scrophulariaceae: a family of dicotyledonous plants of the order Polemoniales; includes figwort and snapdragon and foxglove and toadflax and speedwell and mullein; in some classifications placed in the order Scrophulariales
asterid dicot family: family of more or less advanced dicotyledonous herbs and some trees and shrubs
dead load: a constant load on a structure (e.g. a bridge) due to the weight of the supported structure itself