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Supported Column Lifelines

L & T Style Support Column Lifelines

“L” and “T” Column Style Lifelines are particularly well suited for fall arrest in applications where height restrictions preclude the use of HLL installations at foot level.  By placing the fall protection system overhead, a fall can be arrested before a worker strikes equipment or the ground below.  “L” and “T” Column Style HLL’s are often found in rail car, mass transit, and truck applications, just to name a few.

T-Style Lifeline System
Walking safely across a rail car with the aid of a lifeline and a T-style support column lifeline system
"L" and "T" Column Style Lifelines
"L" and "T" Column Style Lifelines
"L" and "T" Column Style Lifelines
T-Style Lifeline System
Walking safely across a rail car with the aid of a lifeline and a T-style support column lifeline system
"L" and "T" Column Style Lifelines
"L" and "T" Column Style Lifelines
"L" and "T" Column Style Lifelines

If you are new to this form of horizontal lifeline, you may assume that the structural steel columns, horizontal beams, and the stainless steel cable and shuttle are the most important parts of these systems.  Although each of these components plays an important role in keeping workers safe, the portion that is only slightly visible–the concrete foundation–is key to ensuring safe and reliable system operation.  This is why working with a fall protection with in-house engineering capabilities (including PE)–is critical.  Our turnkey approach to fall protection means that we assume sole responsibility (and liability) for each phase of your project:  design, fabrication, installation, training, inspection, and re-certification.

Remember, falls are the leading cause of occupational injuries and fatalities each year, and the financial impact of an accident is enormous for both your employee and your company.  Ensure worker safety and OSHA compliance with an engineered gallows style horizontal lifeline from Diversified Fall Protection.

We are a complete turnkey provider of OSHA compliant Horizontal Lifelines have years of design and installation experience.  Contact us for expert assistance with your fall arrest, fall restraint and fall protection requirements.

Design Considerations

"L" and "T" Column Style Lifeline Design Considerations "L" and "T" Column Style Horizontal Lifeline Systems are common for outdoor applications where rigid beam systems are not practical.  One of the advantages to a gallow style HLL is design flexibility.  A series of gallows posts can be configured to run in a straight line, or accommodate curves and bends, which is a common practice for railroad yard applications.  Rail yards with multiple sections of track or busy freight terminals with multiple loading areas are ideal applications for T-Style gallows, which effectively double the coverage area of the fall protection system. In applications where a gallows style horizontal lifeline system is under consideration, the depth of the water table, as well as the condition and compaction of the soil must be assessed to ensure an adequate foundation to support the weight of the system.  The distance spanned by a gallows style horizontal lifeline is limited only by the ability to erect anchor points of anchor points; HLL systems can safely span distances in excess of 600 feet. Special care must also be taken to account for load and deflection rates which are determined by a number of factors, including pre-tension of the cable, length of the area spanned, and the number of workers connected to the system.

OSHA Regulations

  • Horizontal Lifelines
    • 1926.502(d)(8) Horizontal lifelines shall be designed, installed, and used, under the supervision of a qualified person, as part of a complete personal fall arrest system, which maintains a safety factor of at least two.
  • Personal Fall Arrest Systems
    • 1926.502(d)(16) Personal fall arrest systems, when stopping a fall, shall:
    • 1926.502(d)(16)(ii) limit maximum arresting force on an employee to 1,800 pounds (8 kN) when used with a body harness;
    • 1926.502(d)(16)(iii) be rigged such that an employee can neither free fall more than 6 feet (1.8 m), nor contact any lower level;
    • 1926.502(d)(16)(iv) bring an employee to a complete stop and limit maximum deceleration distance an employee travels to 3.5 feet (1.07 m); and,
    • 1926.502(d)(16)(v) have sufficient strength to withstand twice the potential impact energy of an employee free falling a distance of 6 feet (1.8 m), or the free fall distance permitted by the system, whichever is less.

Related Documents

Did You Know?

It is the responsibility of the employer to provide prompt rescue of their workers in the event of a fall or assure that their workers are able to self rescue?