What are your ideas and experiences on why the edges of saw cut contraction in a slab on grade are spalling off. My thought is the joints were cut too soon. The rest of the slab looks good but almost all the joints look like the attached picture.
What is the maximum distance a point load should be placed from the actual panel point of a joist and how much can that load be before supplemental struts need to be added? For example, is a load of 80 lbs 12" from a panel point to much without adding a strut if the joist has adequate shear and...
The Army Corps of Engineers has a manual with lots of info
http://www.usace.army.mil/publications/eng-manuals/em1110-2-2502/toc.htmhttp://www.usace.army.mil/publications/eng-manuals/em1110-2-2502/toc.htm
Regarding the L/600...check out "Deflection Limits for Wood Studs Backing Brick Veneer" by Harold Sprague in the Fall 2007 edition of Wood Design Focus.
