We've been using mostly Allpile and to a lesser extent Lpile for lateral analysis piles and drilled shafts (caissons) for bridges, sign structures, high mast light towers, etc. embedded in various soil and rock layers. I've been tasked to look into alternative software that we could use instead...
We've had the issue come up a few times now where our seismic isolators are mis-aligned because the steel girders weren't at the base-line temperature when the girders were set and attached to the isolators. So, then they're deformed when they're not supposed to be, and have the potential to be...
Well, I got our the first response from our city building safety office on my proposed storage loft. (Ref: Floor live load for church storage loft Some items appear to be easily handled; others I could use some advice/guidance on to address them. I'll include the whole list of the "Response...
Per the railroad requirements, we spec out "splash boards" to keep snow, etc. from getting thrown off the edge of the bridge onto the railroad tracks by snow plows. These are aluminum panels along the safety fence. My google-fu is apparently weak today, and I'm having some trouble finding info...
At my church in Cheyenne, Wyoming, I'm designing stairs for access to a storage loft. I'm not sure what limits apply for step height and tread depth in this situation. We could control who has access to the stairs, if that makes a difference.
The storage loft area is approximately 200 sq. ft...
Gaoliao Bridge in Hualien County, Taiwan collapses from earthquake
Preliminary quake magnitude, depending on the source, was either a 6.4 or 6.8, or somewhere in between.
As I watched the video, there did not seem to be much reinforcing hanging out of the broken pier shafts.
Rod Smith, P.E...
Because of the some of the deaths associated with the Sunshine Skyway span collapse, I understood there were limits placed on the vertical curvature for bridges and approach roadways to ensure adequate sight distance. I can't seem to find what those limits would be, though. Were there limits put...
AASHTO has the following conditions for the use of methods other than Strut-and-Tie (STM) for deep components (Article 5.8.4.1):
1) The provisions of Article 5.8.2.6 specifying the amount and spacing of crack control reinforcement are met as a minimum;
2) A limit on usable shear capacity is...
We have a 980' long highway bridge to design in a high seismic region. We will be using seismic isolation bearings, so in addition to the regular longitudinal movements due to thermal expansion (nearly 7" total), the expansion joint will need to accommodate several inches of transverse...
We have a concrete parapet detail with a blockout where the detailing of the rebar would be greatly simplified if we could do a double bend to create a small offset or jog in the bars.
https://res.cloudinary.com/engineering-com/image/upload/v1561038826/tips/parapet_reinforcing_nvypct.pdf
Is...
Please forgive me if my terminology is off a bit. I have a cable approximately 120' long, composed of 4 wires that are stranded wire of either 8 or 10 gauge, which I would like to set up to carry 2 household 110V AC circuits. For reference, it has black, red, white and green, in a rubber outer...
Recently, here in Wyoming we've seen the price of SFMC almost double. Is this only a local phenomenon? If not, does anyone have insight as to why the price has spiked again?
We had a spike several years ago also. At the time, I ran into a ready-mix plant operator (at a Barnes&Noble of all...
