When writing a paper, each paragraph should include a topic  sentence and several supporting sentences. Start with the strongest  topic and make each of the following paragr â¦ aphs one of the weaker  points. End the paper with a strong conclusion, summing up the  paper. 2 people found this useful.
Typical costs: 1  Renting a power washer can cost anywhere from $40-$75 a day, depending on your location and the quality of the equipment. 2  Buying a basic residential pressure washer with an electric motor starts around $70-$200, depending on size and capacity.
3,000 to 3,500 PSI power wash systems are the standard equipment in the contract power washing industry. A big reason for this is that while there is not much of a price difference between 2,000 PSI and 3,000 PSI washers, there is a tremendous difference in cleaning power.hemicals. Water Pressure-PSI. Water pressure from the pressure washer is measured in pounds per square inch or PSI. This pressure is the amount of force delivered to the surface being cleaned, and is the critical factor in breaking debris from the surface being cleaned.