ANSI BHMA A156.8:2000 pdf free

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ANSI BHMA A156.8:2000 pdf free.DOOR CONTROLS – OVERHEAD STOPS AND HOLDERS.
2.2 Cycle Test 2.2.1 Single Point Adjustable Hold Open Types. Door holders with a single point hold open function shall be adjusted to withstand a minimum ofa 15 lbf (67 N) perpendicular to door in direction of closing, without releasing. Doors shall be mechanically pushed or pulled into hold open, and pulled or pushed back to a closed position for the requirements specified in 2.2.6. Adjustment shall be checked at 1/2 the total cycles required and readjusted to the 15 lbf (67 N), if necessary. At the end of the test, the force required to close the door shall be not less than a 10 lbf (44 N) or more than a 20 lbf (89 N) and shall be capable of readjustment to a 15 lbf (67 N). 2.2.2 Single Point Non-Adjustable Hold Open Types. Door holders shall be capable of withstanding a minimum ofa 15 lbf (67 N) perpendicular to the door in the direction of closing without releasing at the start of the test. Doors shall be mechanically pushed or pulled into hold open and pulled or pushed back to a closed position for the requirements specified in 2.2.6. At the end of one half the cycling period, they shall have a minimum holding force ofa 10 lbf (44 N). At the conclusion of the cycle test they shall not have lost more than 50% of the original holding force. 2.2.3 Positive Type Holders less Automatic Release Feature. Doors shall be mechanically pushed or pulled into hold open and mechanically released and closed for the requirements specified in 2.2.6. 2.2.4 Friction Slide Type Holders. Frictional holders shall be adjusted to resist an 8 lbf (36 N) and readjusted to an 8 lbf (36 N) at the end of each 10,000 cycles. At the end of the test, holder shall be capable of readjustment to resist an 8 lbf (36 N) without the necessity of renewing the friction unit. Apparatus shall operate at a 15 second cycle土2 seconds. Total cycle test for the friction holders is specified in 2.2.6. 2.2.5 Non-Friction Slide or Stop Only Types. These types that are without the hold open feature are required only to complete the cycle test in the applic.ANSI BHMA A156.8 pdf download.

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