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13. Concrete masonry units with a thickness of 6 inches with partial <br /> grouting and reinforcing spaced at 24 inches on-center. <br /> 14. Concrete masonry units with a thickness of 8 inches with partial <br /> grouting and reinforcing spaced at 24 inches on-center. <br /> 15. Interior or exterior wall with laterally braced 2 inch x 4 inch wood <br /> studs with sheathing on either side of 22 gage sheet metal. <br /> Sheathing shall be attached to studs with fasteners at 6 inches (152 <br /> mm) on center for edge and field fastening. <br /> R323.7 Ventilation. The residential safe room shall be naturally <br /> ventilated to allow the enclosure to have approximately one air change <br /> every two hours. This requirement may be satisfied by 12 square <br /> inches of venting per occupant. There shall be at least two operable <br /> vents. The vents shall be protected by a cowling or other device that <br /> shall be impact tested to comply with ASTM E 1996-14 Level D. <br /> Alternatively, the room shall be evaluated to determine if the openings <br /> are of sufficient area to constitute an open or partially enclosed <br /> condition as defined in ASCE 7. <br /> R323.8 Communications. The residential safe room shall be <br /> equipped with a phone line and telephone that does not rely on a <br /> separate electrical power outlet. Alternatively, a wireless telephone <br /> shall be permitted to rely on an Uninterruptible Power Supply(UPS) <br /> battery device. <br /> R323.9 Construction documents. Construction documents for the <br /> residential safe room shall be directly prepared by a Hawaii licensed <br /> professional structural engineer. <br /> R323.10 Special inspection. The construction or installation of the <br /> residential safe room shall be verified for conformance to the drawings <br /> in accordance with the appropriate requirements of Chapter 17 of the <br /> International Building Code. <br /> R323.11 Notification. The owner of the safe room shall notify the <br /> State Department of Defense and County Civil Defense Agency of the <br /> property's Tax Map Key or Global Positioning System coordinates." <br /> (36) Section R326, "Swimming Pools, Spas and Hot Tubs" of the International <br /> Residential Code, is amended to read as follows: <br /> "R326.1 General. [The design and construction of pools and spas shall <br /> comply with the International Swimming Pool and Spa Code.] <br /> Swimming pools shall comply with the requirements of sections R326.2 <br /> through R326.4 and other applicable sections of this code. <br /> 30 <br />