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,— <br />�'i . � �► <br />s ♦ <br />INC. <br />Welding • Testing • Training <br />16600 N.E. 77th • REDMONU, WA 98052 •(206) 885•5101 <br />ilovember S, 1981 <br />l�u'• Ken Callahan <br />City of Everett Building Department <br />�002 Wetmore <br />:,veret�, WA. 98021 <br />Re: i'leld Evaluation of Seaprop Industrial Project <br />Dear Nr. Calla'�an, <br />D::ring ny inspection of the welding at the job site, on Thursday, <br />Ociober 29, 1981, I noted the �ollowing problems; <br />Ptie A-615 rebar, steel pipe columns and saddles that have Ueen <br />weided need some minor repair, in respect to undercut, porosity, <br />lack of fusion and required weld profile according to U.E,C. re- <br />quirements. The most harmfull prob.lem noted was tlze notch effect <br />c2used by undercut and improper fill to correct weld size. <br />It is my recommendation that the problems mentioned above Ue re- <br />nai:ed to insure the structural integrity of the building. <br />:�ecommended to the parties involved that they are required to <br />w:ite and qualify two ��relding procedures covering the weldments <br />:;volved. The first covering the preheat and interpass temper- <br />2tures as prescribed in A.l9.S. Dl.1F. Tl�e other covering the weld- <br />in� that was done prior to the portion that has been done by Mr. <br />^ed idaddy using the pr.oper methods. Since my evaluation, the pro- <br />cedures have been written and tested. <br />ihe proper procedure for the above repairs is procedure �}WP-01. <br />^�is procedure is specially designed for the conditions described <br />ne^ein. Procedure �{WP-02 was written and tested to demonstrate <br />'te fact that the welds have good strength characteristics even <br />thou;h the proper steps vrere not taken. <br />��n�evity of inservice life of the weldments can not be insured <br />�;-.less the proper steps have been talten. I have Ueen told that <br />;.;�e engincering of the buildin� surpasses the welc:;�ents involved. <br />i a;n not able to bestify to the engineering aspects, only the <br />�reidments i�ivolved. <br />� <br />r�� your information, I vrould like to explain the effect to high � <br />;,::bon steels, such as rebar, wilen prop�r preheat and interpass <br />.`,;�De,atures are not maintained. When the steel is heated by <br />��.,l�i;zg the carbon in the heat affected o� is����s� red away <br />a���:� ..�a,�a. <br />� f-� _ <br />J <br />