TIP – The uppermost end of the ladder (opposite the butt). TORMENTOR POLES – The poles attached to the upper bed section of a 40′ or larger extension ladder. They are used to assist in raising, lowering, pivoting, and stabilizing of the ladder. Ladders are designed with solid or trussed beams.
What is the upper surface of the starfish called? what is the lower surface of the starfish called.

What are the parts of an extension ladder called?

  • Rails.
  • Rungs.
  • Base Section.
  • Fly Section.
  • Rung Locks.
  • Rope and Pulley.
  • Stop.
What is the top section of an extension ladder called?

The telescopic sections of an Extension Ladder, also known as Fly Sections, are held into their adjusted position by extension locking devices known as Rung Locks.

What are the parts of a ladder?

  • STEPS. We’re starting with the steps because they are the most common, and obvious piece of the puzzle when building a ladder. …
  • RAILS. The rails are the vertical pieces in which the steps are attached. …
  • SHELF. …
  • EXTENSION LOCKS. …
  • RUNGS. …
  • FLY SECTION. …
  • ROPE AND PULLEY. …
  • ANTI-SLIP SHOES.
What is the lower section of an extension ladder called?

Bottom section of an extension ladder. Heel; Lowest end of the ladder.

What is the 4 to 1 rule for ladders?

The base of the ladder should be placed so that it is one foot away from the building for every four feet of hight to where the ladder rests against the building. This is known as the 4 to 1 rule.

What is the minimum distance an extension ladder must extend beyond the surface to be accessed?

An extension or straight ladder used to access an elevated surface must extend at least 3 feet above the point of support (see diagram). A ladder extended to a height of 48-ft or longer requires a 6-ft extension beyond the eave.

Are extension ladders safe?

Because extension ladders are not self-supporting they require a stable structure that can withstand the intended load. PLAN Ahead to Get the Job Done Safely.

What are the steps called on a ladder?

A ladder is a piece of equipment that has a series of steps (also called rungs) between two upright lengths of wood or metal.

What is the end of a ladder called?

TIP – The uppermost end of the ladder (opposite the butt). TORMENTOR POLES – The poles attached to the upper bed section of a 40′ or larger extension ladder. They are used to assist in raising, lowering, pivoting, and stabilizing of the ladder. Ladders are designed with solid or trussed beams.

What are the 4 common ladder types?

  • Stepladders. A stepladder is one of the most common ladder types with nearly universal application. …
  • Straight Ladders. Also known as single ladders, straight ladders look like one half of a stepladder. …
  • Platform Ladders. …
  • Extension Ladders. …
  • Trestle Ladders. …
  • Multi-Way Ladders.
What should completely encircle the ladder?

  1. Wells must completely encircle the ladder.
  2. Inside widths of wells must be at least 30 inches (76 cm).
  3. Inside faces of wells on the climbing side of the ladder must extend between 27 inches (68 cm) and 30 inches (76 cm) from the centerline of the step or rung.
What is the proper angle for the set up of a portable extension ladder?

Place the ladder feet so that the horizontal distance between the feet and the top support is 1/4 of the working length of the ladder. The ladder will be leaning at a 75 degree angle from the ground.

What is a rung on a ladder?

: a piece of wood or metal that is placed between the legs of a chair for support. : one of the pieces of wood or metal that is used as a step on a ladder. : a position or level within a group, organization, etc., that is higher or lower than others.