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| | | Concrete: |
| | | | Flexural Strength: 2500 to 3000 psi (17.25 - 20.7 MPa) in accordance with ASTM C 293 |
| | | | Water Absorption: 3 to 4 percent absorption in accordance with ASTM C 67 |
| | | Aggregate: Report sieve analysis in accordance with ASTM C 136 |
| | | Reinforcing Bars: #3 - 3/8 inch (10mm) deformed rebar meeting the requirements of ASTM A 615, Grade 40 |
| | | Embedded Stair Tread Anchor Bolts: ASTM F 1554, Grade 36 |
| | | | Provide hot-dip or mechanically deposited, zinc-coated anchor bolts with nuts for attaching and securing stair treads to stair framing |
| | | | Stair tread manufacturer's standard "shoulder nut" anchor bolt design to resist damage due to excessive torque stress on anchor bolt nut, or normal stair movement |
| | | Water: Potable |
| | | Tread Dimensions: |
| | | Tread Width: |
| | | Tread Thickness: |
| | | Tread Profile/Edge: |