LiftMaster LA400 LA400 Manual - Page 5
» Gate Construction Information
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SAFETY » GATE CONSTRUCTION INFORMATION Vehicular gates should be installed in accordance with ASTM F2200: Standard Specification for Automated Vehicular Gate Construction. For a copy, contact ASTM directly at 610-832-9585 or www.astm.org. 1. GENERAL REQUIREMENTS 1.1 Gates shall be constructed in accordance with the provisions given for the 3.1.3 A gap, measured in the horizontal plane parallel to the roadway, between a appropriate gate type listed, refer to ASTM F2200 for additional gate types. fixed stationary object nearest the roadway, (such as a gate support post) and the gate frame when the gate is in either the fully open position or the 1.2 Gates shall be designed, constructed and installed to not fall over more than fully closed position, shall not exceed 2-1/4 inches (57 mm), refer to ASTM 45 degrees from the vertical plane, when a gate is detached from the F2200 for Exception. supporting hardware. 3.1.4 Positive stops shall be required to limit travel to the designed fully open and 1.3 Gates shall have smooth bottom edges, with vertical bottom edged fully closed positions. These stops shall be installed at either the top of the protrusions not exceeding 0.50 inches (12.7 mm) when other than the gate, or at the bottom of the gate where such stops shall horizontally or exceptions listed in ASTM F2200. vertically project no more than is required to perform their intended 1.4 The minimum height for barbed tape shall not be less than 8 feet (2.44 m) function. above grade and for barbed wire shall not be less than 6 feet (1.83 m) 3.1.5 All gates shall be designed with sufficient lateral stability to assure that the above grade. gate will enter a receiver guide, refer to ASTM F2200 for panel types. 1.5 An existing gate latch shall be disabled when a manually operated gate is retrofitted with a powered gate operator. 3.2 The following provisions shall apply to Class IV vehicular horizontal slide gates: 1.6 A gate latch shall not be installed on an automatically operated gate. 3.2.1 All weight bearing exposed rollers 8 feet (2.44 m), or less, above grade 1.7 Protrusions shall not be permitted on any gate, refer to ASTM F2200 for shall be guarded or covered. Exceptions. 3.2.2 Positive stops shall be required to limit travel to the designed fully open and 1.8 Gates shall be designed, constructed and installed such that their movement shall not be initiated by gravity when an automatic operator is disconnected. fully closed positions. These stops shall be installed at either the top of the gate, or at the bottom of the gate where such stops shall horizontally or vertically project no more than is required to perform their intended 1.9 A pedestrian gate shall not be incorporated into a vehicular gate panel or function. that portion of the adjacent fence that the gate covers in the open position. 2. SPECIFIC APPLICATIONS 2.1 Any non-automated gate that is to be automated shall be upgraded to conform to the provisions of this specification. 2.2 This specification shall not apply to gates generally used for pedestrian access and to vehicular gates not to be automated. 4. VEHICULAR HORIZONTAL SWING GATES 4.1 The following provisions shall apply to Class 1, Class II and Class III vehicular 2.3 Any existing automated gate, when the operator requires replacement, horizontal swing gates: shall be upgraded to conform to the provisions of this specification in effect at that time. 4.1.1 Gates shall be designed, constructed and installed so as not to create an entrapment area between the gate and the supporting structure or other 3. VEHICULAR HORIZONTAL SLIDE GATES fixed object when the gate moves toward the fully open position, subject to the provisions in the 4.1.1.1 and 4.1.1.2. 3.1 The following provisions shall apply to Class I, Class II and Class III vehicular horizontal slide gates: 4.1.1.1 The width of an object (such as a wall, pillar or column) covered by a swing gate when in the open position shall not exceed 4 inches (102 mm), 3.1.1 All weight bearing exposed rollers 8 feet (2.44 m), or less, above grade shall be guarded or covered. measured from the centerline of the pivot point of the gate, refer to ASTM F2200 for exception. 3.1.2 All openings located between 48 inches (1.22 m) and 72 inches (1.83 m) above grade shall be designed, guarded or screened to prevent a 4 inch (102 mm) diameter sphere from passing through the openings anywhere in the gate, and in that portion of the adjacent fence that covers in the open position. 4.1.1.2 Except for the zone specified in Section 4.1.1.1, the distance between a fixed object such as a wall, pillar or column, and a swing gate when in the open position shall not be less than 16 inches (406 mm), refer to ASTM F2200 for exception. 4.2 Class IV vehicular horizontal swing gates shall be designed, constructed and installed in accordance with security related parameters specific to the application in question. 4