The Horizontal Surfaces chapter is broken into 4 sections: Design Criteria, Related Materials, Pavement Systems, and Troubleshooting and Cautions. Abrasion resistance requirements for specific traffic volumes are defined. Bonded mortar, membrane separated mortar, pedestal, sand, and thin set installation methods are discussed in the Related Materials section. Flatness tolerances of substrates and finished units, as well as allowable lippage in finished work are defined. This section covers installations over concrete and woodframe floor systems, including heated floor systems. Maximum deflection recommendations for concrete and woodframe substrates are given. Abrasion resistance requirements for thresholds and stairs are defined. Eight pages of graphics are included with a variety of common details. This chapter is taken from the 2022 Dimension Stone Design Manual (DSDM).
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