Sampling Device Clause Samples

Sampling Device. 2 All secondary crushers and screening plants used in producing material must be equipped with

Sampling Device. ‌ 31 Developer shall ensure that all secondary crushers and screening plants used in producing 32 material is equipped with a mechanical sampling device or devices that either can be operated 33 from the ground or is accessible to the operator on a platform. 34 Developer shall ensure that the construction and operation of these devices move at a constant 35 rate across the full width of material and collect a representative sample of the falling column of 36 material from the discharge belt or chute while the plant is in operation. The sampling devices 37 must be substantially constructed so that a sample weighing up to 100 pounds can be taken. 38 The sampling devices must be equipped with necessary attachments to convey the samples to 39 the ground so that they can be safely and conveniently collected. 40 The sampling devices must be maintained in a satisfactory working condition so that samples 41 may be taken at any time, as required by ADOT.

Sampling Device. ‌ 8 Developer shall ensure that all secondary crushers and screening plants used in producing 9 material is equipped with a mechanical sampling device or devices that either can be operated 10 from the ground or is accessible to the operator on a platform. 11 Developer shall ensure that the construction and operation of these devices move at a constant 12 rate across the full width of material and collect a representative sample of the falling column of 13 material from the discharge belt or chute while the plant is in operation. The sampling devices 14 must be substantially constructed so that a sample weighing up to 100 pounds can be taken. 15 The sampling devices must be equipped with necessary attachments to convey the samples to 16 the ground so that they can be safely and conveniently collected. 17 The sampling devices must be maintained in a satisfactory working condition so that samples

Sampling Device. The sampling device to be used for obtaining undisturbed samples shall be a seamless, thin walled, metal tube meeting the requirements for thin walled tubes in AASHTO T207 "Thin-Walled Tube Sampling of Soils". The tube shall have a 16 or 18 gauge wall thickness, a minimum outside diameter of 3 inches, and a length of 30 inches. The tube shall be round and smooth without bumps, dents, or scratches and shall be clean and free from rust, dirt or corrosion. The end of the tube shall be machined into a cutting edge with an inside diameter that is 1/64 inch less than the inside diameter of the sampler tube. The top of the sampling tube shall be equipped with a coupling head with a check valve. Plastic materials too soft to be recovered by the thin wall sampler shall be sampled with a Stationary Piston Type Sampler or approved equivalent. Where the clayey soils are too stiff to be sampled with Shelby Tubes or a Piston Type Sampler, a ▇▇▇▇▇▇▇ sampler shall be used. Sampling Procedure Before an undisturbed sample is to be taken, the auger casing shall be cleaned out to the bottom by any means acceptable to the Engineer that provides a reasonably clean hole, and does not disturb the soil to be sampled. The water level in the hole shall be maintained at or above the ground water level during the entire sampling operation. The sampling tube shall be connected to the string of drill rods and lowered slowly to the bottom of the hole. The tube shall then be pushed into the soil at a uniform rate by a continuous motion, without impact or twisting, to the depth necessary to obtain an undisturbed sample of soil at least 24 inches in length. In no case shall the tube be pressed to a depth in excess of the space available in the tube to accommodate the sample plus any disturbed material that may not have been cleaned from the hole. To prevent distorting the upper portion of the sample by excessive pressure, particular care shall be taken to avoid a rate of penetration which exceeds the rate at which air or water can escape from the venting device at the top of the sampler. A maximum penetration rate of 1 inch per second will usually be satisfactory. Penetration shall be effected by hydraulic pressure approved by the Engineer. In no case shall the sampler be driven with a drop hammer. When a Stationary Piston-Type Sampler is used, the sampling procedure shall be as recommended by the manufacturer and approved by the Engineer. Typically, the casing is cleaned out and the sample...

Sampling Device. 8 AllDeveloper shall ensure that all secondary crushers and screening plants used in producing 9 material must beis equipped with a mechanical sampling device or devices that can either can 10 be operated from the ground or is accessible to the operator on a platform. 11 These devices must be constructed and operated so that theyDeveloper shall ensure that the 12 construction and operation of these devices move at a constant rate across the full width of 13 material and collect a representative sample of the falling column of material from the discharge 14 belt or chute while the plant is in operation. The sampling devices must be substantially 15 constructed so that a sample weighing up to 100 pounds can be taken. 16 The sampling devices must be equipped with necessary attachments to convey the samples to 17 the ground so that they can be safely and conveniently collected. 18 The sampling devices must be maintained in a satisfactory working condition so that samples 19 may be taken at any time, as required by ADOT.