Two-piece fastener assembly for securing thermoplastic roof membranes to an underlying roof deck having: a batten bar coated with a thermoplastic coating on its top surface; a plurality of openings in the batten bar; and fasteners positioned in the plurality of openings for securing the batten bar and one thermoplastic roof membrane to the underlying roof deck. A first electrical conductor is wound around the body along at least a part of the closed circuit for at least one turn which forms a first main winding. The first slide contact portion includes a first surface being inclined so as to displace the moving unit toward the rack. A query and response component receives a query from a person having a social relationship with the user for requesting an evaluation about the estimatee, and responds with an associated evaluation result to the person having a social relationship with the user, via the sharing of social network information and the evaluations made by the other users about the estimatee. The preferred embodiment of the present invention includes a triggering device which causes the flame to appear more intense as the vehicle accelerates.