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| All equipment shall be inspected for compliance with appropriate dimensions, as stated in each standard, as well as to determine if it is in satisfactory operating condition (i.e.; adherence of mortar, deformed molds, etc.). Inspection shall occur at least annually, or whenever there is reason to suspect nonconformance with the standard. |
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| Item | Type A meter | |
| Description | Measuring bowl and cover assembly made of steel, hard metal, or other hard material | |
| Calibration Item | Volume of bowl | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1, A1.3 | |
| Calibration Interval | Occasionally | |
| Calibration Item | Expansion factor | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.5.1 | |
| Calibration Interval | none stated | |
| Calibration Item | Calibration reading | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.6 | |
| Calibration Interval | non stated | |
| Calibration Item | Operating pressure | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.7, A1.8 | |
| Calibration Interval | Frequently | |
| All of the above calibration items shall be checked after rough handling, changes in barometric pressure, changes of more than 600 ft. in elevation | ||
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| Item | Spray tube for a Type A meter | |
| Description | Used to aid the addition of water to a meter | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Type B Meter | |
| Description | Measuring bowl and cover assembly made of steel, hard metal, or other hard material | |
| Calibration Item | Volume of Bowl | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.3 | |
| Calibration Interval | Occasionally | |
| Calibration Item | Expansion factor | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.5.2 | |
| Calibration Interval | none stated | |
| Calibration Item | Graduation on the dial face | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.9 | |
| Calibration Interval | Frequently | |
| All of the above calibration items shall be checked after rough handling | ||
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| Item | Calibration vessel | |
| Description | A vessel of known volume that is used to calibrate a Type B meter | |
| Calibration Item | Weight of water required to fill the vessel | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.2 | |
| Calibration Interval | Occasionally | |
| Calibration Item | Effective volume of the vessel | |
| Calibration Procedure | AASHTO T 152 Sec. Annex A1.4 | |
| Calibration Interval | Occasionally | |
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| Item | Coil spring or other device | |
| Description | Used to hold the calibration cylinder in place | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Sieves | |
| Description | 1.5" pan sieve | |
| Calibration Item | Size of openings and wire diameter | |
| Calibration Procedure | AASHTO T 152 Sec. 7.1 AASHTO M 92 (ASTM E11, Annex A1) via AASHTO T 141 |
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| Calibration Interval | None stated | |
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| Item | Tamping Rod | |
| Description | 5/8" diameter straight steel rod, with hemispherical tip, not less than approximately 16" in length | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Mallet | |
| Description | Rubber or rawhide, 1.25 + 0.50 lb., or 2.25 + 0.50 lb. | |
| Calibration Item | Mass | |
| Calibration Procedure | Weigh with a balance | |
| Calibration Interval | None stated | |
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| Item | Strike-off bar or plate | |
| Description | For removing excess concrete from the top of the mold, flat rectangular steel or acrylic plate of appropriate dimensions for each material | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Funnel | |
| Description | Used to aid the pouring of water in to the meter | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Measure for water | |
| Description | A container to hold the water that is poured in to the meter | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Miscellaneous Tools | |
| Description | Shovel, scoop, trowel | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Internal Vibrator | |
| Description | 7000 vibrations per minute, or greater, while in use and of appropriate size . | |
| Calibration Item | Frequency | |
| Calibration Procedure | AASHTO T 152 Sec. 4.15 With a vibrating reed tachometer, per AASHTO T 126 Sec. 3.6 |
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| Calibration Interval | None stated | |
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| Item | External Vibrator | |
| Description | 3600 vibrations per minute, or greater.. | |
| Calibration Item | Frequency | |
| Calibration Procedure | AASHTO T 152 Sec. 4.15 With a vibrating reed tachometer, per AASHTO T 126 Sec. 3.6 |
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| Calibration Interval | None stated | |
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