Anchor Tie Off for Training

[Brandon Clark]

Hello everyone,

Has anybody ever been asked by a client to provide a tie off point on the top of a steel roof that has the capacity to withstand a 10,000 lbs ultimate load in any direction as prescribed in the NFPA? If so, do you mind sharing what kind of system you used?

I was thinking of welding a steel pipe to the top of a roof beam with a steel plate that has a hole in it for them to tie off too. The challenge is that it would induce torsion into the beam so I would need to some how brace the beam to mitigate the torsion but that is easier said than done.

Just looking for any advice as too what others are doing.

Thanks!

 

[cdafd]

Not into jumping out of a good plane or lowering down from a high place

Appears there are systems out there to meet your need


One example

https://www.firefacilities.com/accessory/rappelling-anchor-swivel/

https://www.archtoolbox.com/window-washing-equipment-design/

engineeredfallprotection

Not 10,000:::

https://fall-arrest.com/fall-protection-solutions/anchor-points/tieback-anchor/

I think our last new station has a tie off, not sure what was used

 

[MJCronin]

" a 10,000 lbs ultimate load in any direction as prescribed in the NFPA ?".... Where ?... which NFPA standard ?

"Any direction" ..? ... For what purpose would there be a 10k upward load on a steel framed building ?

Will there be elephants rappelling down from the roof ?

MJCronin
Sr. Process Engineer

 

[Brandon Clark]

I have the same feeling. It has a very high factor of safety. Just looking to see if anyone has come across this issue as putting that kind of load into an existing building requires significant reinforcement.

 

[cdafd]

Maybe call this company and talk to thier engineers…

Seems like they have it figured out


Can be added to any floor or roof deck or mounted overhead. Rated for an ultimate load of 10,000 lbs and working load of 1,000 lbs (exceeds OSHA load requirement 29 CFR 1926.502(d)(15) and meets NFPA 1402 standard 11.2.1). The anchor housing is constructed of aircraft quality galvanized alloy and capable of a 360-degree swivel and 180-degree pivot. To ensure the safety of trainees, each anchor is 200% proof-load tested. Rappelling exercises can be used to simulate high-angle rescue, helicopter deployment, or raising a victim or equipment.

https://www.firefacili/

 

[cdafd]

Or this same one

Increased Rappelling Anchor Strength: 10,000 lb rated rappelling anchors

https://www.firefacilities.com/fire-training-towers/ibc-nfpa-1402-compliant/

Looks like it is based on the force of a person or two in free fall??