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�y:'"'� STRUCTU :�AL DESIGN ASSOCIr,TES <br /> °� { � � � CONSULTING ENGINE�-i-:3 — — <br /> �r�o � reer� sc ; .v .s � .�r�.�..: . _., .._ . .. � <br /> � '�'E� '_ . , .., ...._ <br /> ���Y �5, 1973 <br /> h'.r. Howard idoore <br /> 4s29 Evergreen Way <br /> �verett, WA 98203 <br /> sub�ect: Concrete Retaining Wall a.ong Nortn side oP <br /> prcperty at 3316 Kroaer Avenue; Everett, '�1ash. <br /> To Whom This may concera; <br /> The undersigned, professional civil and structural engineer, <br /> redistered 'in the state of Washington, hereby certifies that <br /> he investigated sub,ject retaining wa.11, after a reac�y-mix <br /> concrete truck came too close to the newly constructed wzll <br /> and caused the stem to crack and an 8-inch disnlace�ent o��er <br /> z 2�-foot length a'_ong the upper edge of the ste^. <br /> T:-�e wall, however, is still capab3e of retainin„ �n-_ eart,i <br /> and a surcnarge load of 100 oounds per square foot if the <br /> vehicle loads ere restricted to 6,000 poun3s �ross, wnich <br /> s^:ou1d be posted at tne enterence. <br /> Resoectfl.illy sub:nitt�d, <br /> �1�UCTURAI. DESIGt1 ;�SSCCIAT�S <br /> o•� <br /> � <br /> � -- ' i � ' <br /> � �,. , l , l � _ � _ <br /> , r , ' �� f <br /> " �. ` .- <br /> C. D. Va.nden �nd�, P. c,. <br /> '.;ve:�sc <br /> � . . . > e . _ . . . _ . . <br />