How Did Cast Iron and Steel Affect Architecture in the Late

question 34

Essay

How did cast iron and steel affect architecture in the late 19ᵗʰ century?

---

Definitions:

OL Coils

In the context of electrical or control systems, this likely refers to "Overload Coils", which are part of overload protection devices in motors and other equipment to prevent overcurrent situations.

Contactor

A special-purpose relay designed to establish and interrupt the power flow of high-current electric circuits.

Heavy Power Loads

Electrical loads that consume a significant amount of power, typically found in industrial settings.

Overload Relay

A special-purpose relay designed so that its contacts transfer whenever its current exceeds a predetermined value. Overload relays are used with electric motors to prevent motor burnout due to mechanical overload.