Exhibit A 136-25 Specification FINAL.pdf

Exhibit A – 136-25 Bid Specification

Portable Fall Protection Platforms

1. Introduction

The MBTA operates sixteen (16) bus garages and rail carhouses that provide maintenance and repair services for bus, subway, and light rail vehicles. The requirement is for portable, modular fall protection platforms that will allow workers to safely access and service rooftop-mounted equipment on these vehicles.

The MBTA’s objective is to establish a standardized Fall Protection Platform system that can be deployed, as needed, across multiple maintenance locations over the next ten (10) years.

The MBTA may consider larger or one-time bulk purchases under this Agreement in the future. The MBTA reserves the right to solicit separate pricing for such orders but may first invite the awarded Contractor to provide a quotation or volume discount proposal.

At this time, the MBTA will be purchasing a system for the Cabot Rail Facility.

As much as possible, the selected system should be modular and portable, enabling reconfiguration and relocation between facilities. It will provide platforms and stairway access that allow safe, efficient, and OSHA-compliant access to bus and rail vehicles for inspection, maintenance, and repair of rooftop-mounted equipment. Platforms shall be designed to interface with MBTA vehicles without causing contact damage to vehicle structures or components.

2. General Requirements

2.1 Modular, Replaceable Design

• The platform system shall be modular in design.

• Major components (including but not limited to guardrails, toe boards, casters, stair assemblies, extensions, and deck sections) shall be individually replaceable.2.2 Dimensions

• Maximum working height: 12 ft 4 in; actual maximum may be less depending on application (bus vs. rail car).

• The height to base ratio shall not exceed two to one per OSHA 1926.452(w)(6)(ii)

• Standard lengths: Bus platforms: 40 ft per unit. Rail platforms (heavy rail and light rail): 60 ft per unit.

• Platform floor width: ≥ 4 ft.

2.3 Fall Protection

• All open sides shall be protected by OSHA-compliant guardrail systems, including:

• Top rail height: minimum 42 in ± 3 in above the walking surface.

• Mid-rails: positioned midway between the top rail and platform surface (approx. 21 in).

• Toe boards: minimum 4 in height on all edges where persons or tools could fall.

• Guardrails shall withstand at least 200 lb applied force in any outward or downward direction, in accordance with OSHA 29 CFR 1926.451 and 1926.502.

• Access points shall be equipped with inward-opening, self-closing, automatically latching safety gates to maintain continuous fall protection and prevent gates from being left ajar.

2.4 Load Capacity and Stability

• Platforms shall safely support:

o A maximum intended load of not less than 75 pounds per square foot o ≥ 1,000 pound load uniformly distributed across the deck.

o Shall be capable of supporting 4 times the intended load stated above per OSHA 1926.451(a)(1)

• Structure shall maintain stability under combined crew, tools, and equipment weight. Stability tested as described in ANSI A92 series documents.

2.5 Platform Surface

• Walking surfaces shall be slip-resistant in accordance with ASTM D2047 or equivalent standard.

• The platform structure shall accommodate minor unevenness in shop flooring while maintaining a continuous, flush, and stable work surface free of gaps or trip hazards.

2.6 Sliding Extensions

• Platforms shall include sliding extensions on the vehicle-facing side to ensure the work surface can be brought into close alignment with the vehicle roofline without repositioning the entire structure.

• Extensions shall consist of board-shaped members that slide out from beneath the deck when deployed and retract fully underneath for storage and transport.

• Each extension shall provide at least 12 in of adjustable reach.

• Extensions shall lock positively in place during use and maintain the same load capacity and slip-resistant surface as the main deck.

• The outer edges of extensions shall incorporate protective materials or features (e.g., non-marring pads, bumpers, or guards) to prevent damage to vehicle exteriors when in contact.

2.7 Access Stairway

Stair assemblies shall be provided as separate components and shall be designed for attachment at either the ends or the sides of each platform, depending on the application:

• Bus platforms (40 ft): typically one stair assembly per unit.

• Rail platforms (60 ft): typically two stair assemblies per unit.

Stair assemblies shall:

• Attach securely to the platform with a quick-latch or equivalent securement.

• Be capable of being attached to either end or to the side of the platform, allowing flexible access in various maintenance facility layouts.

• Automatically accommodate platform height adjustment.

• Be detachable for transport in MBTA service trucks between maintenance facilities.

2.8 Mobility

• Platforms shall be equipped with heavy-duty rolling casters with a suitable diameter to ensure smooth movement across uneven shop floors.

• Casters shall include positive locking mechanisms to prevent unintended movement during use.

• Caster wheels shall be constructed of non-marking, industrial-grade materials designed to withstand exposure to oils, greases, solvents, cleaning agents, and other fluids commonly encountered in bus and rail maintenance facilities.

2.9 Modularity and Transportability

• Platforms shall consist of interconnectable sections.

• Dismantled components shall have a maximum size of 20’x8’ to fit within standard MBTA service trucks for transport between facilities.

2.10 Assembly / Disassembly

• Platforms shall be assembled/disassembled by two workers using only basic hand tools.

• No special lifting equipment shall be required beyond a forklift.

2.11 Materials & Finish

• Stainless steel or galvanized steel shall not be accepted.

• Aluminum or other light weight construction that provides adequate structural strength is preferred.

• Scaffold components made of dissimilar metals shall not be used together per OSHA 1926.451(b)(1)

2.12 Vehicle Access• Platforms shall be designed so as not to obstruct necessary access to rail car or bus doors, ensuring that employees can continue to enter and exit vehicles while roof work is being performed.

2.13 Height Adjustment

• Platforms shall be equipped with a height-adjustment mechanism that allows MBTA personnel to safely and easily raise or lower the platform

• The adjustment range shall be at least 24 inches to accommodate variations in vehicle and shop floor conditions.

• Platforms shall be equipped with visible height indicators for precise adjustment.

• A positive locking mechanism shall be provided to secure the platform at the selected height and prevent unintended movement.

3. Deliverables

• Complete platform system delivered to a designated MBTA facility.

• On-site demonstration of safe assembly, disassembly, and use.

• Initial full assembly on site

• Worker training session, covering safe operation, inspection, and fall-protection procedures.

• Printed and digital operation & maintenance manual, including inspection checklists and replacement part references.

4. Warranty and Documentation Requirements

• Minimum 1-year warranty covering materials and workmanship and a service response time commitment for warranty and post-warranty support.

• Complete technical documentation, engineering drawings, and fabrication details for all system components.

5. Initial procurement requirement for Cabot Yard (heavy rail):

Quantity Two (2) 60ft-long modular safety aluminum scaffolding with:

• 4 ft wide deck platforms

• Four (4) detachable stair assemblies

• Non-skid surfaces on platforms and stairs

• OSHA compliant guardrails and self-closing, automatically latching safety gates

• Mounted on heavy-duty locking casters

• Maximum working height 12’4”, with a 24” adjustable range

• Extendable end gates capable of spanning up to 10 ft 4 in across the vehicle roofline to provide full-width coverage.

• Locking 12” sliding extensions with non-marring protective bumpers on the vehicle-facing sides of the platforms

6. Questions

1. What materials are used in the construction of your safety platforms?

2. What tools are required for assembly and routine maintenance?

3. Are any of these tools proprietary, and if yes, are they available to customers?

4. What are the dimensions and weights of the largest sub-component or module section of the platforms?

5. Are vehicle-contact protection materials field-replaceable? Please provide details of this process.

6. Describe the mechanism for locking casters to prevent unintended movement during platform use.

7. Which system components are standard or non-proprietary, and which are custom or proprietary?

8. How does your system prevent sway and ensure stability under load?