Scaffold
Scaffold turns up in 2 fields: building, metallurgy. Here is what it means to the people in each one.
Scaffold in building
A temporary elevated framework used to support workers and materials during construction.
A temporary, modular structure built against or inside a building to provide safe access for trades working at height. Systems range from basic tube-and-clamp metal frames to suspended swing stages and rolling towers. Proper erection requires cross-bracing, secure base plates, and guardrails to prevent falls and structural collapse under the weight of crews and heavy materials.
"The masons need the scaffold bumped up another lift before they can finish the parapet."
Scaffold in metallurgy
A solid mass of fused material that forms a blockage inside a blast furnace.
A scaffold is an unwanted crust or bridge of semi-molten ore, slag, and coke that adheres to the refractory lining above the tuyeres. It disrupts the downward flow of the burden and the upward flow of reducing gases. If a scaffold grows too large, it can cause the furnace to hang and eventually slip, dropping a massive cold chunk into the hearth.
"The pressure drop across the stack tells me we're building a scaffold on the north wall."