Design Under Door Tool

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Research building codes for door levers (height, etc.) Research ADA requirements for door levers Research materials on McMaster Carr for an under the door tool

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Researched pre-made under the door tools. Discovered they were made of spring steel. McMaster Carr has spring steel, but it is very difficult to form and temper, especially as I'll be working with 4'+ of it.

McMaster Carr doesn't really have much in the way of 5' of straightened spring steel.

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ADA door requirements summarized:

Must be usable with one hand (operability with a closed fist is preferred). Source

Maximum of 48" above the ground for doorknobs. Source

More information on doors: Source

• At least one door must be ADA accessible on the building
• Door lever is 34" - 48" off the ground Source
• Smooth surface on the bottom of the push side of the door (life hack to tell if it's a push or a pull door?)

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Discovered the IBC from an Assa Abloy publication

The IBC is in use or adopted in most states and applies to almost all buildings.

IBC 1008.1.9.11 Stairwell doors must be unlocked from both sides unless:

• They are exit doors to the outside world
• They can be unlocked by a signal from the fire command center

IBC 1008.1.9.4 Deadbolts and manually operated locks are not allowed UNLESS:

• They are privacy locks for your room
• They are for storage rooms with double doors (Lock is on the inactive door)

IBC 1010.1.2.1 Doors must swing towards the direction of egress UNLESS:

• They have an occupant load of less than 50 people

IBC 1010.2.6 Closet doors that latch closed should be openable from the inside

• Does this apply to server closets?

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Various DIY UDTs to keep in mind: Hoop style Wire style

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After review of several types of UDT, I am considering ordering one of the sparrows ones, as it is the only one with spring steel, which is difficult to obtain and form at home. Most steel types easily available are mild steel or prohibitively expensive

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Visited Home Depot and purchased a 3/16" mild steel rod. Will be prototyping hinges to allow it to be used as a UDT without permanent bending of the metal.

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Instead of a hinge, created a side-by-side clamp and started a print of it.

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Not a huge fan of the side-by-side clamp, trying again for a hinge.

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After playing with the side-by-side clamp, I don't think a hinge will have the structural integrity necessary (<5 lbs ) to open the doorknob.

Currently watching this playlist to understand the usage more https://www.youtube.com/playlist?list=PLwxkGxLTPJTlxkqsmsrWOnHAudf4rLv9A

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Looking at buying a 72" 3/16" steel rod

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Purchased 72" steel rod.

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Purchased a 48" retractable keyring.