General renovation small swimming pool of the municipality of Beuren. Structural engineering, § 51 HOAI iVM. Appendix 14, service phases 1-4.
Structural engineering, § 51 HOAI iVM. Appendix 14, service phases 1-4 (level 1). Client's option: Level 2 (service phases 5-6). No entitlement by the contractor to re-order according to level 1.