Q1. Is my soil suitable for foundation screws?

FS XXXX-F screws are suitable for compact, earthy soils and slightly stony soil.

FS 550-F and FS 550 Rock screws are suitable for hard and very hard soil with a stone content greater than 50%.

The FS 1120 FL screw is designed for sandy soil and earthy soil with a very low stone content.

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