The structure is in the middle of construction, and the builders have found a layout problem:
A the top levels of a 3 story structure sit on a steel beam which is supported by a steel column. The builders have discovered that the walls above do not sit on top of the steel beam below. They would...
I am designing a steel beam that will have an impact load. After impact, the load will almost instantaneously go to zero. I was told that there is an allowable stress increase of 1.6 - 2.0 for these short duration loads. I cannot find anything that supports this increase. Ive looked through the...
This structure supports a waterslide and is wet a significant amount of the year. As you can see if you look closely at the pictures attached there are small cracks running perpendicular to the grain of the timber.
Based on this article, http://forestpathology.cfans.umn.edu/microbes.htm, and...
Is there an AISI book that has a table that specs allowable shear loads for the different stud gauges and sheathing thickness. I need lateral load resistance from structural sheathing nailed to light gauge steel studs but I cant find an allowable load table. I have the AISI CFS design manual...
Background:
We were hired to design the structure of a soil nail wall for a geotech company. They gave us all the of the loads and the anchor locations. The soil nail wall was designed per ACI as mentioned in the below threads and was to have a shotcrete temp facing and a concrete permanent...
Seems like a simple question but the loads that I am coming up with are huge! The structure is a simple cantilevered column that supports cables with fabric spanning between the cables.
Attached is a plan view of what is happening. On one side of the 60' span the columns are 18' and the...
I am designing a pin connection to take a large tensile load in a very small area.
I need the edge distance to be smaller than the AISC Section D5.2 requires. Ive gone up in metal grade and increased the depth but the edge distance is still not up to code. If the shear rupture/tensile...
There are two shear walls stacked on top of each other in a balloon framed wall, and I want to know what the min horizontal load i apply to the beam that runs in between the two s.w.s. Thanks.
I am designing a three-story house and there is a shear wall that sits over the garage so i have a discontinuous vertical irregularity. i am looking at an example in the Structural/Seismic Design Manual and they have a similar case and use an omega knot factor.
The uplifting force without the...
I am designing a plate that is fixed at both sides, the bottom, and free on the top.
I took this equation out of Rorkes Formulas for Stress and Strain--- sigma= -Beta*q*b^2/t^2--- where beta is dependent on the length of the plate divided by the heighth.
I found that the sigma max (flexural...
Its my first time designing a retaining wall and i cant seem to find equations for Ka and Kp. Im using this http://vlee.utpl.edu.ec/VLEE/LinkClick.aspx?fileticket=piymgNPD1d4%3D&tabid=142&mid=520 adobe file to do the design. It seems fairly simple, but they just seem to HAVE these constants...I...
