Civil Engineering

Roles: bridge, span, abutment, load, foundation, terrain, deck, support-structure

The design and construction of infrastructure that spans, supports, and connects across physical terrain — bridges, tunnels, dams, roads. As a source domain, civil engineering foregrounds the tension between two sides that must be connected without collapsing the independence of either. The bridge is the emblematic structure: it must bear load while spanning a gap, and its design is constrained by the terrain on both sides.

As Source Frame (1)