POWER SWITCH TRANSISTOR-The part responsible for switching off the primary circuit that causes high voltage induction in the secondary winding in an electronic ignition system. PRIMARY SPEED SENSOR-An engine speed sensor located inside the actuator housing on the back of the injection pump.
Costs for green roofs in the United States are estimated to average between $15 to $20 per square foot for all use types, i.e., high density residential, commercial, industrial etc.1 These costs include all aspects of green roof development, from the waterproofing membrane to soil substrate creation to planting.
Copper roofing is the most expensive option available. However, it also is considered the most durable metal roofing option. A 25-foot by 40-foot roof built with 20-ounce copper material will cost approximately $31,000 to install. However, the green patina that forms over the copper makes the roof both attractive and durable.