Sentence examples for impervious materials from inspiring English sources

Earthfill dam, also called Earth Dam, or Embankment Dam, dam built up by compacting successive layers of earth, using the most impervious materials to form a core and placing more permeable substances on the upstream and downstream sides.

Green roofs, as opposed to ones made of tar or other impervious materials, absorb water and are a less expensive way to capture water than trying to control it through end-of-pipe storage tanks and the other engineered systems, like pumps and raised ventilation grates, that the transit authority is considering.

Lagging formed of jackets of porous materials such as glass wool and of impervious materials such as metal sheets are widely used to attenuate the sound radiated from pipes.

To solve the seepage problem of roller-compacted concrete (RCC) gravity dams, grout-enriched vibrated RCC (GEVR) and immersion vibrated RCC (IVRCC) have been widely used as the primary impervious materials.

Also, more developed planning zones, such as CBD district, where the lot coverage by impervious materials and buildings is higher than other planning zones, the relative importance of variables that explain the urban biophysical characteristics was found more significant than other socioeconomic variables (Fig. 4).

Ferguson says these materials use the same components and manufacturing processes as conventional impervious materials, "and as a general rule, carry the same health and environmental issues.... Same chemicals, same energy costs to manufacture, but far different benefits in its use".

We are trying to penetrate this impervious material so that the steps will rust".

Seepage has largely been controlled by lining main and distribution channels with impervious material, typically concrete.

An almost impervious material because of its firing, denseness, and glazing, it can carry highly corrosive waste materials that few other products can handle economically.

Therefore, using HIAC as the impervious material instead of GEVR facilitates simpler, faster and higher-quality construction.

As an alternative to the Rational method, the WFRP method may be appropriate for rural watershed areas in Korea, where paddy fields commonly exist, whereas the SCS model may be more suitable for urban areas, where most land surfaces are covered with impervious material.