Can anyone explain why the concrete water-cementitious ratio requirements for ACI 318, Table 4.3.1, Exposure Class S3 of 0.45, is different than ACI 201.2R, Table 6.3, Class 3 exposure with a w-c ratio 0.40? I tend to take the more conservative approach of ACI 201.2R, but may need to explain to...
Often times engineers include the weld requirements for joist bearing that are not consistent with the shop drawings submitted by the joist supplier. Should one go with the more stringent of the two, or do the structural engineer approved shop drawings supersede the plan details?
Greg
Read the full article here about an addition to an old classroom building in Fargo, North Dakota:
http://www.inforum.com/event/article/id/264023/
Could not have happened at a better time for nobody being there. During the design phase, I'm glad we didn't back down on the principles of...
We have a project where a building is supported by 9" pipe piles driven into highly plastic fat clays. The concern they are having is with the concrete being placed for the adjacent shallow foundation building. Does anyone know of any good references for vibration thresholds for newly placed...
