On a recent project, our Contract Office was asking questions about the design of an MSEW. One of my co-workers pointed out that they used to vary the reinforcement length along the height of MSEW to reduce backfill quantities. I know that AASHTO code does not allow this, but I don't have any...
I am analyzing an HSS Round section to determine combined stresses for evaluation of fatigue. The AASHTO Standards for Signs, Luminaires, and Signals 2009 is the governing code.
In several of the critical location the section experiences bending (multiple axes), axial compression, and shear...
I am the geotechnical designer for a county bridge replacement over a canal. Spread footings are to be placed within the dense embankment fill. The subsurface profile is attached.
The canal flows seasonally and the subsurface exploration took place approximately two weeks after the canal went...
I have been asked to evaluate the feasibility of the attached retaining wall section for a DOT highway project. The wall will be retaining earth above a highway and will be supporting traffic (i.e. business parking lots).
Sliding is the controlling scenario. Frictional resistance is minimal...
I have been asked to evaluate the feasibility of the attached retaining wall section for a DOT highway project. The wall will be retaining earth above a highway and will be supporting traffic (i.e. business parking lots).
Sliding is the controlling scenario. Frictional resistance is minimal...
I am working on a foundation for a bridge over the interstate that requires the use of pile foundations through MSE walls that are approximately 30 feet in height. The structural design engineer in our unit is concerned about how the unbraced length of the pile will effect the axial capacity of...
I am working on a foundation for a bridge over the interstate that requires the use of pile foundations through MSE walls that are approximately 30 feet in height. The structural design engineer in our unit is concerned about how the unbraced length of the pile will effect the axial capacity of...
I am working through my first spread footing design and have prepared a spread footing design chart, which plots the strength limit state curve and various settlement curves on a graph (factored net bearing resistance against footing width). The beauty of this graph is that to the left of the...
