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.
Flat roofs are simpler than pitched roofs, but still provide a variety of roofing options. The cost to install or replace a flat roof depends on size of the home and the material used, but the average cost for a modified bitumen roof for a 1200 square foot home is $4800. Materials: there are three main types of flat roofs: Built-up roof is the traditional flat roof made of layers of tar and gravel.