What does FSWR mean?
By Gabriel Cooper
What does FSWR mean?
Flexible steel wire rope (FSWR)
What is a Reeve factor?
English term or phrase: REEVE FACTOR. To calculate the maximum weight of load that can be lifted, multiply the SWL of the sling(s) by the angle factor, then by the reeve factor.
What are some causes of wire rope failure?
When we look at wire rope wear and failure, there are numerous possible causes. Possible causes include:
- Abrasion Caused Failure.
- Core Protrusion.
- Corrosion Caused Failure.
- Cut or Shear Caused Failure.
- Fatigue Caused Failure.
- Tension Caused Failure (Overloading of Rope)
What can a dogman do?
A licensed Dogman can:
- Select and inspect lifting gear.
- Sling loads per trained techniques.
- Direct a crane or hoist operator in the movement of loads.
What is the difference between SWL and WWL?
WLL and SWL are abbreviatons for Working Load Limit (WLL) and Safe Working Load (SWL). The main difference between the two terms is that SWL is the older term. Today, SWL isn’t used anymore because the term is completely replaced with WLL and MRC. MRC stands for Maximum Rated Capacity.
What can damage wires?
What are the main causes of electrical cable failure?
- Application: If cable selected is not appropriate for the application it is more likely to fail in service.
- Mechanical failure:
- Degradation of the cable sheath:
- Moisture in the insulation:
- Heating of cable:
- Electrical Overloading:
- Rodent attack:
- UV exposure:
What can break a rope?
ABRASION
- Frozen sheaves or rollers.
- Tight grooves.
- Excessive fleet angle.
- Oversized or undersized rope.
- Corrugated sheave or drum.
- Sheave overspin.
- Rope jumping the sheave.
- Poor spooling.
What’s the difference between a dogman and rigger?
The dogman is responsible for anything below the crane hook, and the rigger is responsible for anything above the crane hook as well as below the hook.
What does a dogman rigger do?
A Dogman or “dogger” is a specialist in correctly slinging and directing loads handled by cranes. Often, the crane operator will work with a team of dogmen, for example: one on the ground to attach the load and another on top of the building to remove it.
