Laserfiche WebLink
along the inner circumference of the reinforcing cage . Notify the Engineer before excavating the <br /> shaft if the CSL access tube locations cannot be moved out of conflict with anchor bolt locations . <br /> SUBARTICLE 45547 . 6 . 1 . 1 (Page 573 ) is deleted and the following substituted : <br /> 45547. 6. 1 . 1 Equipment : Furnish Cross-Hole- Sonic logging test <br /> equipment as follows : <br /> 1 . Include ultrasonic transmitter and receiver probes for 1 . 5 inch <br /> I . D . pipe which produce measurements with consistent signal strength and arrival time in <br /> '" uniform, good quality concrete with all tube spacings on the project. <br /> 2 . Include a microprocessor based data acquisition system for <br /> display, storage , and transfer of data. Graphically display first pulse Arrival Time (FAT) during <br /> data acquisition . <br /> 3 . Electronically measure and record the relative position (depth) <br /> of the probes in the tubes with each CSL signal . <br /> 4 . Print the CSL logs for report presentation . <br /> 5 . Provide report quality plots of CSL measurements that identify <br /> each individual test . <br /> 6 . Electronically store each CSL log in digital format, with shaft <br /> identification, date , time and test details , including the transmitter and receiver gain . <br /> 460 STRUCTURAL STEEL AND MISCELLANEOUS METALS <br /> (REV 54840) (FA 6- 1 - 10) ( 1 - 11 ) <br /> LLL <br /> SUBARTICLE 460- 7 . 6 (Page 624) is deleted and the following substituted : <br /> 460-7 . 6 Tightening of Anchor Bolt/Rod Nuts : <br /> 460-7 . 6. 1 Fixed and Expansion Pot Bearing : Tighten anchor bolts or rod nuts to <br /> a snug tight ' condition such that the different mating surfaces (such as the top of concrete , <br /> neoprene and steel) are in firm contact . The nut or bolt is to be tight enough to develop friction <br /> 1. <br /> between surfaces to prevent sliding, but not over-tightened that bulging or damage occurs in any <br /> of the mating materials . <br /> 460-7. 6 . 2 Fixed and Expansion Bearings with Elastomeric Bearing Pads . <br /> Draw down the lower nut such that a total gap of 1 /2 inch exists between the nut and bearing <br /> plate . Tighten a second nut of the same specification to a snug tight condition against the lower <br /> nut maintaining the required gap . <br /> - 146 - <br /> FPID (S ) : 423186 - 1 - 58 - 01 <br />