Concrete slab

Concrete Slab is a construction material used throughout the game, most notably as an ingredient in Construction Parts. It is also required for building several large structures and infrastructure pieces, making it an important mid- to late-game product for expanding industrial capacity and specialized facilities.

Concrete Slabs are used in the construction of the following buildings and machines:

• Smoke Stack (Large)
• Shipyard
• Rocket Launch Pad
• Spent Fuel Storage
• Retaining Wall
• Barrier
• Square
• Tomb of Captains

Because it appears in both general production chains and major construction projects, Concrete Slab is a material worth keeping in steady supply. Its demand can spike sharply when preparing large-scale upgrades or assembling advanced facilities, so planning production ahead of major expansion is useful.