length is 20’-0” as a mixed-occupancy facility.

MINIMUM INTERIOR FIRE-RESISTANT RATINGS

Minimum fire resistance ratings for interior partitions shall be as follows:

• 1-Hour Fire Barrier:

o Egress Stair enclosure partitions and elevator shaft enclosure o Storage areas greater than 100 ft2 o Storage areas for contents requiring a rated enclosure o Separation between Assembly and Educational Occupancy (per NFPA 101, 6.1.14.4)

• Smoke Partitions (per 2012 Michigan Life Safety Code, Section 8.4) o Corridors at classroom wings.

o Typical classroom doors are exempt from having closers at smoke partition corridors.

• 1-Hour Fire Curtains (per 2012 Michigan Life Safety Code, Section 8.6.6(4) o Second Level only at the high-volume space over the Media Center.

o Openings which are not smoke rated are to be protected with smoke curtains.

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SITE & LANDSCAPE DESIGN NARRATIVE

LOCATION

A. General: The location of the proposed Aberdeen Elementary School is on the existing school site at 928 Aberdeen Street NE in Grand Rapids, MI. The existing school site is approximately 8.7 acres. The replacement school is proposed to be constructed at the southeast corner of the site and designed in a way to allow the existing school to remain in operation until the new school is completed. The original school will be demolished after construction to allow the construction of the parking lot, bus loop, car drop-off drives, and other sitework.

B. The proposed bus loop will accommodate 7-9 buses. Transportation staff indicated that the Aberdeen school will also serve as a bus hub site. Students may be brought to

Aberdeen, dropped off and will wait for another bus to take students to their assigned school locations.

C. Service and delivery vehicles will access the site from a proposed drive from Evelyn

Street from the street just south of the site. The service area will accommodate trash and recycling enclosure. The service area will also accommodate deliveries of meals prepared off site.

D. Existing Site Trees: An effort will be made to save as many existing trees as possible on site including the existing Honeylocust trees along the Aberdeen Street Right-of-Way.

The site also has other significant trees that will be saved where possible. There is an existing Memorial tree in the playground area that will need to be protected or relocated.

E. Maintain existing public sidewalks along Aberdeen and Diamond streets.

SITE IMPROVEMENTS

A. General Site Grading: The proposed school will be two stories. The design intent is to have the main school entry located at the upper level of the site. The proposed dimension from lower floor to upper floor is about 13’-4”. The main entrance will be on the north side of the building, connected to the parking lot, bus drop, and playground by a pedestrian bridge. Transitional grading and site fill may be required along the car drop-off drive to accomplish the transition to existing site grades.

B. Stormwater Management: The proposed school will be two stories. The design intent is to have the main school entry located at the upper level of the site. The proposed dimension from lower floor to upper floor is about 13’-4”. The main entrance will be on the north side of the building, connected to the parking lot, bus drop, and playground by a pedestrian bridge. Transitional grading and site fill may be required along the car drop-

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C. Parking: The proposed parking area will accommodate 78 cars as required by the district. Two additional spaces will be provided in the service area for maintenance.

D. The proposed parent drop-off loop will accommodate up to 40 cars if all drive lanes are used. The parking lot pavement section will consist of 8 inches of crushed aggregate and 3 inches of asphalt installed in two lifts.

E. Site Bridge: A site bridge will be provided, connecting the parking lot and parent drop off walks to the main school entry. The bridge will be about 20 feet wide with an overhead canopy system to provide protection from rain and snow. A snow melt system will also be provided in the bridge surface.

F. Bus Drop Loop: The bus loop drive will be about 28 feet wide with concrete curb and gutter with a pavement section consisting of 8 inches of crushed aggregate and 6 inches of asphalt installed in several lifts. A 10’ feet wide curbside walkway will accommodate student access to the buses and provide a connection to the main entry to the school at the north side of the building.

G. Trash Enclosure: A single wythe masonry enclosure designed to accommodate one 6 CY trash and one 6 CY recycling container at about 12-feet depth, 25-feet wide, and 8-feet height screen wall with gates.

H. On-Site Walks: Concrete walks will be constructed along the car and bus drop areas providing clear access to the school. These walks will be 10-feet in width. Other site walks will be a minimum of 6 feet width.

I. Site Stair: Provide a new concrete site stair with snow melt system just west of the new school near the kindergarten classrooms providing pedestrian access from the existing playground and parking areas down to the lower level and proposed playground area for school and public access and use. Preferred rise dimensions are 5 inches minimum, 7 inches maximum with no more than 10 steps per run. Treads shall have a non-slip finish, 11 inches deep minimum.

J. School Crossing: Provide access from the school to the public sidewalks along Aberdeen

Street to the north and Diamond Avenue to the east. Maintain existing public walks within the ROW of these streets during construction.

K. Site Furnishings: Provide and install bike parking loops to accommodate at least 20 bicycles. Provide 6-length metal benches with powder coat finish at the main entry and at the bus loop to accommodate students waiting for cars and buses. Provide metal seating and waste receptacles at the main entry, bus waiting area, and at the playground entry. Site Furnishings shall be selected as a designed family of furnishings from a single manufacturer per District standards.

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L. Play Areas: Provide and install cushioned soft play areas with fixed play equipment and cushioned fall surfacing to meet an 8-feet fall height. Synthetic turf surfacing with sand infill over a 3-inch minimum thickness fall pad over a 5-inch thick, clean aggregate drainage layer and non-woven filter fabric over compacted subgrade will be installed in the existing playground and new playground areas.

M. Sub-surface drainage pipes will be provided below the cushioned synthetic turf at the soft play areas. Drainage will be handled internally through the cushioned material into a 5-inch depth clean drainage aggregate base with 6-inch HDPE perforated pipes that will connect to the storm drainage system. Provide the following age-appropriate play areas.

i. Pre-Kindergarten and Kindergarten Play: Assume the new play area west of the new school to be developed with new surfacing and equipment for PreK and K.

ii. 1st Grade – 5th Grade Play: Assume the existing playground area and equipment will be evaluated for use by 1st through 5th elementary students.

N. Court Play: The court play area will consist of a standard asphalt pavement section that will be striped for court games such as basketball, hopscotch, foursquare, funnel ball and dodge ball. Basketball goals will be installed along the western edge of the court play area. Funnel ball goals will also be provided.

O. Entry Plaza: A new concrete entry plaza will be located at the school entrance supplemented with landscaping, benches, and a waste receptacle. Provide and install stainless steel protection bollards along the parent car drop drive to protect students from potentially errant vehicles while waiting to be picked up in front of the school.

P. Outdoor Courtyards: Provide an outdoor art classroom area with concrete surfacing separated from the outdoor playground with plantings and a low fence. Provide an outdoor dining patio south of the building just outside of the Commons Area. This area will be enclosed with a low fence, low plantings, and will include a walkway extending to the public right-of-way to provide code required egress.

Q. Monument Sign: A new stone and masonry monument sign will be located at the northeast corner of the site. The sign will be internally lit.

R. Chain Link Fencing: All fencing shall be black PVC coated Class 2B with a steel core of 9-gauge. Provide 4 feet high fencing around the Pre-K, 6-feet height fence between the playground and the road, and 12 feet high fence with a 4 feet hood for basketball backstops. Provide 6 feet height PVC black coated chain link fencing around the Pre-K, Grades 1-5 soft play, and court play areas as shown on the Site Plan.

SITE LANDSCAPE IMPROVEMENTS

A. Landscape plantings of low shrubs and groundcover plantings will be designed to provide seasonal color and visual interest. Plant materials will be selected to provide a

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B. Overstory Trees: Plantings of shade trees will be located to provide shade for parking and play areas, and the south and west facade of the building to reduce solar heat gain.

The planting layout will serve to reinforce the drives and pedestrian circulation.

C. Ornamental Trees: Plantings of ornamental trees will be located to further reinforce site lines and circulation patterns. These trees will provide seasonal interest and color from spring blooms to fall foliage.

D. Shrubs, Ornamental Grasses, and Perennials: Planting beds of these materials will be focused on main building entries and along the new pedestrian spine at the round-about and existing upper parking lot. Plantings will be selected for low maintenance, drought tolerance and will provide seasonal interest for foliage and bloom colors.

E. Plantings at Site Bridge: Provide low groundcover on the existing slopes below the bridge and a dry creek bed with aggregate to provide low maintenance and a graceful design solution that accommodates positive site drainage.

F. Limestone Seating Blocks: Provide and install 2’ W. by 6’ L. by 18” H. Limestone seating blocks with sawed tops and bottoms with natural split sides will be in addition to the proposed metal benches in locations per the Drawings.

G. Planting Bed Mulch: Planting beds will have a 3-inch depth of natural shredded hardwood mulch. A chemical weed barrier will be installed over the planting soil and on top of the mulch to prevent and control weed growth.

H. Concrete Maintenance Curb: A 12-inch wide by 6” thick reinforced concrete mow strip will be provided around the building wall, below site fencing, and to edge planting beds areas to reduce trimming maintenance and promote drainage away from the building.

This concrete curb will also be constructed at the perimeter of the cushioned play areas as a nailer board for attachment of the cushioned synthetic turf system.

I. Turf Seeding: Install turf seed with hydromulch cover overall disturbed site lawn areas.

Install turf sod on the multi-purpose athletic fields to allow for playability when the school opens. Turf seed will be a drought tolerant tall turf type Fescue blend with 10%

Bluegrass.

J. Maintenance and watering of all existing and proposed landscape areas will be required during construction and will continue for 60 days following Substantial Completion.

K. Existing Tree Protection: Provide temporary tree protection fencing consisting of chain link fencing for all existing trees to remain during construction. Fencing to be installed at the dripline of all trees or groupings of trees to remain.

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L. Irrigation System: Provide an in-ground smart control sustainable irrigation system for the multi-purpose soccer and softball field natural grass areas. Other site lawn and planting areas will not be irrigated.

M. Existing Athletic Fields: The existing athletic field areas may be used for construction staging and will need to be restored with 6-inches of amended topsoil mix, fine graded, and sodded with a Fescue/Bluegrass mix. The play fields will have an automatic in-ground irrigation system for establishment.

SITE RELATED TECHNICAL SPECIFCATION SECTIONS

SPECIFICATIONS

Division 10 – Specialties

Section 107516 Flagpoles

Division 31 – Earthwork

Section 310000 Site Clearing

Section 312000 Earth Moving

Section 313116 Termite Control

Division 32 – Exterior Improvements

Section 321216 Asphalt Paving

Section 321313 Concrete Paving

Section 321373 Paving Joint Sealants

Section 321723 Pavement Markings

Section 321726 Tactile Warning Surfaces

Section 321813 Playground Protective Surfacing

Section 321816 Playground Equipment

Section 322200 Cushioned Playground Base Construction

Section 322020 Concrete Play Court Surfacing

Section 323113 Chain Link Fences and Gates

Section 323300 Site Furnishings

Section 323500 Site Screening Devices

Section 328400 Planting Irrigation

Section 329113 Soil Preparation

Section 329200 Turf and Grasses

Section 329300 Plants

Section 329600 Transplanting

Division 33 – Utilities

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Section 331415 Site Water Distribution Piping

Section 333100 Facility Sanitary Sewers

Section 334100 Storm Utility Drainage Piping

Section 334600 Sub Drainage

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STRUCTURAL ENGINEERING NARRATIVE

INTRODUCTION

Grand Rapids Public Schools will construct a new elementary school on the same grounds as the existing

Aberdeen Elementary School. The new building will be two stories tall and will not connect to the existing structure in any way. In addition to classrooms, the new building will have a main corridor, gym, gym storage, cafeteria, kitchen, music room, art room, offices, learning center, mechanical room, stairs, and an ADA-compliant elevator. Further, exterior canopies are anticipated as well as a bridge on the north end.

ENGINEERING DESIGN DATA

The following structural design criterion will be used for the design of the structure:

Design Stresses

CONCRETE STRENGTH

LOCATION 28 DAYS DENSITY EXPOSURE CLASSES

INTERIOR FOOTINGS 3000 PSI 145 PCF F0, S0, P0 AND C0

INTERIOR SLABS AND WALLS 4000 PSI 145 PCF F0, S0, P0 AND C0

EXTERIOR FOOTINGS 4500 PSI 145 PCF F2, S0, P0 AND C1

EXTERIOR WALLS 4500 PSI 145 PCF F3, S0, P0 AND C1

EXTERIOR UN-REINFORCED SLABS 4500 PSI 145 PCF F3, S0, P0 AND C2

EXTERIOR REINFORCED SLABS 5000 PSI 145 PCF F3, S0, P0, AND C2

BAR REINFORCEMENT ASTM A615 GR. 60 (Fy= 60 KSI)

WELDABLE BAR REINFORCEMENT A706 GR. 60 (Fy= 60 KSI)

WELDED WIRE REINFORCEMENT: ASTM A1064 (Fy= 70 KSI)

POLYPROPYLENE FIBERS: ASTM C1116

STEEL FIBERS: ASTM A820

STRUCTURAL STEEL

W-SHAPES: ASTM A992 (Fy= 50 KSI)

HSS RECTANGULAR: ASTM A500 GR. C (Fy= 50 KSI)

HSS ROUND: ASTM A500 GR. C (Fy= 50 KSI)

PIPE: ASTM A53 GR. B (Fy= 35 KSI)

'M' AND 'S' SHAPES ASTM A572 GR. 50 (Fy= 50 KSI)

ANGLES : ASTM A572 GR. 50 (Fy = 50 KSI)

CHANNELS: ASTM A992 (Fy = 50 KSI)

PLATE:

LESS THAN 1" IN THICKNESS: ASTM A36 (Fy= 36 KSI)VE

1" IN THICKNESS OR GREATER: ASTM A572 GR. 50 (Fy= 50 KSI)

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FASTENERS

HIGH STRENGTH BOLT (USE GROUP 120 U.N.O.)

GROUP 120 ASTM F3125 GRADES A325, F1852 AND ASTM A354 GR. BC

GROUP 144 ASTM F3148 GRADE 144

GROUP 150 ASTM F3125 GRADES A490, F2280 AND ASTM A354 GR. BD

GROUP 200 ASTM F3043 AND F3111

HEAVY HEX NUTS AND WASHERS SHALL CONFORM TO RCSC "SPECIFICATION FOR

STRUCTURAL JOINTS USING HIGH-STRENGTH BOLTS" LATEST EDITION TABLE 2.2 AND

TABLE 2.3.

COMMON BOLT: ASTM A307 GR. A

HEX NUTS: A563 GR. A

WASHERS: ASTM F844

ANCHOR RODS: ASTM F1554 GR. 55

THREADED RODS: ASTM A193 GR. B7 (Fy= 105 KSI)

STEEL STUDS: ASTM A108

DEFORMED BAR ANCHORS: ASTM A1064

MASONRY:

NORMAL WEIGHT CONCRETE DENSITY = 135 PCF

COMPRESSIVE STRENGTH OF MAS. f'm = 2000 PSI

COMPRESSIVE STRENGTH OF CMU = 2000 PSI

COMPRESSIVE STRENGTH OF GROUT = 2500 PSI

MORTAR SHALL BE TYPE M BELOW GRADE AND TYPE S ABOVE GRADE.

BAR REINFORCEMENT ASTM A615 GR. 60 (Fy= 60 KSI)

WELDABLE BAR REINFORCEMENT A706 GR. 60 (Fy= 60 KSI)

WELDED WIRE REINFORCEMENT ASTM A1064 (Fy= 70 KSI)

STRUCTURAL DESIGN REQUIREMENTS

GRAVITY LOADS:

ROOFS

TYPICAL ROOF LIVE LOAD 20 PSF

FLOORS

CLASSROOMS 40 PSF

STAIRS AND MAIN FLOOR CORRIDORS 100 PSF

CORRIDORS ABOVE FIRST FLOOR 80 PSF

LOBBY AND MEETING ROOMS 100 PSF

STORAGE 125 PSF

SLAB ON GRADE

LIVE LOAD 100 PSF

SNOW LOADS:

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GROUND SNOW LOAD Pg= 35 PSF

FLAT-ROOF SNOW LOAD Pf= 27 PSF

SNOW EXPOSURE FACTOR Ce= 1.0

SNOW LOAD IMPORTANCE FACTOR Is= 1.1

THERMAL FACTOR Ct= 1.0

DRIFTING AND/OR SLIDING SNOW HAS BEEN INCLUDED.

WIND LOADS:

ULTIMATE WIND SPEED 120 MPH

RISK CATEGORY 2

WIND EXPOSURE B

INTERNAL PRESSURE COEFFICIENT 0.18

SEISMIC DESIGN DATA:

RISK CATEGORY 3

SEISMIC DESIGN CATEGORY D

SPECTRAL RESPONSE COEFFICIENTS

Ss= 0.07

S1= 0.043

SDs= 0.075

SD1= 0.069

SITE CLASS D

BASIC SEISMIC-FORCE-RESISTING SYSTEM

INTERMEDIATE REINFORCED MASONRY SHEARWALLS

STEEL SYSTEMS NOT SPECIFICALLY DETAILED FOR SEISMIC RESISTANCE.

DESIGN BASE SHEAR Cs*W KIPS

SEISMIC IMPORTANCE FACTOR Ie= 1.25

SEISMIC RESPONSE COEFFICIENT Cs= 0.03125

RESPONSE MODIFICATION FACTOR R= 3.0

SOILS AND FOUNDATIONS

For all soil-related information, refer to the geotechnical report by Driesenga & Associates, IN., Project

No. 2431017.3A, dated 12/31/24.

Isolated spread footings and strip footings are anticipated for use on this project. Exterior footings will extend a minimum of 3’-6” below grade to prevent frost heave.

In general, exterior strip footings supporting a CMU/brick cavity wall will be 24 inches wide by 12 inches thick with a concrete stem wall. The stem wall will be notched to form a brick ledge. The elevation of the brick ledge will change to follow the grade. The concrete stem wall's expansion, contraction, and construction joints will align with the brick joints (25’-0” max spacing). At the auditorium, the wall footings will be wider to support the heavier loads. The north side will have a bridge with much more significant footings and wall reinforcement that elsewhere.

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All slabs-on-grade will be 4” concrete reinforced with 6x6-W1.4x1.4 WWR on granular fill over a 10-mil vapor barrier with saw cuts no greater than 15’-0” o.c. The slab in the gym will be recessed to accommodate the wood floor. Supported exterior slabs, or stoops, will be provided at all entrances.

STRUCTURAL SYSTEMS

Main Corridor

The corridor space will have…