A. Cement floors:
1. Mix: (See subsections 8-3-5B and K of this chapter.)
2. Heater room floors on wood construction where solid or liquid fuel is used: Minimum thickness 4".
a. Use sheet metal over tops of joist for concrete forms or cut in 1" boards flush with top of joists. If wood boards are used, remove after the slab has set.
b. Reinforce slab with wire mesh weighing not less than 30 pounds per 100 square feet, or with 1/4" bars spaced 1' on center each way.
3. Heater room floors on wood construction where gas burning equipment raises temperature of floor to above 160°, comply with the provisions set above (see section 8-3-24, appendix A, of this chapter).
B. Wood floors: (See subsection 8-3-8C5 of this chapter.)
1. Materials:
a. Flooring kiln dried material.
b. Strip flooring: Hardwood or softwood; minimum thickness: 23/32". Maximum width: 21/4" for hardwood; 31/4" for softwood. 3/8" thickness may be used where laid directly on a subfloor. Wider widths (plank flooring) and parquet flooring may be used when precautions are taken to prevent warping or cupping.
c. Nails: Maximum spacing: 12" on center.
d. Wood block floorings on concrete: Set blocks in mastic and install in accordance with flooring manufacturer's directions.
C. Ceramic tile:
1. Materials: (See section 8-3-24, appendix A, of this chapter.)
2. Grade: Not less than "standard grade".
3. Setting bed: Mix 1 part Portland cement, 4 parts sand; or 1 part Portland cement, 2 parts sand and 4 parts pea size aggregate. Minimum thickness: 11/4", if reinforced with wire mesh; 3", when installed below top of chamfered joists, with finish tile surface at least 11/2" above top of joists.
4. When applied over wood subfloor: Install asphalt saturated felt over subfloor underneath the wire mesh.
5. Where other methods are used, follow manufacturer's specifications.
D. Rubber tile, asphalt tile, and linoleum:
1. Rubber tile, linoleum or asphalt tile may be used on slabs bearing on the ground, provided the slab area where the tile are to be applied has first been covered with membrane waterproofing.
2. Install according to manufacturer's instructions.
3. Install over lining felt, approximately 1 pound per square yard, when applied over wood subflooring.
4. Hardboard, plywood or similar underlayment leveler having a nominal thickness of 1/4", shall be used over wood subfloors to provide a smooth, flat surface for the finish floor covering (including wall to wall carpeting) where needed. Apply in accordance with manufacturer's recommendations.
5. Vinyl tile flooring: (See manufacturer's installation recommendations.) (Ord. 2008-09-01, 9-24-2008)