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I i <br /> BUILDING ROOF VENTILATION <br /> Area of roof over conditioned space 1 ,627.3 sq.ft. <br /> Area if roof over upper yarage 533.5 ssq.ft. <br /> Area requiring ventilation 2,161 .8 sq.ft. <br /> Using ratio of 1/150 <br /> 2, 161 .8 sq.ft. / 150 = 14.412 sq.ft. to vent <br /> 14.412 sq.ft. equates to 2,075.3 square inches <br /> Continuous ridge vent has 13.03 square inches per <br /> foot. There is approximately 1 UO working ridge <br /> ventilation or 1 ,303 square inches at the ridge to <br /> exhaust ventilation air. <br /> At the eves of the building there will be about 146 <br /> lineal feet of vented blocking or 73 blocks. Each <br /> block as 9.42 square inches per block for venting. 73 <br /> X 14.72 sq. inches = 1 ,074.5 square inches for <br /> venting. <br /> With 1 ,303 sq. inches at the ridge and 1 ,074.5 square <br /> inches at the eve, the building has 2,377.5 sq. inches <br /> for venting of attic space. The amount of area for <br /> venting available exceeds the calculated amount of <br /> venting needed. Therefore the venting of this buildin <br /> complies with regulatory needs. l <br /> 3 <br />