for Highway Construction Page 566 of 71 5 SECTION 645 – FIELD LABORATORIES
645.01 Description.
Provide and maintain the specified class of field laboratory at an approved location for the Engineer’s exclusive use for this contract. If the Engineer, or consultant working under the Engineer’s direction, is responsible for damage to the field laboratory or its equipment beyond what is expected during normal use, the Engineer will reimburse the Contractor for the damage at a reasonable replacement or maintenance cost. The Contractor must demonstrate to the Engineer that the damage was beyond normal wear and t ear before the Engineer will reimburse the Contractor for damage.
1.Class I Field Laboratory – Aggregate and Soils.
2.Class II Field Laboratory – Aggregate, Soils, and Superpave HMA SP 2.
3.Class III Field La boratory – Aggregate, Soils, and Superpave HMA SP 3 and SP 5.
4.Class IV Field Laboratory – Superpave HMA SP 3 and SP 5.
645.02 Materials.
A.All Field Laboratories. Provide field laboratories meeting these requirements:
1.Certified in accordance with the Department’s laboratory qualification program.
2.Single trailer, 2 separate trailers, or onsite building.
3.Exterior door(s) meeting applicable requirements for egress. At least 1 door will have a nominal width measuring at least 36 inches.
4.Minimum of 3 exterior windows, not smaller than 3 feet by 3 feet.
5.Weather tight.
6.Lockable windows and doors.
7.Minimum ceiling height of 7 feet 6 inches.
8.Minimum total interior floor space of 192 square feet.
9.Meet all applicable federal and state safety codes.
10.Equipped with adequate ventilation, meeting all manufacturer’s recommendations for the evacuation of fumes created by heating or testing of hot mix asphalt .
11.Hardware necessary to allow the Engineer to secure the field laboratory with Department locks on all doors.
12.Provide electric heating and electric air conditioning, capable of maintaining a room temperature within 5° of 70° F continuously, with lights, furnaces, and ovens operati ng.
13.Steps of nonskid metal, with metal handrails and level landing platform secured to the field laboratory. Maintain and repair field laboratory and all equipment. for Highway Construction Page 567 of 71 5 Stage field laboratory trailers in a manner to reduce vibration and excessive movement. Additional measures may be required to promote a stable facility for ignition oven scales to perform properly (e.g., screw jacks, adjustable jack stands). Furnish the field laboratory with the following items or their approved equivalent:
1.Lighting and Electrical. Provide exterior and interior lighting with sufficient 115 and 220 VAC wall outlets to power all necessary test apparatus with at least 2 extra 115 VAC outlets.
2.Counter. Provide at least 66 unobstructed square feet of counter space measuring 24 to 30 inches wide. Metal clad counters are required for class II, III, and IV field laboratories. Round sharp edges. The counter must be equipped with a stainless steel sink, with minimum dimensions of 15 inches by 20 inches by 8 inches deep, and will i nclude a faucet, flexible hose type sprayer, and drain.
3.Furniture. Office desk and chair.
B.Class I Field La boratory – Aggregate and Soils.
1.Scales. One (1) electronic scale with digital readout sensitive to 0.1 grams and a minimum range of 25 kilograms. One ( 1) electronic scale with digital readout sensitive to 0.1 pound and 200 pound capacit y.
2.Quartering Canvas. One (1) vinyl coated canvas with an approximate size of 6 feet by 8 feet, one
1.with approximate size of 3 feet by 3 feet .
3.Mechanical Sieve Shaker. Permanently fixed to floor or with approved stabilized base, leveled, with a minimum tray size of 14 inches by 14 inches equipped with screens and pan.
4.Rocker Screen Set. Manual screen set, 1 foot by 1 foot with the following screens: 4 inch, 3 inch, 2 inch, ¾ inch, and No.4.
5.Sieve Shaker with Sound Enclosure. Motor driven shaker capable of handling 12 inch diameter, half height brass wire U.S. standard sieves. Sieves will meet ASTM E11 standards. S ieve sizes will be 1”, ¾”, ½”, ⅜", No. 4, No. 8, No. 16, No. 30, No. 50, No. 100, No. 200, and a pan with lid.
6.Deep Frame Wet Washing Sieves. A 12 inch diameter, half height No. 10, and full height No. 200 brass wire , or stainless steel sieve .
7.Laboratory Oven. One (1) oven with a minimum 7.5 cubic foot chamber with 2 or more shelves.
8.Hot Plate. A 2- burner electric or propane hot plate.
9.Sand Equivalent Shaker. Electrically operated with electronic timer.
10.Sample Splitters. One (1) adjustable sample splitter with adjustable chute width of ½ inch to 3 inches and 3 sample pans. One (1) fi xed width sample splitter with fixed chute width of 1 inch and 3 sample pans.
11.Microwave Oven. Microwave oven with a minimum chamber size 1.55 cubic feet and at least 900 watts with 3 microwave pans.
12.Safety Equipment. Fire extinguisher, first aid kit, eyewash kit, and other safety equipment required by law.
13.Miscellaneous Equipment. Additional equipment (e.g., oven mitts, brushes , water squeeze bottle, mixing spoons, disposable gloves) to perform the following tests: for Highway Construction Page 568 of 71 5 a. Idaho IT 72.
b.AASHTO T 99 Method C.
c.AASHTO T 180 Method D.
d.AASHTO T 176.
e.AASHTO T 27.
f.AASHTO T 11.
C.Class II Field Laboratory – Aggregate , Soils, and Superpave SP 2. Same as Class I F ield Laboratory plus the following:
1.Laboratory Oven. Add a second oven with a minimum 10 cubic foot chamber with 2 or more shelves.
2.NCAT Ignition Furnace. Including the equipment and personal protection gear necessary to perform AASHTO T 308 Method A internal balance and AASHTO T 30.
3.Specific Gravity Statio n. Including the necessary equipment and accessories to perform the AASHTO T 209 (bowl method) and AASHTO T 166 Method A.
4.Miscellaneous Equipment. Additional equipment (e.g., oven mitts, brushes , water squeeze bottle, mixing spoons) to perform the following tests:
a.Idaho IT 99.
b.AASHTO T 304.
c.ASTM D4791.
d.AASHTO T 329.
e.AASHTO R47.
D.Class III Field Laboratory – Aggregate , Soils, and Superpave SP 3 and SP 5. Same as Class II F ield Laboratory plus the following:
1.Scales. Two (2) (electronic), with digital readout, sensitive to 0.1 grams with a minimum range of 0 to 20,000 grams.
2.Gyratory Compactor. Pine Instrument Gyratory Compactor Models AFG1 or AFG2 (105- 125 VAC), 12 Amp 60 Hz., including manuals and software. Included with the gyratory compactor will be 2 molds and the equipment to perform AASHTO T 312.
3.Specific Gravity Station. Including the necessary equipment and accessories to perform the AASHTO T 209 (bowl method) and AASHTO T 166.
E.Class IV F ield Laboratory - Superpave SP 3 and SP 5. The Class IV Field L aboratory does not require aggregate or soils testi ng. Equip with the following:
1.Scales. Two (2) (electronic), with digital readout, sensitive to 0.1 grams with a minimum range of 0 to 20,000 grams.
2.Quartering Canvas. One (1) v inyl coated fabric with an approximate size of 4 feet by 4 f eet. for Highway Construction Page 569 of 71 5 3. Sieve Shaker with Sound Enclosure. Motor driven shaker capable of handling 12 inch diameter, half height brass wire U.S. Standard sieves. Sieves will meet ASTM E11. Sieve sizes will be 1”, ¾”, ½”, ⅜", No.4, No. 8, No. 16, No. 30, No. 5 0, No. 100, No. 200, and a pan with lid.
4.Deep Frame Wet Washing Sieves. A 12 inch diameter, half height No. 10, and full height No. 200 brass wire , or stainless steel sieve.
5.Laboratory Ovens. Two (2) ovens with minimum 10 cubic foot chambers with 2 or more shelves.
6.Gyratory Compactor. Pine Instrument Gyratory Compactor Models A FG1 or AFG2 (105- 125 VAC), 12 Amp 60 Hz., including manuals and software. Included with the gyratory compactor will be 2 molds and the equipment to perform AASHTO T 312.
7.NCAT Ignition Furnace. Including the equipment and personal protection gear necessary to perform AASHTO T 308 Method A internal balance and AASHTO T 30.
8.Specific Gravity Station. Including the necessary equipment and accessories to perform the AASHTO T 209 (bowl method) and AASHTO T 166.
9.Safety Equipment. Fire extinguisher, first aid kit, eyewash kit, and other safety equipment required by law.
10.Additional Equipment. Additional equipment to perform the following tests as necessary:
a.Idaho IT 99.
b.AASHTO T 27.
c.AASHTO T 11.
d.AASHTO T 304.
e.ASTM D 4791.
f.AASHTO T 329.
g.AASHTO R 47.
645.03 Const ruction Requirements.
The field laboratory will be clean and operational for at least 10 working days before the start of testing and will only terminate 14 working days after completion of paving, or as directed. Material requiring testi ng will not be accepted until the field laboratory is properly equipped, operational, and approved. Do not move the field laboratory without written approval. Provide and maintain an all -weather parking area for the field laboratory. Provide a parking area approximately 15 feet wide and 35 feet long, leveled across its length and width, cleared of vegetation and debris, and sloped to drain. Restore the impacted area upon completion of the work. Provide electrical service or electric generator installed by a licensed electrician. The electrical contractor must file for an electrical inspection permit with the Idaho Department of Labor and Industrial Services, and the field laboratory electrical service approved by a licensed electrical inspector before turning over to the Engineer. Provide the following:
1.Trash Containers. Provide appropriate trash containers with bags. Haul trash as necessary.
2.Water. Provide an adequate supply of potable water at all times for testing purposes. The water supply must be plumbed into the field laboratory sink and have sufficient pressure to wash for Highway Construction Page 570 of 71 5 samples. Control the discharge of waste water from the field laboratory in an approved manner. Waste water is not allowed to create muddy conditions around the field laboratory.
3.Portable Toilet. Provide a portable toilet for use by the field laboratory per sonnel. Ensure the portable toilet is serviced weekly.
4.Cleaning Equipment. Broom, dustpan, 5 gallon wet/dry vacuum, mop, and pail.
5.Printer. Provide 1 printer with toner and paper capable of connecting to a laptop computer via a USB port.
645.04 Method of Measurement.
The Engineer will measure acceptably completed work by the lump sum.
645.05 Basis of Payment .
The Department will pay for the accepted work as follows: Pay Item Pay Unit Class I Field Laboratory – Aggregate and Soils ...................................... LS Class II Field Laboratory – Aggregate, Soils, and Superpave SP 2 ........ LS Class III Field Labor atory – Aggregate, Soils, and Superpave SP 3 and SP 5 ........................................................................................ LS Class IV F ield Laboratory – Superpave SP 3 and SP 5 .......................... LS Furnishing, maintaining, and repairing the field laboratory, parking area, equipment, other costs related to the field laboratory’s operation, and restoration of the field laboratory site are i ncidental costs included in the contract unit price. Obtain electrical inspection permits at no additional cost to the Department. Costs associated with the field laboratory operation, including insurance and utilities, will be paid by the Contractor. for Highway Construction Page 571 of 715 SECTION 646-RESERVED
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 602–606 of 768.