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 Modified bitumen roofs cost $3 to $6 per square foot installed. 2  Built-up roofing costs $3.50 to $7.00 per square foot installed. 3  Masonry roofs typically cost $2 to $4 per square foot installed, but can be slightly more expensive depending on the price of concrete at the time of installation. Masonry roofs typically cost $2 to $4 per square foot installed, but can be slightly more expensive depending on the price of concrete at the time of installation. 2  Flat metal roofs cost $5 to $15 per square foot installed.