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Cartesian Bridge Fall Protection Systems

Multiple positioning requirements and lower working heights typically require a rigid rail overhead trolley, or cartesian bridge fall protection system. Manually and motor driven cartesian, or two way coordinate systems offer the flexibility to provide fall protection for 100% of the planned coverage area. Cartesian Fall Arrest Systems may be attached to overhead structure for indoor applications such as aircraft hangars or designed and fabricated as freestanding units for outdoor tanker truck applications. Versatile and easy to use, this form of rigid beam fall protection minimizes fall distance, reduces deflection rates, and is ideally suited for multiple user applications.

Each our systems is the product of an on-site engineering visit where our safety experts watch the interaction of your equipment and personnel to create a custom solution. Our turnkey approach means you can rely on one company to engineer, fabricate, install, and re-certify a custom fall protection solution that provides years of safe and reliable service.  As a sole source provider, we also assume all liability for the system.

Remember, falls are the leading cause of occupational injuries and fatalities each year, and the increased insurance and workman’s compensation premiums combined with the legal fees associated with a fall can have dire consequences.  Ensure OSHA compliance and worker safety with a Cartesian style fall protection system  from the safety experts at Diversified.

We are a complete turnkey provider of OSHA compliant rigid rail fall protection systems and have years of experience designing and installing cartesian  bridge systems. Contact us for expert assistance with your fall arrest, fall restraint and fall protection requirements.

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Design Considerations

Cartesian Fall Protection Design Considerations As is the case with most fall protection systems, one of the fundamental design considerations for Cartesian Fall Protection systems is size of the planned coverage area. The system design most not only cover the entire work area, but it must also accommodate the total number of planned users. it is also important to determine if the system must allow for user pass-by capability. Once coverage area and user capacity/requirements have been established, multiple bridges may be recommended to provide maximum fall protection for the work area. Finally, because these systems are suspended overhead, a thorough inspection and assessment of the roof support structure must be undertaken to ensure the building has the structural integrity to support a cartesian fall protection system. DFP application engineers will perform a site assessment to determine if your roof support system is strong enough to support a cartesian fall protection system.

OSHA Regulations

  • Personal Fall Arrest Systems:  System performance criteria. In addition to the general requirements in paragraph (c) of this section, the employer must ensure that personal fall arrest systems: 1910.140(d)(1)(i)
  • Limit the maximum arresting force on the employee to 1,800 pounds (8 kN); 1910.140(d)(1)(ii)
  • Bring the employee to a complete stop and limit the maximum deceleration distance the employee travels to 3.5 feet (1.1 m); 1910.140(d)(1)(iii)
  • Have sufficient strength to withstand twice the potential impact energy of the employee free falling a distance of 6 feet (1.8 m), or the free fall distance permitted by the system; and... 1910.140(d)(1)(iv)
  • Sustain the employee within the system/strap configuration without making contact with the employee's neck and chin area. 1910.140(d)(1)(v)

  If the personal fall arrest system meets the criteria and protocols in appendix D of this subpart, and is being used by an employee having a combined body and tool weight of less than 310 pounds (140 kg), the system is considered to be in compliance with the provisions of paragraphs (d)(1)(i) through (iii) of this section. If the system is used by an employee having a combined body and tool weight of 310 pounds (140kg) or more and the employer has appropriately modified the criteria and protocols in appendix D, then the system will be deemed to be in compliance with the requirements of paragraphs (d)(1)(i) through (iii). 1910.140(d)(2)   The employer must ensure that:

  • On any horizontal lifeline that may become a vertical lifeline, the device used to connect to the horizontal lifeline is capable of locking in both directions on the lifeline. 1910.140(d)(2)(ii)
  • Personal fall arrest systems are rigged in such a manner that the employee cannot free fall more than 6 feet (1.8 m) or contact a lower level. A free fall may be more than 6 feet (1.8 m) provided the employer can demonstrate the manufacturer designed the system to allow a free fall of more than 6 feet and tested the system to ensure a maximum arresting force of 1,800 pounds (8 kN) is not exceeded. 1910.140(d)(3)
  • Body belts. Body belts are prohibited as part of a personal fall arrest system.

Talk to a fall protection specialist

Tell us about your fall protection needs, and we’ll configure a system that rises to your challenges.