We have a hand cut, ground level flagstone patio under an existing second story wood deck. The flagstone was laid on limestone screenings and polymeric sand was used for the joints. Looked lovely until it rained
Experimental study on shear behavior of the interface between old and new deck slabs. Eng. Struct. 2016, 126, 278–291. [CrossRef] 4. Wu, J.; Liu, X.; Chew, S.H. Parametric study on cement-based soft-hard-soft (SHS) multi-layer composite pavement against blast load. Constr. Build...