BHMA A156-19:2013 pdf download.AMERICAN NATIONAL STANDARD FOR POWER ASSIST AND LOW ENERGY POWER OPERATED DOORS
3. REQUIREMENTS FOR POWER ASSIST DOORS
3.1 Activation Power assist doors shall operate only by pushing or pulling the door. An activating means is permitted to be used to put the door in the power assist mode.
3.2 Opening If the opening force on the door is released, the door shall come to a stop and either immediately begin to close or begin to close after a predetermined time.
3.3 Time Delay Not required.
3.4 Closing Doors shall close from 90 degrees to 10 degrees from closed, in 3 seconds or longer as required in Table I. Doors shall close from 10 degrees to fully closed in not less than 1.5 seconds.
3.5 Force and Kinetic Energy The force required to prevent a door from closing shall not exceed 15 lbf (67 N) measured 1 inch (25 mm) from the latch edge of the door at any point in the closing cycle. Doors shall open with a manual force not to exceed 15 lbf (67 N) to release a latch if equipped with a latch, 30 lbf (133 N) to set the door in motion, and 15 lbf (67 N) to fully open the door. The forces shall be applied at 1 inch (25 mm) from the latch edge of the door.
3.6 Signage See Section 6 for signage.
4. REQUIREMENTS FOR 140W ENERGY POWER OPERATED DOORS
4.1 Activation The operator shall be activated by a knowing act.
4.2 Opening Doors shall open from closed to back check, or 80 degrees which ever occurs first, in 3 seconds or longer as required in Table I. Backcheck shall not occur before 60 degrees opening. Total opening time to 90 degrees shall be as in Table II. If the door opens more than 90 degrees, it shall continue at the same rate as backcheck speed.
4.3 Time Delay When powered open, the door shall remain at the fully open position for not less than 5 seconds. Exception: When push-pull activation is used, the door shall remain at the fully open position for not less than 3 seconds.
4.4 Closing Doors shall close from 90 degrees to 10 degrees in 3 seconds or longer as required in Table 1. Doors shall close from 10 degrees to fully closed in not less than 1.5 seconds.
4.5 Force and Kinetic Energy The force required to prevent a stopped door from opening or closing shall not exceed 15 lbf (67 N) measured 1 inch (25 mm) from the latch edge of the door at any point during opening or closing. The kinetic energy of a door in motion shall not exceed I .25 Ihf-ft (1 .69 Nm). Table I provides minimum times for various widths and weights ot doors for obtaining results complying with this kinetic energy. Doors shall open with a manual force not to exceed 15 lbf (67 N) to release a latch, if equipped with a latch, 30 lbf(133 N) to set the door in motion, and 15 lbf(67 N) to fully open the door. The forces shall be applied at 1 inch (25 mm) from the latch edge of the door.BHMA A156-19 pdf download.