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Connection between existing roof curb and new curb adapter <br />Connection between new curb adapter and new HVAC unit is similar. <br />Uplift 277 lb=(ASD - wind load) <br /> Tek Screws <br />Six (6) #12x1" Tek screws connect a 16 ga. strap to a 16 ga. roof curb and six (6) more <br />Tek screws connect the same 16 ga. strap to the steel HVAC unit rail. These Tek <br />screws resist uplift in shear at each corner. <br />Shear capacity of Tek screws - #12x1" <br />(aka 12-14 per ICC ESR-1976)Shearcapacity.tek 308 lb⋅:= <br />Nscrew 6:=Number of screws <br />Nscrew Shearcapacity.tek⋅ <br />Uplift <br />6.663=> 1.0 GOOD <br />There will also be these same strap clips w/ screws at the midspan of the unit that will be <br />used to resist the shear forces from the unit (4 min). <br />V unit.ASD 0.6 Fh.wind⋅( )1203.343 lb=:= <br />Nclips 4:=Number of clips resisting shear <br />Nscrew 6= <br />Nscrew Nclips⋅Shearcapacity.tek⋅ <br />Vunit.ASD <br />6.143=> 1.0 GOOD <br />__________________________ <br />BRAD YOUNG & ASSOCIATES <br />STRUCTURAL ENGINEERING <br />345 Pollasky Ave. <br />Clovis, California, 93612 <br />(559) 323-9600 (559) 323-9633 Fax <br />____________________________________________________ <br />Copyright 2024 Brad Young & Associates <br />Print Date: 10/21/2024 <br />File Name: 24297 - PC RESPONSE.xmcd <br />Engineer:_ CG _ <br />6 <br />1740 E Edinger Ave <br />11/27/2024