How to bend emt pdf

This is to allow for spring back. Check out this very informative video on how to bend a 90 degree with EMT. Conduit comes in 10 foot lengths and can create an awkward bending situation when the stub length is over 60 inches.

The reverse method for bending a 90 is an alternative that addresses this type of situation. This method is also used in back to back 90 degree bends. When using the reverse method the take up deduction is no longer needed. This bend forms a short leg as if it were the stub and leaves the long stub on the ground as if it were the leg.

A back to back bend is making a U with the conduit. To do it right, you could use both the basic and reverse method depending on the lengths of the stub you need. The video below shows you the proper way to make a back to back He uses 30 inches between bends which allows for plenty of clearance for the handle and bender show.

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Article Summary. Part 1. Start from a corner or other orienting point, then measure from the corner to where the conduit will end usually a converter box. Place a pencil mark on the conduit at the measurement where the corner should be. Calculate the amount of extra conduit you will need.

When you bend conduit, you lose length as the conduit is bent in the direction of another plane. Cut the conduit to the size you need, removing burrs from the end.

Use a conduit reamer or knife to scrape the edges to get rid of any fragments, or burrs. Ensure that all burrs are removed before you install the conduit. Otherwise, this may cause a short or ground fault after the wire has been installed. Part 2. Work with a bender. A bender is an essential for any conduit bending project.

The tool should fit the correct sized conduit tube that you need to use. If there are no instructions on the bender, follow the standards as listed above for the size conduit you are using. This is the point at which a bent conduit has reached a right angle. It is one of the most commonly used angle marks. Other angle marks. Stub height mark. This mark will usually list a number like 6 inches 15 cm to use for the bender take-up.

Slide the conduit into the bender. Be sure to leave the appropriate amount past the arrow on the bending shoe. Set the conduit on a level, firm ground and place your foot firmly on top of the foot of the bender.

The top of the pipe should come through the bender, so your foot should be able to steady it as well. Pull the bender handle toward you to create the bend. Use a firm and steady motion to avoid kinks or crimps in the conduit. Make sure your foot and hand remain securely on the bender; any small slip in the conduit can cause an off-centered bend, and you will need to start over with a new piece of conduit.

Make sure that you apply firm pressure with your foot to avoid creating kinks in the bend. Be aware that when you bend, you may need to overbend slightly to compensate for any spring back in the conduit. Do this slowly and carefully. Go slow and take your time.

Check to make sure your bend is the right angle. You can do this either holding it up to the wall or using a level held snugly against the front side of the pipe.

You can also hold it to a surface you know is level to check it. Part 3. Learn how to air bend in a pinch. Most of the time, you'll use your bender and the floor to bend the conduit. But sometimes, especially if you're doing a more complicated bend, like a back to back bend or an offset bend, you won't be able to use the floor as a fulcrum. If you need to use an airbend to twist your conduit, here's how: Put the hilt of the bender on the ground. Secure it in place with both feet or another reliable anchor.

Keep the bender straight and let your body apply the pressure to the conduit. Don't try to use the bender to airbend. Make sure the head of the bender stays rigid as the conduit bends into the cradle. Use the correct-sized bender for the type of conduit you're using.

While it's tempting to think that your bender is a one-size-fits all tool, it's not. Be prepared to use or buy a bender for each different type of conduit you need to bend. Use a level and protractor to double-check the measurements. Don't be afraid to use a water level and protractor to measure your angles with certainty.

Take your time to make sure the bends are aligned.