Search results for query: *

What is the best way to model a building on piers with the finished floor lower than the floodplain?

Yes, there is an undersized notch (see photo). But my question is not about the notch.

Yup. Limestone, central Texas. I want to keep the dam, but attach an apron w/ water-tight seal. Any ideas?

What would be appropriate method to apply a waterproof seal between the apron edge and the stone wall? See attached photo at previous email.

The dam was constructed on large boulders and is intended to create a permanent aesthetics pond. Currently the dam does not hold water. Water seeps below the mortared stone base. I could add an apron and cutoff wall at upstream end, but need to prevent water from seeping between the apron and...

Is it practical to attach the apron to the existing (`20 year old) wall (mortared limestone blocks), and how would that be done to form a watertight seal?

A stone dam approx. 30 ft long and 4 feet tall has water seeping below the stone at each end. Scouring indicates stormwater flows over the top at both ends causing loss of soil at the downstream base of the dam causing weak points for water to undermine the dam. Assuming the side erosion caused...

I have a HECRas model with a 400ft-wide floodplain and closely spaced cross-sections in a localized area where modifications are proposed. The right overbank includes an area raised by fill and with buildings which force 60% of the overbank flows into the (efficient bedrock) channel. An...

That may provide a reasonable comfort level, but would not necessarily account for all the things that are going on in the model. I would prefer to see documentation.

When using obstructions in HECRas modeling, do obstructions entered on adjacent cross-sections extend between the sections, or do the obstructions only apply at the cross-section location? It seems obvious that obstructions (on adjacent sections)that are not in-line with each other would not...

The house is to be higher than the base flood. Only the piers will be in flow area. I'm mainly wanting to know if anyone has a reference that indicates whether obstructions set in adjacent cross-sections are interpolated between the sections. In this case, does HECRas see adjacent piers as a...

Several rows of circular columns support a house above the base flood within the overbank of a large river. I have established cross-sections through each set of piers, and include natural sections just upstream and downstream of the piers. Each pier is modeled as an obstruction. My question...