Section 511.503 - Contract clauses(a) Insert the clause at 552.211-12, Liquidated Damages-Construction, in solicitations and contracts for construction, other than cost-plus-fixed-fee, when the contracting officer determines that liquidated damages are appropriate (see FAR 11.501(a)).(b) Insert the clause at 552.211-13, Time Extensions, in solicitations and contracts for construction that includes the clause at 552.211-12. 86 FR 55518 , Oct. 6, 2021