Module 26107-20 Hand Bending Vocabulary Flashcards

Flashcards defining trade terms, equipment specs, geometric concepts, and NEC guidelines from the Hand Bending module.

90° Bend

A bend that changes the direction of the conduit by $90^\frac{1}{2}\text{ degrees}$ or $90^\text{o}$ ($90^\frac{1}{2}$ angle).

Back-to-Back Bend

Any bend formed by two $90^\text{o}$ bends with a straight section of conduit between the bends.

Concentric Bends

$90^\text{o}$ bends made in two or more parallel runs of conduit with the radius of each bend increasing from the inside of the run toward the outside.

Developed Length

The actual length of the conduit that will be bent, calculated using the formula $\text{Developed length} = (A + B) - \text{gain}$.

Gain

The distance saved by the arc of a $90^\text{o}$ bend because a conduit bends in a radius and not at right angles.

Offset

Two bends placed in a piece of conduit to change elevation to go over or under obstructions or for proper entry into boxes, cabinets, etc.

Rise

The length of the bent section of conduit measured from the bottom, centerline, or top of the straight section to the end of the conduit being bent.

Segment Bend

A large bend formed by multiple short bends or shots.

Stub-Up

Another name for the rise in a section of conduit at $90^\text{o}$, or a term used for conduit penetrating a slab or the ground.

Hand Bender Capacity

Portable bending tools used on smaller conduit from trade sizes $$rac{1}{2}