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1224.5.1 Floor basez Floors of basements, except as provided for in Section 1224.1.1 shall be placed over a base course not less than 4 inches (102mm) in thickness that consists of gravel or crushed stone containing not more than 10 percent material that passes through a No. 4 sieve. The floor base shall be placed in such a way as to provide discharge of the drainage from all areas of the floor base in accordance with Section 1224.5.3. (Article 18 Steel) (SECTION 1802.0 FORMED STEEL CONSTRUCTION) 1802.S Identification: Each structural member, siding panel and roof panel of a metal building system shall be identified by the manufacturer. The identification shall include the manufacturer~s name or logo and the part number or part name consistent with assembly instructions. Hardware items such as bolts, nuts, rivets and washers shall be identified by standard industry markings. (Article 21 Exterior Walls) (SECTION 2101,0 PERFORMANCE REQUIREMENTS) 2101.6.11.4 Certified Elevations: Any building to be constructed in a flood plain area other than alterations or additions to existing residences shall have the low sill elevation certified by a Registered Engineer or Land Surveyor, licensed in the State of Missouri, before approval of the required foundation inspection can be given. (Article 23 Roofs and Roof Coverings) (SECTION 2305.0 PRESCRIPTIVE REQUIReMeNTS) 2305.2.3 ASphalt shingles: Asphalt shingles shall conformto ASTM D225 or D3462 listed in Appendix A. Asphalt shingles shall not be installed on roof slopes below two units vertical in 12 units horizontal (2:12). Double-layer underlayment shall be required on roof slopes below four units vertical in 12units horizontal (4:12). Single-layer underlayment is required on all other roof slopes. Asphalt shingles shall be secured to the roof with not less than four fasteners per strip shingle, or not less than two fasteners per individual shingle. Shingle headlap shall not be less than 2 inches (51 mm). All roof underlayment shall conform to the standards of ASTMD-226-S8 as published by theAmerican Society for Testing and Materials. (SECTION 2308,0 REROOFING) 2308,5 Flashings: Flashings shall be installed in accordance with approved manufactures installation instructions. (Article 25 Mechanical Equipment and Systems) (SECTION 2500.0 GENERAL) 2500.2 Mechanical code: All mechanical equipment and systems shall be constructed, installed and maintained in accordance with the mechanical code adopted under Section 6-20 of the Municipal Code of the City of University City, Missouri. 15