National Ramp provides wheelchair and access ramps designed to enhance mobility and independence. The Liberty Series utilizes a modular aluminum design for relatively rapid installation, typically completed within one to two days. Proper installation is critical for safety and warranty validity, and installers are expected to verify dimensions based on field conditions. This article details the installation process and components of the Liberty Series ramp system, based on available documentation.
Ramp System Components
The Liberty Series ramp system comprises several key components, as outlined in the provided documentation. These include:
- Ramp Sections
- 5'x5' Turn Platforms
- T-Posts
- Bottom Transition Plates (BTP)
- Landing Pads
- Legs
- End Loops
- Filler Pipe
- Elbows
- Celebration Footer Pads™
- Leg Caps
- End Caps
- Corner Covers
- Universal Brackets
The system is constructed from 100% aluminum and features a slip-resistant surface. Connections between components utilize a tongue and groove system.
Installation Preparation
Before commencing installation, several preparatory steps are necessary. These include:
- Confirming all components are on-site and undamaged.
- Completing any required site preparation.
- Positioning all handrails next to platforms and ramp sections.
- Organizing all hardware bags with their corresponding sections or platforms.
Required tools for installation include:
- Tape Measure
- 3/16" and 5/32" Allen Keys
- Pipe Cutter (for 1 1/2" tubing)
- Sanding/Filing Tool or Deburring Tool
- Sawhorses or a portable workbench
- String
- Level
Installation Steps
The installation process involves multiple stages, with a strong emphasis on verifying dimensions based on actual field conditions.
Step 1: Platform and Ramp Section Placement
Initial placement involves positioning ramp sections and platforms according to the desired configuration. The documentation highlights two primary layout configurations: 90° turns and switchback ramps. Platforms that create 90° or 180° turns also function as rest platforms.
Step 2: Leg Installation
Three legs are installed at the corners of each pie platform. It is crucial to verify foot placement dimensions based on field conditions and the actual installation. All legs must be fully supported and firmly on the ground across their length. After confirming all legs are plumb, all leg bolts should be tightened.
Step 3: Handrail Installation
Handrails are installed alongside platforms and ramp sections. The documentation details procedures for cutting handrails using a pipe cutter, ensuring the removal of any burrs. Elbows are inserted between platform and section handrails and tightened with an Allen key. For 90° turns, diagonal railing using elbows is an option. When connecting handrails, alignment is essential to prevent sharp edges. A clearance of 1.5" between railings is required for code compliance.
Step 4: Transition Plate Installation
The Bottom Transition Plate (BTP) is centered on top of the starting ramp section or platform, and secured with driller screws.
Step 5: Bracket Installation
All ramp and platform brackets must be installed to ensure the safety and security of the ramp system. The documentation provides a chart to determine bracket positioning and drill hole locations based on specific configurations.
Step 6: Final Adjustments and Verification
After completing the core installation, the following steps are necessary:
- Using a level, ensure each ramp section is level across the ramp and at the correct slope.
- Trim filler pipe as needed.
- Stretch a string from the top of one ramp section to the bottom of the next, ensuring the sections follow the string.
- Verify foot placement dimensions again, based on field conditions.
Incline Determination and ADA Guidelines
Determining the correct incline is crucial for safety and compliance with the Americans with Disabilities Act (ADA) guidelines. The documentation provides an incline chart as a resource, but explicitly states that National Ramp assumes no responsibility for determining a safe ramp incline for any specific installation.
Factors to consider include:
- Starting height, including door thresholds.
- Height from the door threshold to the ending point.
- Screen door versus inset door configurations. For screen doors, the ramp must not impede door operation. For inset doors, a smooth transition between the ramp and door is required.
Weight Capacity and Bariatric Ramps
The Liberty Series ramps are available in two widths: 36" and 48". The 36" wide standard ramping has a weight capacity of 1,000 lbs. The 48" wide bariatric ramping has a weight capacity of 1,200 lbs.
Warranty and Maintenance
National Ramp’s warranty is contingent upon proper installation. If the installer does not adhere to the installation guidelines, the warranty is considered void. The documentation also provides guidance on Liberty Series ramp maintenance and care, though specific details are not provided in the available source material.
Conclusion
The National Ramp Liberty Series offers a modular aluminum ramp solution for enhancing accessibility. Successful installation relies on careful preparation, adherence to the provided guidelines, and thorough verification of dimensions based on site-specific conditions. Proper installation is not only essential for safety but also for maintaining the validity of the product warranty. The system’s components and installation steps, as detailed in the Liberty Series Installation Guide, aim to provide a secure and reliable access solution.