Project Information

Bid Title

Operable Wall Replacement

Issuing Agency

Bridgeton city

Location

Missouri

Published Date

May 15, 2026

Closing Date

Jun 9, 2026

Government Level

State & Local

Status

Closed

Original Source

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Bid Documents

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Project Description

Bid Title:	Operable Wall Replacement
Category:	Parks and Rec
Status:	Open

Publication Date/Time: 5/15/2026 3:00 PM Closing Date/Time: 6/9/2026 10:00 AM Related Documents: Operable Wall Specifications - Electric Operable Wall Specifications - Manual Operable Wall Replacement RFP

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Specification - Section 10 22 26 (10650) Operable Partitions Acousti-Seal®

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract including General and

Supplementary Conditions and Division 1 Specification Sections, apply to this

Section.

1.2 SUMMARY

A. This Section includes the following:

1. Electrically operated, continuously hinged partitions.

B. Related Sections include the following:

1. Division 03 Sections for concrete tolerances required.

2. Division 05 Sections for primary structural support, including pre-punching of

support members by structural steel supplier per operable partition supplier's

template.

3. Division 06 Sections for wood framing & supports, and all blocking at head

and jambs as required.

4. Division 09 Sections for wall and ceiling framing at head and jambs.

1.3 QUALITY ASSURANCE

A. Installer Qualifications: An experienced installer who is certified in writing by the

operable partition manufacturer, as qualified to install the manufacturer's partition

systems for work similar in material, design, and extent to that indicated for this

Project.

B. Acoustical Performance: Test operable partitions in an independent acoustical

laboratory in accordance with ASTM E90 test procedure and classified in accordance

with ASTM E413 to attain no less than the STC rating specified. Provide a complete

and unedited written test report by the testing laboratory upon request.

C. Preparation of the opening shall conform to the criteria set forth per ASTM E557

Standard Practice for Architectural Application and Installation of Operable Partitions.

D. The operable wall must be manufactured by a certified ISO-9001-2015 company or

an equivalent quality control system.

E. Indoor Air Quality: Operable partition, movable wall manufacturer’s non-wood

products must meet the SCS Indoor Advantage™ Gold Certification or equivalent.

This approval guarantees conformance to indoor air concentrations meeting Indoor

Advantage Gold Indoor Air Quality Certified to SCS-105 v4.2-2023 Conforms to

ANSI/BIFMA M7.1 and X7.1 and the CDPH/EHLB Standard Method (CA 01350)

v1.2-2017 conducted in an independent third-party air quality testing laboratory.

1.4 REFERENCE STANDARDS

A. ASTM International

1. ASTM E557 Standard Practice for Architectural Application and Installation of

Operable Partitions.

2. ASTM E90 - Standard Test Method for Laboratory Measurement of Airborne

Sound Transmission Loss of Building Partitions and Elements.

3. ASTM C1036 - Standard Specification for Flat Glass.

4. ASTM C1048 - Heat-Treated Flat Glass—Kind HS, Kind FT Coated and

Uncoated Glass.

5. ASTM E84 - Surface Burning Characteristics of Building Materials.

6. ASTM E413 - Classification for Rating Sound Insulation

B. Health Product Declaration Collaborative

1. Health Product Declaration Open Standard v2.1

C. International Standards Organization

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1. ISO 14021 - Environmental Labels and Declarations - Self-Declared

Environmental Claims (Type II Environmental Labeling).

2. ISO 14025:2011-10, Environmental Labels and Declarations - Type III

Environmental Declarations - Principles and Procedures.

3. ISO 14040:2009-11, Environmental Management - Life Cycle Assessment -

Principles and Framework.

4. ISO 14044:2006-10, Environmental Management - Life Cycle Assessment -

Requirements and Guidelines.

5. ISO 21930 – Sustainability in Buildings and Civil Engineering Works — Core

Rules for Environmental Product Declarations of Construction Products and

Services.

D. Other Standards

1. ADA – Americans with Disabilities Act.

2. UL 508A – Standard for Industrial Control Panels

3. NFPA 70 – National Electrical Code

4. ANSI Z97.1 - Safety Glazing Materials Used in Buildings.

5. CPSC 16 CFR 1201 - Safety Standard for Architectural Glazing Materials.

6. NEMA LD3 - High Pressure Decorative Laminates.

1.5 SUBMITTALS

A. Product Data: Material descriptions, construction details, finishes, installation details,

and operating instructions for each type of operable partition, component, and

accessory specified.

B. Shop Drawings: Show location and extent of operable partitions. Include plans,

elevations, sections, details, attachments to other construction, and accessories.

Indicate dimensions, weights, conditions at openings, and at storage areas, and

required installation, storage, and operating clearances. Indicate location and

installation requirements for hardware and track, including floor tolerances required

and direction of travel. Indicate blocking to be provided by others.

C. Setting Drawings: Show imbedded items and cutouts required in other work,

including support beam punching template.

D. Samples: Color samples demonstrating full range of finishes available by architect.

Verification samples will be available in same thickness and material indicated for the

work.

E. Reports: Provide a complete and unedited written sound test report indicating test

specimen matches product as submitted.

F. Create spaces that are healthy for occupants.

1. Furnish products and materials with Health Product Declaration (HPD),

Manufacturer Inventory, or other material health disclosure documentation.

Products without an HPD or other disclosure documentation are not

acceptable.

G. Furnish materials that generate the least amount of pollution.

1. Furnish products and materials that have third party verified environmental

product declarations (EPD’s). Consider products and materials that have

optimized environmental performance (reduced life cycle impacts). Products

without an EPD or other disclosure documentation are not acceptable.

H. Buy American: Folding door to be manufactured in the United States in compliance

with applicable U.S. Federal Trade Commission (FTC) and U.S. Customs Service

and Border Protections regulations and be labeled "Made in America".

1.6 DELIVERY, STORAGE, AND HANDLING

A. Clearly mark packages and panels with numbering systems used on Shop Drawings.

Do not use permanent markings on panels.

B. Protect panels during delivery, storage, and handling to comply with manufacturer’s

direction and as required to prevent damage.

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1.7 WARRANTY

A. Provide written warranty by manufacturer of operable partitions agreeing to repair or

replace any components with manufacturing defects.

B. OP-01: Warranty period: Five (5) years.OP-02: Warranty period: Five (5) years.

PART 2 – PRODUCTS

2.1 MANUFACTURERS, PRODUCTS, AND OPERATION

A. Manufacturers: Subject to compliance with requirements, provide product by the

following:

1. Modernfold, Inc.

B. Doors to be manufactured in the U.S.A.

C. Products: Subject to compliance with the requirements, provide the following product:

1. OP-01: Acousti-Seal Premier – Electric Partition (933E) electrically operated

continuously hinged operable partition.

OP-02: Acousti-Seal Premier – Electric Partition (933E) electrically operated continuously

hinged operable partition.

2.2 OPERATION

A. OP-01: Acousti-Seal Premier – Electric Partition (933E): Series of continuously

hinged flat panels, electrically operated, top supported with operable floor seals.

B. OP-02: Acousti-Seal Premier – Electric Partition (933E): Series of continuously

hinged flat panels, electrically operated, top supported with operable floor seals.

C. Final Closure:

1. OP-01: Side Jamb with overlapping trail panel.

2. OP-02: Side Jamb with overlapping trail panel.

D. Partition shall be operated by:

1. OP-01: Two push button control stations wired in series and located on

opposite sides and opposite ends of the partition. Control stations shall be

activated by key switch at stack end of partition.

2. OP-02: Two push button control stations wired in series and located on

opposite sides and opposite ends of the partition. Control stations shall be

activated by key switch at stack end of partition.

3. Motor unit shall be reversible, continuous duty, and class A insulated. Motor

unit shall have NEMA MG 1 service factor, high starting torque, thermal

overload protection, and open/drip proof enclosure. Motor assembly shall

have wiring compliant with NFPA 70, 24-volt controls, compliant with UL

508A, and speed of 28 feet/minute. The drive unit motor shall be equipped

with outboard limit switches to prevent over-extension. A positive chain drive

attached to the lead panel shall pull the partition across the opening. Cable,

belt, or other friction type drives will not be accepted.

E. Electric motor shall be:

1. OP-01: A 208-volt, 3-phase

2. OP-02: A 208-volt, 3-phase

2.3 PANEL CONSTRUCTION

A. OP-01: Nominal 3-inch (76mm) thick panels in manufacturer's standard 48-inch

(1220mm) widths. All panel horizontal and vertical framing members fabricated from

minimum 18-gage formed steel with overlapped and welded corners for rigidity. Top

channel is reinforced to support suspension system components. Frame is designed

so that full vertical edges of panels are of formed steel and provide concealed

protection of the edges of the panel skin.

B. Panel skin shall be:

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C. OP-02: Nominal 3-inch (76mm) thick panels in manufacturer's standard 48-inch

(1220mm) widths. All panel horizontal and vertical framing members fabricated from

minimum 18-gage formed steel with overlapped and welded corners for rigidity. Top

channel is reinforced to support suspension system components. Frame is designed

so that full vertical edges of panels are of formed steel and provide concealed

protection of the edges of the panel skin.

D. Panel skin shall be:

1. OP-01: 1/2-inch (13 mm) NAUF medium density fiberboard, single material or

composite layers continuously bonded to panel frame. Acoustical ratings of

panels with this construction: Acoustical ratings of panels with this

construction minimum:

a. 50 STC

2. OP-02: 1/2-inch (13 mm) NAUF medium density fiberboard, single material or

composite layers continuously bonded to panel frame. Acoustical ratings of

panels with this construction: Acoustical ratings of panels with this

construction minimum:

a. 50 STC

E. Hinges for Panels, Closure Panels, Pass Doors, and Pocket Doors shall be:

1. OP-01: Full leaf butt hinges, attached directly to the panel frame with welded

hinge anchor plates within panel to further support hinge mounting to frame.

Lifetime warranty on hinges. Hinges mounted into panel edge or vertical

astragal are not acceptable.

2. OP-02: Full leaf butt hinges, attached directly to the panel frame with welded

hinge anchor plates within panel to further support hinge mounting to frame.

Lifetime warranty on hinges. Hinges mounted into panel edge or vertical

astragal are not acceptable.

F. Panel Trim: No vertical trim required or allowed on edges of panels; minimal groove

appearance at panel joints.

G. Panel Weights:

1. OP-01: 50 STC - 8 lbs./square foot

2. OP-02: 50 STC - 8 lbs./square foot

2.4 PANEL FINISH

A. Panel finish shall be:

1. OP-01: Reinforced vinyl with woven backing weighing not less than 20

ounces (567 grams) per lineal yard.

2. OP-02: Reinforced vinyl with woven backing weighing not less than 20

ounces (567 grams) per lineal yard.

B. Panel Trim: Exposed panel trim of one consistent color:

1. OP-01: To Be Advised

OP-02: To Be Advised

2.5 SOUND SEALS

A. Vertical Interlocking Sound Seals between panels: Roll-formed steel astragals, with

reversible tongue and groove configuration in each panel edge for universal panel

operation. Rigid plastic or aluminum astragals or astragals in only one panel edge

are not acceptable.

B. Horizontal Top Seals: Continuous contact extruded vinyl bulb shape with pairs of

non-contacting vinyl fingers to prevent distortion without the need for mechanically

operated parts.

C. Horizontal bottom floor seals shall be:

1. OP-01: A2 - Automatic operable seals providing nominal 2-inch (51 mm)

operating clearance with an operating range of +1/2-inch (13 mm) to –1-1/2

inch (38 mm) which automatically drop as panels are positioned, without the

need for tools or cranks.

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2. OP-02: A2 - Automatic operable seals providing nominal 2-inch (51 mm)

operating clearance with an operating range of +1/2-inch (13 mm) to –1-1/2

inch (38 mm) which automatically drop as panels are positioned, without the

need for tools or cranks.

2.6 SUSPENSION SYSTEM

A. OP-01: #14 Suspension System

1. Suspension Tracks: Minimum 7-gage, 0.18-inch (5 mm) roll-formed steel.

Track shall be supported by adjustable steel hanger brackets connected to

structural support by pairs of 1/2-inch (13 mm) diameter threaded rods.

Brackets must support the load bearing surface of the track.

a. Exposed track soffit: Steel, removable for service and maintenance,

attached to track bracket without exposed fasteners, and pre-painted

off-white.

2. Carriers: All-steel trolleys with steel-tired ball bearing wheels.

3. Warranty period: Ten (10) years.

B. OP-02: #14 Suspension System

1. Suspension Tracks: Minimum 7-gage, 0.18-inch (5 mm) roll-formed steel.

Track shall be supported by adjustable steel hanger brackets connected to

structural support by pairs of 1/2-inch (13 mm) diameter threaded rods.

Brackets must support the load bearing surface of the track.

a. Exposed track soffit: Steel, removable for service and maintenance,

attached to track bracket without exposed fasteners, and pre-painted

off-white.

2. Carriers: All-steel trolleys with steel-tired ball bearing wheels.

3. Warranty period: Ten (10) years.

2.7 OPTIONS

A. Pass Doors:

B. Single Pass Doors:

1. OP-01: Matching pass door same thickness and appearance as the panels.

ADA compliant pass door equipped with friction latch and flush pulls for panic

operation. No threshold will be permitted.

C. Pass Doors:

1. OP-02: Matching pass door same thickness and appearance as the panels.

ADA compliant pass door equipped with friction latch and flush pulls for panic

operation. No threshold will be permitted.

D. Available accessories/options:

1. OP-01: Pocket Doors: Acousti-Seal Pocket Doors by Modernfold, Inc.

Equipped with electric interlock system. (see supplement specification)

a. Premier pocket door

2. OP-02: Pocket Doors: Acousti-Seal Pocket Doors by Modernfold, Inc.

Equipped with electric interlock system. (see supplement specification)

a. Premier pocket door

PART 3 – EXECUTION

3.1 INSTALLATION

A. General: Comply with ASTM E557, operable partition manufacturer's written

installation instructions, Drawings and approved Shop Drawings.

B. Install operable partitions and accessories after other finishing operations, including

painting have been completed.

C. Match operable partitions by installing panels from marked packages in numbered

sequence indicated on Shop Drawings.

D. Broken, cracked, chipped, deformed or unmatched panels are not acceptable.

Commodity Codes

• NAICS 236220Commercial and Institutional Building Construction
• NAICS 238350Finish Carpentry Contractors
• NAICS 238390Other Building Finishing Contractors
• NAICS 238990All Other Specialty Trade Contractors

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