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I wonder if I may ask for your opinion on a "anchor" issue. I've been aware of your expertise for many years, own both of your volumes on technical rescue and have great respect for your skill and understanding of this part of our profession.
My department is evaluating a pre-plan for high angle rescue off of a satellite dish in our response area.
The area we expect to have to operate in is only 45 - 50' off the ground, but we have no anchors available on the 4' deep pad it sits on. The pad is 30' x 30' square. The place is ringed by a slope, a cyclone and barb wire fence and options for aerial use are limited and as we both know not the best plan. The chiefs want to eliminate the engine as our anchor for the 3:1 system we are training with for the rescue.
As a replacement, they have come up with a 34" x 8" x 3/8" steel plate, with 14" high, 1/4" steel brackets welded onto the plate as anchor points. Both brackets are welded to the plate, and re-enforced with eight 3/4" x 6" bolts. Roughly seven to eight of these things would be installed into the 4' deep concrete pad to support a rope system that is intended to lower a rescuer and victim.
My inquiries into whether it met the 15/1 ratio and whether it needed to meet any type of testing in order to keep us out of OSHA's clutches resulted in me being tasked with finding out.
I wonder if you have had to request similar anchors be made and what features have you employed? I'm accustomed to choosing anchors based on whats immediately available. I've never had to design or engineer one. What is your take, if I might ask?
With all due respect,
Ben Fleagle
Captain, University Fire
Fairbanks, Alaska fnbdf@uaf.edu/ (907) 460-0721
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