A. Cement Floors:
1. Mix: See subsection 8-1A-3-5B and K2 of this Article.
2. Heater Room Floors on Wood Construction Where Solid or Liquid Fuel is Used:
a. Minimum thickness, four inches (4").
b. Use sheet metal over tops of joists for concrete forms or cut in one inch (1") boards flush with top of joists. If wood boards are used, remove after the slab has set.
c. Reinforce slab with wire mesh weighing not less than thirty (30) pounds per one hundred (100) square feet, or with one-fourth inch (1/4") bars spaced one foot (1') on center each way.
3. Heater Room Floors on Wood Construction Where Gas Burning Equipment Raises Temperature of Floor to Above One Hundred Sixty Degrees (160°) Fahrenheit: Comply with the provisions of paragraph 2 above. See American Gas Association specifications.
B. Wood Floors: See subsection 8-1A-3-8C5 of this Article.
1. Materials:
a. Flooring: Kiln-dried material.
b. Strip Flooring, Hardwood or Softwood: Minimum thickness, 25/32 inch; maximum width, two and one-fourth inches (21/4") for hardwood, three and one-fourth inches (31/4") for softwood. Three-eighths inch (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, sixteen inches (16") on center.
d. Building Paper or Deadening Felt: Apply under all finish flooring unless floor is insulated.
2. Installation:
a. Finish Flooring over Subflooring: Apply at right angles to subflooring except when subflooring is laid diagonally.
b. Finish Flooring on Strips: Wood strips, minimum size, one inch (1") by two inches (2"); maximum spacing, sixteen inches (16") on center. Apply strips over building paper or deadening felt on top of subflooring.
c. Strip Flooring on Concrete: Apply on not less than two inches (2") by two inches (2") sleepers embedded in concrete.
d. Wood Block Floorings on Concrete: Set blocks in mastic and install in accordance with flooring manufacturer's directions.
C. Ceramic Tile: See subsection 8-1A-3-8C5f of this Article.
1. Materials: See ASTM C 126-52T.
2. Grade: Not less than standard grade.
3. Setting Bed:
a. Mix one part Portland cement, four (4) parts sand; or one part Portland cement, two (2) parts sand, and four (4) parts pea-size aggregate.
b. Minimum thickness, one and one-fourth inches (11/4"), if reinforced with wire mesh; three inches (3") when installed below top of chambered joists, with finish tile surface at least one and one-half inches (11/2") above tops of joists.
4. When Applied Over Wood Subfloor: Install asphalt-saturated felt over subfloor underneath the wire mesh.
D. Rubber Tile, Asphalt Tile, Linoleum and Wall-to-Wall Carpeting:
1. Do not apply rubber tile or linoleum on slabs resting on the ground. 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. Hardboard, plywood or similar underlayment leveler having a nominal thickness of one-fourth inch (1/4") shall be used over wood subfloors to provide a smooth, flat surface for the finish floor covering (including wall-to-wall carpeting). Apply in accordance with manufacturer's recommendations.
3. Adhesive for flooring to be waterproof; type as recommended by manufacturer of the floor covering. (Ord. 0-71-12, 3-11-71)