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.
1 Expected to last 50 years or more, a synthetic slate roof is more lightweight and easier to install, and doesn't damage as easily if walked upon. 2  Installing a synthetic slate roof runs around $7-$9 or more a square foot, or about $11,900-$18,900 for an average ranch house with a 1,700-2,100 square foot roof. A 1,700-2,100 square foot roof might cost $17,000-$84,000, depending on the location, the quality of the slate and the complexity of the installation process.