The department of health will approve the installation of all FAS except for manufactured homes (see WAC 246-359-720) when the following requirements are met:

(1) New and relocated FAS must be installed according to the manufacturer's written instructions;

(2) If the manufacturer's written instructions are unavailable or insufficient to address safe installation the department of health will require installation instructions for FAS to be submitted by an engineer or architect;

(3) The department of health will inspect FAS installation to determine if the site is properly prepared and the FAS is anchored according to the:

(a) Manufacturer's installation instructions; or

(b) Design of either an engineer or an architect.

(4) The requirements stated in WAC 246-359-720 (5) through (8) apply to FAS installation.