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• <br /> WIN <br /> SUM INSIN <br /> MIMS <br /> MEM IIERM <br /> placed, the architectural finish must be removed and the surface cleaned or otherwise prepared before <br /> placing grout. <br /> DCI Response: <br /> 9a.See updated calculations, pages S-46 and S-47 for anchor calculations per ACI 530-13. <br /> 9b.See updated calculations pages S-46 and S-47, reductions for anchor spacing have been performed. <br /> 9c.Calculations account for bi-directional shear, but the modeling and design of the connections are such <br /> that there is no calculated tension in the connection to the face of the CMU parapet walls. <br /> 9d. For the connections to the parapet walls,the eccentricity is very minor(less than W)so the tension in <br /> the anchors created is very small,on the order of 500 pounds so this tension is ignored for the 4-bolt anchor <br /> group.The connection to the stair wall has been updated,a spacer plate has been added that is directly <br /> bolted to the CMU wall.This new plate maintains proper bolt spacing and edge distances which greatly <br /> improves this connection from its current condition. See updated detail 12/S3.1M and supplemental <br /> calculations sheets S-75 and S-76. <br /> Continuing with the previous comment, the following field conditions should be addressed: <br /> a. Detail 11/S3.1 M:The anchors installed at the parapets should be adhesive threaded rods. Based on <br /> observations, it is not clear if the anchors are adhesive or mechanical anchors. The installed condition <br /> should be verified. See Photo 5165 for an example. <br /> b. Detail 12/S3.1M: The detail and calculations do not indicate the minimal edge distance between the <br /> connection and the wall edge. See Photos 5159 and 5160. In addition, the installed condition has <br /> resulted in large spalls on the backside of the wall. Note that the plate washers are also <br /> missing. Documentation, including calculations, should be submitted that address these conditions and <br /> the reduced available capacities of the connection. <br /> DCI Response: <br /> 10a.The anchors to the parapet wall are threaded rod with adhesive.See report by Mayes Testing, <br /> attached. <br /> 10b. See response to comment 9d above.This connection has been modified. <br /> Sincerely, <br /> DCI Engineers <br /> )4skl -D <br /> Craig A. Stainer, P.E., S.E. <br /> Associate <br />