under the Manufacturer’s Standard. See Figure 5.1.2. The recommended number and placement of air terminals is based on Heary Bros.’ experience and its air terminals and the configuration of those terminals have not been scientifically proven or guaranteed to have a measurable zone of protection. Conductors shall be securely fastened to roof or structure at intervals not exceeding 3’0” on center. ESE Air Terminals shall be provided with a minimum of two paths to ground. Cables shall maintain a horizontal or downward path to ground to avoid “U” and “V” (down and up) pockets. See Figure 5.1.4 No Bend of a conductor shall form an included angle of less than 90 degrees or have a radius of bend less than 8 inches nor shall a conductor rise greater than 8”. However conductors may raise a rate of 3” per 12” of run. See Figure 5.1.3 and Figure 5.1.4 In situations where multiple air terminals are required, the perimeter air terminals shall be positioned so that they are not more than 230’ (70m) for the outside edge of the building nor shall the ESE Air Terminals be spaced more than 460’ (140m) apart at any time. A cross run cable shall be provided at intervals of 1000’ (305m) when building exceeds 2000’ (610m) in length in any direction. See Fig 5.1.1.1. The recommended number and placement of air terminals is based solely on Heary Bros.’ 30 years of experience and its air terminals and the configuration of those terminals have not been scientifically proven or guaranteed ho have a measurable zone of protection. Down Conductors in situations where multiple ESE Air Terminals are required shall be spaced at intervals no more than 500’ (152m) apart around the perimeter of the structure. The recommended number and placement of air terminals is based solely on Heary Bros.’ 30 years of experience and its air terminals and the configuration of those terminals have not been scientifically proven or guaranteed to have a measurable zone of protection.
In situations where multiple air terminals are required, the perimeter air terminals shall be positioned so that they are no more than 230’ (70m) from the outside edge of the building nor shall be ESE Air Terminals be spaced more than 460’ (140m) apart at any time. A cross run cable shall be provided at intervals of 1000’ (305m) When building exceed 200’ (610m) in length in any direction. See Figure 10.8.1. The recommended number and placement of air terminals is based solely on Heary Bros.’ 30 years of experience and its air terminals and the configuration of those terminals have not been scientifically proven or guaranteed to have a measurable zone of protection. Down Conductors in situations where multiple ESE Air Terminals are required shall be spaced at intervals no more than 500’ (152m) apart around the perimeter of the structure. Bonding connections shall be made with main size conductor to all rebar, reinforcing rod, structural steel, interior wall wire mesh, nylon mesh in stucco walls, etc., whether exposed or not, at the upper and lower extremities of each down conductor. Care shall be taken to assure that all rebar, reinforcing rod, structural steel, interior wall mesh, nylon mesh in stucco walls etc, whether exposed or not is electrically continuous or made so. (See Fig. 10.9.1 and Fig 10.9.2).