In grade 5, students determined the meaning of general academic and domain-specific words and phrases related to grade level subject matter. In grade 6, they also determine figurative, connotative, and technical meanings of words and phrases. In grade 7, they will continue to do the same, and they. will also analyze the impact of a specific word choice on meaning and tone.
Written by Anne Reagan. May 13, 2014. Polybutylene piping is a form of plastic resin and was commonly used for plumbing U.S. homes built between 1978 and 1995. Due to its inexpensive production cost and ability to withstand high water pressure, it was widely seen as a better, cheaper alternative to copper plumbing.
The polybutylene was used for the water softener upgrade and was only found in this one area as it spliced the added water softener into the original plumbing system. PEX-The white pipe is white plastic PEX. Pex comes in white, blue, orange, red, and even a more translucent milky white clear.e usually think of polybutylene pipe as being plastic and gray in color. It does come in some other colors, such as blue, white, and black. Look at the photo to the right. It shows four different pipes above a water heater.