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Ciry of Santa Ana <br />Coating, Painting and Structural Inspection Proposal <br />March 15, 2004 <br />(2) The coating is tested to determine it has sufficiently dried to <br />eliminate indentation of the probe into the coating, which <br />subtracts mils from the correct reading. If the coating does <br />deform, the testing will be postponed until the coating is firm <br />enough to prevent deformation by the gauge. <br />(3) Dry film thickness measurements will be taken on 3' centers <br />until it is determined deficient readings warrant more tests to <br />truly indicate the thickness of the area. Testing will be <br />performed as deemed necessary to accurately determine the <br />thickness, regardless of what the Contractor may say. If <br />widespread deficiencies are found, the Contractor will be <br />advised to determine if they prefer to proceed with testing after <br />additional material has been applied. <br />(4) After completion of the testing and after the Contractor has <br />recoated all of the deficient areas, tests on the recoated areas will <br />be repeated until the minimum dry film thickness is obtained. <br />b. HOLIDAY DETECTION: <br />(1) After completion of dry film thickness testing, all surfaces will <br />be holiday detected, utilizing the specified detector. <br />(2) The Tinker-Rasor AP or AP-W High Voltage Holiday Detector <br />power pack voltage will be set according to the voltage required <br />in the specification. <br />(3) Holiday detection and marking of defective areas will be <br />performed as noted above under "Dry Film Thickness Testing". <br />(4) All marked areas are then to be repaired and holiday detection <br />performed again. Re-detection and marking will continue until <br />the surface is holiday-free unless otherwise instructed by the <br />District or his Representative. <br />5. SURFACEPREPARATIONINSPECTION(EXTERIOR)-Physical inspection <br />of cleaned surfaces for compliance to specification, removal of dust, etc. <br />a. Weather conditions will be verified by use of an electronic or sling <br />psychrometer to determine suitability of climatic conditions prior to and <br />during all blast cleaning operations. <br />b. Surface will be observed throughout cleaning operations to detennine <br />Harper & Associates Engineering, Inc. <br />proposals~INSP-Santa Ana 9 <br />