Basic Elements of CPF Systems
The basic elements of CPF systems are:
- A filter - to allow the passage of water and air away from the fresh concrete but retain cement and other fine solids.
- A drain - which transfers air and water from the filter to outside the formwork.
- A structural support - this is the formwork which supports the filter and drainage elements and also maintains the required formwork profile and resists the concrete pressure, commonly plywood/structural timber.
Read more about this topic: Controlled Permeability Formwork
Famous quotes containing the words basic, elements and/or systems:
“It is a strange fact that freedom and equality, the two basic ideas of democracy, are to some extent contradictory. Logically considered, freedom and equality are mutually exclusive, just as society and the individual are mutually exclusive.”
—Thomas Mann (1875–1955)
“Our institutions have a potent digestion, and may in time convert and assimilate to good all elements thrown in, however originally alien.”
—Herman Melville (1819–1891)
“What is most original in a man’s nature is often that which is most desperate. Thus new systems are forced on the world by men who simply cannot bear the pain of living with what is. Creators care nothing for their systems except that they be unique. If Hitler had been born in Nazi Germany he wouldn’t have been content to enjoy the atmosphere.”
—Leonard Cohen (b. 1934)