Standards for Architectural Cast Stone contains three standards and their commentaries:
TMS 404: Standard for Design of Architectural Cast Stone covers the design of cast stone systems and elements included in structures or assemblies. Among the subjects it covers are: definitions; contract documents; project drawings; design loads; material properties; strength and serviceability; analysis and design; section properties; reinforcement detailing; and quality assurance.
TMS 504: Standard for Fabrication of Architectural Cast Stone covers the fabrication of cast stone systems and elements. Among the subjects it covers are: ASTM standards; shop drawings; material properties; reinforcing steel; detailing; anchors; ties; corrosion protection; and delivery.
TMS 604: Standard Specification for Installation of Architectural Cast Stone covers the installation of cast stone systems and elements. Among the subjects it covers are: installation; construction; submittals; materials; mortars; masonry; quality assurance; inspection; and tolerances.
Key updates and revisions incorporated by the Committee include:
- Updates for coordination with other reference standards including updates to reflect changes in ASTM standards and reference to the 2022 edition of ASCE/SEI 7.
- General cleanup and clarification of provisions and expanded commentary.
- Introduced new deflection limits of l/600 for cast stone subjected to out-of-plane loads.
- Removed the historical drying shrinkage limit of 0.000325, replaced by a requirement that drying shrinkage be tested and reported.
- Minimum thickness requirement of 2.5 inches (64 mm) for all cast stone units.
- Permitting the use of glass fiber reinforced polymer bars meeting ASTM D7957/C7957M.
- Minimum qualifications for testing labs and inspection agencies are required to be defined.
These standards are written in such form that they may be adopted by reference in a legally adopted building code. The commentaries present background details, committee considerations, and research data used to develop the Standards. The Commentaries are not mandatory and are for information of the user only.
These standards and their associated commentaries were developed by The Masonry Society’s Cast Stone Committee.