The retaining wall is holding level backfill, but if I need to design a 12ft maximum height (from top of footing to top of retaining wall), is there a limiting criteria on how height I can go with the masonry wall stem?.
I have a several culverts with sidewalks at the edge of them, grade difference varies between 3 to more than 10 feet, do I need to place pedestrian handrails following rails spacing as described on AASHTO Section 13.8 on all of them, or can I pace handrails with larger openings on some of the...
When a have a sidewalk at the edge of a bridge at what grade difference we need follow AASHTO Section 13.8 for pedestrian rail?, is it 2',3' or more than 4', where can I find this?
I have a steel pedestrian bridge that the contractor was not able to provide the required weld inspection reports and now the owner is asking me to provide specifications for non destructive testing of the welds before accepting the bridge. Do you know of any specifications that determine what...
On AASHTO 17th Ed Section 3.18.1.2 the code tells "When the direction of the stream force is other than normal to the exposed suface.....the effects of the directional components of stram flow pressure shall be investigated."
My question is: How do you define expose area, area perpendicular to...
Do the new stream force pressure Eq. 3.7.3.1-1 on AASHTO LRFD 4th Edition applied uniformely over the structure?, this will be different from the triangular distribution used on LFD AASHTO 17th Ed.
