What dogging method is used to ensure slings do not slide to the centre of a two-sling lift?

What dogging method is used to ensure slings do not slide to the centre of a two-sling lift?

• A. Double wrap when applying choke
• B. Single wrap when applying choke
• C. No wrap required
• D. Cross-wrap method

Answer: (A)

When you’re dogging a two-sling lift, the choke needs extra bite to stay put as the load is raised. Applying a double wrap around the choke increases the contact length and the friction between the sling and itself. That extra friction resists movement, so the choking point remains fixed and the slings don’t creep toward the center of the lift. A single wrap doesn’t provide as much friction, so the choke can loosen or slide under load. Not wrapping at all gives almost no resistance to movement, and a cross-wrap serves a different purpose and won’t reliably prevent center migration in this setup. So the double wrap is the best way to keep the slings centered and the lift stable.

When you’re dogging a two-sling lift, the choke needs extra bite to stay put as the load is raised. Applying a double wrap around the choke increases the contact length and the friction between the sling and itself. That extra friction resists movement, so the choking point remains fixed and the slings don’t creep toward the center of the lift. A single wrap doesn’t provide as much friction, so the choke can loosen or slide under load. Not wrapping at all gives almost no resistance to movement, and a cross-wrap serves a different purpose and won’t reliably prevent center migration in this setup. So the double wrap is the best way to keep the slings centered and the lift stable.