PRELIMINARY TESTS. Should the Order(s) establish the performance of tests prior to the execution of the Work(s) and/or Service(s), such tests shall be carried out, unless otherwise agreed, at the premises named by the Contractor, during ordinary working hours. Should the Order(s) fail to specify the technical requirements, the tests shall be carried out in accordance with general practice in the relevant industry.
PRELIMINARY TESTS. (i) Test specimens shall be prepared with at least two different water/cement ratios for each class of concrete, consistent with workability required for the nature of the work. The materials and proportions used in making preliminary tests shall be similar in all respects to those to be actually employed in the works as the object of these tests is to determine the properties of cement, aggregates and water necessary to produce concrete of required consistency and to give the specified strength. It will be Contractor's sole responsibility to carry out these tests and he shall therefore furnish to Engineer a statement of proportions proposed to be used for the various concrete mixes. For preliminary tests, the following procedure shall be followed:
PRELIMINARY TESTS. Because a dual-loop detector consists of two single loops (M and S), if a dual- loop detector functions well, the volume data collected by the dual-loop system should be consistent with the volumes collected by the two corresponding single loops. To check this consistency, ten dual-loop detectors were randomly chosen from I-5, I-90, I-405, and SR 520 freeways by the author to perform preliminary tests. Dual-loop volume data (T) and corresponding single-volume loop data (M and S) for a 60-minute period were compared to get general descriptive statistics for these dual-loop systems. As can be seen in Table 2, although the volume difference between each pair of individual M and S loop measurement was not significantly large, the volume difference between the single-loop measurements and the corresponding dual-loop measurement was considerable. Whereas in some cases the difference was small (3 percent or less), in many cases the discrepancies were serious (differences of 60 percent or more). Volume data collected by the dual loop systems were consistently lower than the corresponding volumes measured by the corresponding single loops. To check how accurately dual-loop detectors estimate vehicle lengths and distribute them into corresponding categories (bins), the Washington State Transportation Center (TRAC) performed some tests to compare dual-loop data and video data collected in the HOV Evaluation Project (Ishimaru, 2000). The comparisons indicated that the loop-based truck percentage consistently underestimated the truck percentage observed in the HOV study by degrees varying from 1 percent to 100 percent or more.
PRELIMINARY TESTS. Since a dual- loop detector consists of two single loops (M and S), if a dual- loop detector functions well, the volume data collected by the dual- loop system should be consistent with the volumes collected by the two corresponding single loops. To check this consistency, ten dual- loop detectors were randomly chosen from I-5, I-90, I-405, and SR 520 freeways by the author to perform preliminary tests. Dual- loop volume data (T) and corresponding single-volume loop data (M and S) for a 60- minute period were compared to get general descriptive statistics for these dual- loop systems. As can be seen in Table 2, although the volume difference between each pair of individual M and S loop measurement was not significantly large, the volume difference between the single- loop measurements and the corresponding dual- loop measurement was considerable. While in some cases the difference was small (3 percent or less), in many cases the discrepancies were serious (differences of 60 percent or more). Volume data collected by the dual loop systems were consistently lower than the corresponding volumes measured by the corresponding single loops.
PRELIMINARY TESTS. The materials and proportion used in main preliminary tests shall be similar in all respects to hose to be actually employed in the works as the object of this test is to determine proportion of cement, aggregates and water necessary to produce the concrete of consistency required to give the strength specified. It will be the contractor's sole responsibility to carry out these tests and he shall therefore furnish to the Engineer, statement of proportions proposed to be used for concrete mix. For preliminary tests, the following procedure shall be followed. Materials shall be brought to the room temperature and all materials shall be in a dry condition. The quantities of water, cement and aggregate for each batch shall be determined by weight to an accuracy of 1 Part in 1000.
PRELIMINARY TESTS. The various tests and procedures to be performed in connection with Check-out and Start-up, as set forth in the Test Procedures.
PRELIMINARY TESTS. Promptly upon execution of the Agreement, SIBIA will arrange at MEIJI's sole expense to have a third party contractor, to be selected by SIBIA and approved by MEIJI, [*] in accordance with mutually agreed protocols thereof. In the event that a [*]. MEIJI may, at its discretion, terminate this Agreement. [*]
PRELIMINARY TESTS. .1 Hydrostatically test each system at 200 psig for a 2 hour period with no leakage or reduction in pressure.
