ensure maintenance is carried out by a competent person (someone who has the necessary skills, knowledge and experience to carry out the work safely) 1  maintain plant and equipment regularly â use the manufacturerâs maintenance instructions as a guide, particularly if there are safety-critical features.
HDPE (High Density Polyethylene). 3/4 HDPE will cost about $45.00 for 100' ($0.45/ft), so depending on the amount required can be much cheaper than the previous options. HDPE is used by many municipalities as water supply lines, so it has been tried and tested in underground applications.
There's little programming available in the format, and the technology will likely add hundreds of dollars to the cost of an HDTV, especially if you factor in the cost of 3-D glasses, which can run $200 to $300 a pair. Although 3-D at home may seem like a novelty now, don't count it out.