How many rockets does a stone foundation take?

4 rockets, 2 C4 or 10 satchels. A sheet metal foundation takes 8 rockets and an armored one 15.

How much HP does a foundation have in Rust?

Twig 10, Wood 250, Stone 500, Sheet Metal 1,000, Armored 2,000 HP. The grade sets it, not the block type.

How much does it cost to upgrade a foundation?

Twig 50 Wood, Wood 200 Wood, Stone 300 Stones, Sheet Metal 200 Metal Fragments, Armored 25 High Quality Metal.

Rust Foundation

The base every structure sits on. Comes as a square or triangle; triangles cost about half a square to build and upgrade.

Foundation at every grade

Foundation

Grade	HP	Build cost	Rockets	C4	Cheapest, sulfur	Decay h
Twig	10	×50	1	1	×1 50	1
Wood	250	×200	2	1	×1Catapult×1 950	3
Stone	500	×300	4	2	×3Catapult×32 3,500	5
Sheet Metal	1,000	×200	8	4	×7Catapult×15 6,700	8
Armored	2,000	×25	15	8	×14Catapult×30 13,350	12

Triangle Foundation

Grade	HP	Build cost	Rockets	C4	Cheapest, sulfur	Decay h
Twig	10	×25	1	1	×1 50	1
Wood	250	×100	2	1	×1Catapult×1 950	3
Stone	500	×150	4	2	×3Catapult×32 3,500	5
Sheet Metal	1,000	×100	8	4	×7Catapult×15 6,700	8
Armored	2,000	×13	15	8	×14Catapult×30 13,350	12

HP and raid cost come from the grade, not the block type. Build cost depends on the shape: triangles cost half a square. Open a grade for its full raid table. Siege weapons such as the Catapult and Ballista can also breach walls.

Other blocks

Every building block

Raid Planner Building Blocks Building Tiers Deployables Upkeep Calculator Decay Timers Boom Budget

Rust foundation: common questions

How many rockets does a stone foundation take?: 4 rockets, 2 C4 or 10 satchels. A sheet metal foundation takes 8 rockets and an armored one 15.
How much HP does a foundation have in Rust?: Twig 10, Wood 250, Stone 500, Sheet Metal 1,000, Armored 2,000 HP. The grade sets it, not the block type.
How much does it cost to upgrade a foundation?: Twig 50 Wood, Wood 200 Wood, Stone 300 Stones, Sheet Metal 200 Metal Fragments, Armored 25 High Quality Metal.