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Part 900 — Incidental Construction and Services

930Plant Field Laboratory

RI · 2022 (Aug 2025 compilation) Standard Specifications✓ Full text on BuildSpecBook pages 688–695 Save this section

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— PLANT FIELD LABORATORY

930.01DESCRIPTION

This work includes furnishing a building at the site of the production plant for the Department ’s exclusive use for testing.

930.02GENERAL PLANT FIELD LABORATORY REQUIREMENTS

Location. Locate the laboratory within its own building or, if the Engineer permits, it may be part of an existing building. In this case, ensure that the laboratory portions of the building are entirely partitioned off from the remaining unrelated areas and meet all other laboratory requirements. The Department does not permit the use of a trailer, utility control room such as electric, telephone, water, sewage, etc., as a Department designated laboratory and/or office. Ensure that the laboratory is within sight distance of the plant and sampling rack (asphalt only) and maintains an unobstructed line-of-sight at all times. Construction. Provide a laboratory building that: • Has a room at least 200 sq ft with a ceiling height at least 7½ ft • Provides a sturdy and level floor (note that some equipment requires mounting to a concrete foundation) • Is watertight • Has at least two standard windows equipped with shades and screens and two doors equipped with adequate locks • Has at least one door and window that opens to the outside external environment when the laboratory is located on an external wall Other Requirements.

a.Equipment. In case of theft or breakdown, repair or replace all equipment involved within

48 hours. Discontinue the production of any material until the equipment is repaired or replaced. If buildings are destroyed or rendered untenable for any reason, replace them within two weeks. In the interim, provide temporary facilities for laboratory operations.

b.Ut

ilities . Furnish all water, fuel, and electrical power required to conduct the various tests. Additional laboratory equipment not listed herein may be required to properly facilitate an AASHTO or ASTM test procedure ( e.g., water bath thermometers, water bath heater/circulator, timers/stopwatches) and are considered incidental to this item.

c.C

oncrete . When both asphalt and cement concrete mixing plants are located in the same compound and when the Contractor provides one laboratory building for both asphalt and cement concrete testing facilities, duplication of laboratory equipment will not be required

Part 900 — Incidental Construction and Services August 2025

900-82SECTION 930 — PLANT FIELD LABORATORY

with the exception of the chairs, calculator , and the computer equipment specified in Subsection 930.03.4. ADA Considerations. Ensure that the accommodations comply with Federal Law under Title I of the Americans with Disabilities Act (ADA).

930.03SPECIFIC PLANT FIELD LABORATORY REQUIREMENTS

Interior Utilities.

a.Power. Ensure that the electrical power supply is adequate to simultaneously operate all

laboratory and office equipment, heating and air conditioning units, lighting, and all other utilities.

b.H eating and Air Conditioning. Provide heating and cooling systems that can maintain the

laboratory at a year -round temperature between 68°F and 78°F, with controls in the laboratory.

c.S anitary Facilities . Provide restroom facilities that include a toilet, lavatory sink, slop sink,

vent fan, and running hot and cold water, with a minimum 5-gal capacity water heater tank. Ensure that the restroom is fully equipped and located within the laboratory or existing building and is accessible at all times during production.

d.Li ghting. Provide adequate and satisfactory lighting inside the laboratory (10 ft-candles

minimum per OSHA Standard 1926.56).

e.Tel ephone. Provide one handset with an answering machine.

Outside Facilities.

a.Parking Area. Provide a parking area (adequate for two vehicles) adjacent to the building

so that safe and easy access to the laboratory building is ensured. Provide parking areas that are paved or well-compacted crushed gravel with maintained surface characteristics.

b.Li ghting. Provide adequate outside lighting (5 ft-candles minimum per OSHA Standard

1926.56) for bins, stockpiles, sampling racks, laboratory access , and parking area for all

night and early morning work.

c.S ecurity . Ensure that the laboratory building has locking doors and windows.
d.Equipment. Ensure that bins for coarse and fine aggregates are safe and accessible for

sampling. Furnishings, Equipment, and Supplies. For all of the following, provide new or used items in a condition acceptable to the Engineer (minimum quantities shown):

Part 900 — Incidental Construction and Services August 2025

SECTION 930 — PLANT FIELD LABORATORY 900-83

• One office desk, 30 in. high with minimum 32 in. × 60 in. top dimensions and with two or more drawers on each side • One worktable or bench • Two swivel desk chairs • One fireproof filing cabinet with lock • A cabinet or closet with lock • One wastebasket • A cooling fan • A hood with an exhaust fan or dust eater for ventilation near the scales • A copy machine with paper and toner • A minimum 4.0 cu ft refrigerator • A microwave oven • One water cooler and fresh drinking water or a supply of bottled drinking water (to be restocked as necessary) • Clock • Calculator • Electric pencil sharpener • One first-aid kit, fully stocked • One fire extinguisher • Cleaning supplies for lab and lavatory, to be restocked as necessary • Shop vacuum • Toilet paper holders, paper towel dispensers, and soap dispensers in the lavatory • Rugs with non-slip backing for all doors (2 ft × 3 ft minimum size or interior door mats) Computer Equipment. Provide the items of computer equipment and software according to Subsection 929.03.5(c), and ensure that the equipment meets the following minimum specifications: • One computer running activated Windows Professional (latest version) 64-bit • Intel i3 or AMD Ryzen 3 CPU (minimum) • 8GB RAM (minimum) • 240GB SSD (minimum) • Gigabit Ethernet (minimum) • Minimum of six USB 2.0 (or faster) ports, two front mounted in case • Permanent dust shield

Part 900 — Incidental Construction and Services August 2025

900-84SECTION 930 — PLANT FIELD LABORATORY

• Microsoft Access (latest version) 64 bit installed with full license • USB Standard 101 key keyboard with dust shield • USB Optical Mouse with mouse pad • 22” (minimum) 16:9 widescreen monitor, port compatible with computer, full HD

(1920x1080)resolution

• 600 VA (minimum) UPS backup power supply • Surge protector rated at 1000 Joules (minimum, separate from UPS) • Color laser printer with full set of cartridges, USB cable and letter-size paper • Broadband Internet access (10Mb/sec minimum nominal connection speed) Maintenance and Custodial Service. Provide the following maintenance and custodial services:

a.Maintenance. Properly maintain equipment and keep in working condition for all

production. R eplace supplies as needed to maintain the office, office equipment, and lavatory.

b.C ustodial Services . Provide the following:

● Weekly trash removal ● Weekly restroom cleaning ● Bi-weekly floor cleaning ● Bi-monthly window cleaning Although the laboratory is for the exclusive use of the Department during all production, other Quality Control testing may be performed at the facility on a temporary or intermittent basis. Ensure that t he laboratory and equipment remain clean and functional if such testing occurs before commencing production for the Department. Special Plant Field Laboratory Requirements for Asphalt Concrete Mixing Plants. In addition to the requirements of Sub sections 930.02 and 930.03.1 through 930.03.5, provide the following at the asphalt mixing plant:

a.Access. Provide access to the laboratory at least one hour before production begins.
b.Equipment and Supplies. The minimum quantities are:

● One automatic Marshall asphalt compactor complete with hammer assembly; 4 in., 10-lb drop hammer and counter, with automatic shutoff ● Four Marshall asphalt compaction molds complete with mold body, base plate, and collar (4 in. inside diameter)

Part 900 — Incidental Construction and Services August 2025

SECTION 930 — PLANT FIELD LABORATORY 900-85

● One Superpave Gyratory Compactor conforming to AASHTO T 312, complete with two molds and capable of recording and printing height measurements ● One Material Handling Chute to properly charge gyratory molds ● One assembly to perform theoretical maximum specific gravity tests according to AASHTO T 209. Provide a metal pycnometer, mechanical agitator and electronic digital vacuum gauge ● One sample splitter with ½-in. chute width and with 16 chutes ● One sample splitter with 2½-in. chute width and with 8 chutes ● One asphalt ignition oven capable of automatically determining the corrected asphalt content of a 3000-gram sample. Provide an oven that has an integral weighing system and printer capable of providing a hard copy of test results. Provide a suitable work area and adequate ventilation for the oven’ s exhaust. Provide t wo pairs of high- temperature resistant heavy -duty gloves, two sample trays , and a face shield that meets OSHA requirements as applicable. Provide an internal scale that conforms to Subsection 930.03.4. Perform all maintenance of the oven at intervals recommended by the manufacturer. ● One motor driven 12-in. sieve shaker, complete with belt driven mechanism to produce combination rocking and tapping action on each sieve, capacity for 6 full-height 12-in. sieves plus pan and cover; all parts mounted on a sturdy base (commonly known as a Mary Ann type shaker) ● One gravity drying oven of rugged construction with ⅜ in. thick insulated walls, minimum inside dimensions 18 in. wide, 14 in. deep, and 19 in. high, equipped with two expanded metal shelves, automatic thermostat and other controls, a glass thermometer reading 0° to 300°C by 1° divisions ● One set of US Standard 12-in. round intermediate height testing sieves, including sizes of 1″, ¾″, ½″, ⅜″, Nos. 4, 8, 16, 30, 50, 100, and two-200s with No. 14 mesh backing, with square openings, two pans and one cover ● One 12-in. round No. 200 wet wash sieve with 4-in. minimum depth ● One large utility sink complete with spray hose to perform wet washes according to AASHTO T 30. Ensure that the sink is separate from the restroom facilities ● Six drying pans approximately 10 in. ×14 in. × 2½ in. for use in the oven ● One digital scale 12,000 grams ±0.1 grams ● Two brass wire briquette brushes ● Two sieve or sash brushes ● Two approved dial type thermometers 50°F to 500°F

Part 900 — Incidental Construction and Services August 2025

900-86SECTION 930 — PLANT FIELD LABORATORY

● One approved two-burner electric hot plate, UL approved ● Two metal mixing bowls, 14 in. or greater diameter ● Sample splitting tool ● Two putty knives ● Five metal sampling buckets ● Dust masks ● Two pairs of suede work gloves ● Four approximately 20 in. × 40 in. towels ● An approved cleaning solvent for the equipment ● Two pairs of safety goggles and two pairs of gloves for high heat applications ● One Marshall core specific gravity apparatus. To include a 30-gal tank, overflow and drain valves, stainless steel core hanger, water heater and thermometer (0 °F to +160°F) accurate to 0.1°F ● One density tank for Marshall core specific gravity ● Two sampling spoons ● Two spatulas ● One long handle spade shovel ● A sampling rack with minimum dimensions of 4 ft × 4 ft located within sight distance of the plant laboratory to allow sampling of asphalt material from truck haulers Special Plant Field Laboratory Requirements for Cement Concrete Mixing Plants. In addition to the requirements above, provide the following at the concrete mixing plant:

a.Access. Access to the laboratory at least two hours before production begins
b.Equipment and Supplies. (Minimum quantities shown):

● One digital platform beam scale, capacity 45 kg (100 lb), sensitivity 5 grams (0.01 lb) ● One approved two burner electric hot plate, UL approved ● One gravity drying oven of rugged construction with ⅜ in. thick insulated walls, minimum inside dimensions to be 18 in. wide, 14 in. deep and 19 in. high, equipped

Part 900 — Incidental Construction and Services August 2025

SECTION 930 — PLANT FIELD LABORATORY 900-87

with two expanded metal shelves, automatic thermostat and other controls, a glass thermometer reading 0° to 300° C by 1° divisions ● One sieve shaker (samples less than 1 cu ft) with built-in timer or equivalent, consisting of eight changeable screens secured by a hydraulic clamping system; screens to be within US Standard tolerances and have openings as follows: 1″ , ¾″, ½″, ⅜″, No. 4, No. 8, No. 16, and pan. Ensure that t he unit is secured on a 1-ft concrete pad, enclosed, and covered and adequate ventilation is provided ● One motor driven portable sieve shaker for operation on 110 volt, 60- cycle single phase current, complete with a belt driven mechanism to produce combination rocking and tapping action, capacity for six full-height sieves plus pan and cover , all parts mounted on a sturdy base ● One set of brass frame US Standard testing sieves, all to be full height, 8 in. in diameter and matched for nesting; one each of the following: ¾″, ½″, ⅜″, Nos. 4, 8, 16, 30, 50, two No. 100s, and one No. 200 with No. 14 mesh backing, two pans and one cover ● Two fine, 2-in. sieve or sash brushes and two brass wire briquette brushes ● One set of 8 steel pans for drying soils, approximately 10 in. × 14 in. × 2 in. ● One complete air meter test outfit, ¼ cu ft (Ref. AASHTO T152 and ASTM C231) ● One complete slump test outfit (Ref. AASHTO T23 and T119) to include a steel pan with reinforced rims 24 in. × 24 in. × 3 in. ● One sample splitter with ½-in. chute width -16 chute ● One sample splitter with 2½-in. chute width - 8 chutes ● One digital scale 2000 grams ±0.1 gram ● One small concrete scoop (#1) ● Two dial thermometers (0°F to +160°F) ● Four plastic buckets, approximately 2.5-gal capacity ● One long handle spade shovel ● One steel brush, long handle ● Two putty knives ● Two pairs of suede work gloves ● One square steel trowel (6-in. length center handle) ● One plastic storage tote (10 -gal capacity, 24 in. × 16 in. × 8.75 in. minimum) or acceptable equivalent

Part 900 — Incidental Construction and Services August 2025

900-88SECTION 930 — PLANT FIELD LABORATORY

● One large concrete scoop (#2) ● One square shovel ● Table or bench to run air test and fabricate cylinders If the Contractor fails to provide any of the supplies or equipment described above, the Engineer may not accept any mixes or products dispatched from the subject site. Scales. Calibrate all laboratory scales for asphalt and cement concrete mixing plant testing equipment every six months.

930.04METHOD OF MEASUREMENT

Not applicable.

930.05BASIS OF PAYMENT

Provision of Plant Field Laboratory will not be paid for separately but will be considered a subsidiary obligation of the Contractor, with the costs distributed among the C ontract unit prices for items of work related to the field laboratory.

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Source: Standard Specifications for Road and Bridge Construction (Blue Book), 2022 (Aug 2025 compilation) Edition. Pages 688–695 of 951. View official source ↗

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