I'm designing anchors for a nonstructural component. These are stainless steel post-installed anchors to secure the component to the concrete floor or foundation. Stainless is required by the client, and these are in high-seismic areas.
ACI 318-08, section D.3.3.6, says that if you can't get...
I have a piece of mechanical equipment being anchored to concrete with Hilti post-installed anchors. The relevant codes are IBC 2012, ASCE 7-10, and ACI 318-11. I am in seismic design category D. I need to get the anchors to work per section D.3.3.4.3(d) and D.3.3.5.3(c), which states that...
When using Hilti Profis to size cast-in-place threaded rods, the program is using a value for minimum edge distance from the base plate to the center of the hole equal to 1.5 times the hole diameter. They're using a hole diameter equal to the anchor rod diameter plus 1/16". So for a 1"...
The design wind speeds on the ASCE 7 maps are for a 50-year recurrence interval. The commentary for ASCE 7-05 provides a table in the commentary with conversion factors to apply to your wind speed for different mean recurrence intervals. For example, if you want an MRI of 5 years, you multiply...
What do you do when bolt holes in a shear tab don't line up? (For those unfamiliar with the term, a shear tab is a plate welded to the supporting member and bolted to the web of the supported member.) Sometimes, due to fabrication or erection issues, the holes in the shear tab don't line up...
The front page story in today's Dallas Morning News has some great illustrations. Unfortunately, they do not show up on the web version.
http://www.dallasnews.com/sharedcontent/dws/news/nation/stories/DN-cowboyscollapse_07pro.ART.State.Edition2.4bc8e5c.html
I wonder if anybody can help me determine how much elongation you get from a wire rope under an applied load. I downloaded the USS Wire Rope Engineering Hand Book from SlideRuleEra's web site (http://www.slideruleera.net/USSWireRopeEngrHandBook.zip - Thanks for hosting it). It has some...
The 2003 IBC has tables for nominal shear values for light-gauge steel framed walls with plywood or gypsum sheathing, but it doesn't have similar tables for roof diaphragms. I have plywood deck over cold-formed steel joists, but I can't find any load tables (or any direction at all) in the 2003...
