Duct Construction Standards

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I I I I I II. IIII II. II I. II A RD INDU I I. W S. . I. II. II. TR . 7 th . III. . IIIIIIIIII. . DU. IES . IIIIIIIIIII. CT CON. . Rev isio S. n*. . . III. RD. ST. . R . I. II. A. UC D. II. TIO N S T A N. I. II. II II. II IIII. IIIIIII. * Revised to be in compliance with smacna hvac . Duct Construction Standards , 2nd ed., 1995. Duct Construction Standards For Positive & Negative Static Pressures And Submittal Data Engineering Specifications PROJECT SUBMITTED BY. LOCATION. CONSULTANTS TO THE SHEET METAL INDUSTRY. ENGINEER DATE.

entire duct system. Pressure in ducts near room air terminals is nearly always below 1/2” w.g. *Asterisks indicate wording that is taken directly and verbatim from the SMACNA HVAC Duct Construction Standards, 2nd ed., 1995. SMACNA TABLE 1-2 DUCT SEALING REQUIREMENTS Seal Class Class Sealing Required Static Pressure Construction Class A

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