I work on a number of land development projects in local municipalities. Typically there is a municipal engineer (licensed P.E.) who must sign off on any plans on behalf of the municipality. He also can dictate or approve designs/changes to the plans for components in the municipal right-of-way...
I'm looking for a good explanation on why open structure drywells do not freeze during the winter.
I work in the northeast where typically it is assumed frost depth is around 4'. For stormwater infiltration basins we are required to install drywells (typically concrete drywell structures...
I am looking for information regarding a recent update to EPA Part 280 (Underground Storage Tanks). I was told that Part 280.418 changed the testing requirements for USTs without leak detection systems from yearly tests to monthly tests. This was a recent change, July or August of this year but...
I am designing a cantilever retaining wall using an equivalent soil lateral load of 35 psf per ft depth (instead of finding active earth pressure using coulombs method) Should equivalent soil lateral load be in lb/ft per foot depth to design? I'm not sure if i need to convert this or if the soil...
I am trying to figure out what the 'ws' variable is in the HSS Diaphragm Plate Connection Figure 12-22 on page 12-27 of the AISC Manual (13th Ed.) It doesn't seem to be defined anywhere else in the manual.
