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from the same mix design and the same production facility is less than the specified minimum <br /> plus two standard deviations , the maximum production quantity represented by the LOT will <br /> return to 50 yd3 . In order to reinitiate reduced frequency, a new set of strength test results will be <br /> required . <br /> STRUCTURES FOUNDATIONS - PILING. <br /> (REV 11 -2240) ( 141 ) <br /> SUBARTICLE 455 - 5 . 12 . 1 (Pages 537 - 538 ) is deleted and the following substituted : <br /> 455-5 . 12 . 1 Description . Furnish test piles with Embedded Data Collectors <br /> (EDCs) installed in accordance with Design Standards , Index No . 20602 . Ensure the EDCs are <br /> I <br /> nstalled by the manufacturer ' s approved personnel . <br /> Notify the Engineer at least one day prior to driving the test piles . Do not <br /> drive test piles without the presence of the Engineer . Data from the EDCs will be collected by <br /> the Department in addition to the information collected in accordance with 455 - 5 . 13 . <br /> Drive piles of the same cross - section and type as the permanent piles <br /> shown in the plans , in order to determine any or all of the following : <br /> (a) the installation criteria for the piles . <br /> (b) the nature of the soil . <br /> (c) the lengths of permanent piles required for the work . <br /> (d) the driving resistance characteristics of the various soil strata . <br /> (e) the amount of work necessary to obtain minimum required pile <br /> penetration . <br /> (f) the ability of the driving system to do the work . <br /> (g) the need for point protection . <br /> Because test piles are exploratory in nature , drive thein harder (within the <br /> limits of practical refusal) , deeper, and to a greater bearing resistance than required for the <br /> permanent piling . Except for test piles which are to be statically (or Statnamically) load tested, <br /> drive test piles their full length or to practical refusal . Build up test piles which have been driven <br /> their full length and have developed only minimal required bearing, and proceed with further <br /> driving . <br /> As a minimum , unless otherwise directed by the Engineer, do not cease <br /> driving of test piles until obtaining the required bearing capacity continuously, where the blow <br /> count is increasing, for 10 feet unless reaching practical refusal first . For test piles which are to <br /> be statically (or Statnamically) load tested, ignore this minimum and drive these piles as <br /> anticipated for the production piles . <br /> When test piles attain practical refusal prior to attaining minimum <br /> penetration , perform all work necessary to attain minimum penetration and the required bearing . <br /> Where practical , use water jets to break the pile loose for further driving . Where jetting is <br /> impractical , extract the pile and install a Preformed Pile Hole through which driving will <br /> continue . The Department will consider the work of extracting the pile to be Unforeseeable <br /> Work . <br /> - 18 - <br /> FPID (S ) : 423186 - 1 - 58 - 01 <br />