Glossary

Select the initial that begins the term you wish to read about.

A   B   C   D   E   F   G   H   I   L   M   N   O   P   Q   R   S   T   U   V   W   Z  

Glossary terms for letter: I

Impact Loads:

Loads induced by the collision of solidobjects on a structure carried by floodwater.Debris can include trees, lumber, displaced sectionsof structures, tanks, runaway boats, and chunks ofice. Debris impact loads are difficult to predictaccurately, yet reasonable allowances must bemade for them in the design of potentially affectedstructures.

Impermeable:

Not permitting passage of water.

Infiltration:

The flow of fluid into a substancethrough pores or small openings. The word iscommonly used to denote the flow of water intosoil.

Inflatable Rubber Gate:

Inflatable rubber dams are rubberized fabric tubes which are anchored to a sill and inflated to form a dam. These dams are limited to very low-head project usage, are subject to puncturing and vandalism, and are not recommended for major projects.

I-type flood walls:

A special case of a cantilevered wall consisting of sheet piling in the embedded depth and a monolithic concrete wall in the exposed height. A cantilever wall is a wall that derives its support solely through interaction with the surrounding soil. I-walls used as floodwalls may be located on existing grade, used as a retaining wall as well as a floodwall, or used to enlarge levees.