31317915placingPT2026-03-30 20:25:37UF31317916concrete layingNDUF31317917concrete placingNDUF31317918concrete, pouringNDUF31317919concretingNDUF31317920laying concreteNDUF31317921placing, concreteNDUF31317922pouring concreteNDBT31304895placing processes and techniquesPTRT31374922cast-in-place concretePT