Precast concrete stairs, Class 2 finish (Specified by tread/riser dimensions)
Precast concrete stairs with Class 2 finish are factory-manufactured structural elements designed for indoor applications in Australian buildings. Class 2 represents high-quality architectural off-form concrete finish suitable for external and internal facades viewed in detail. These units offer exceptional durability, fire resistance (non-combustible), acoustic performance (STC 54-55 dB), and structural integrity. Manufactured to AS 3610.1:2018 standards with controlled quality processes ensuring consistent surface finish with minimal blowholes and colour variation acceptable for architectural applications.
- Commercial buildings and office complexes
- Multi-residential apartments and townhouses
- Educational facilities and universities
- Healthcare buildings and hospitals
- Hospitality venues and hotels
- Industrial facilities and warehouses
- Parking structures and garages
- Public buildings and civic centres
- Fire escape stairs (FRL 60-240 minutes)
- Main access stairways
- Complete stair flights (1-7 risers typical)
- Stair landings and intermediate platforms
Precast concrete stairs emerged in Australia during the 1960s construction boom, initially for industrial applications. The development of AS 3610 in 1995 (updated 2010, 2018) standardised finish classifications, with Class 2 becoming the architectural standard. Modern manufacturing uses steel moulds, controlled curing, and quality systems per AS 3850:2015. Victorian manufacturers like Hollowcore (established 1994) and Westkon pioneered local production capabilities. Recent innovations include low-carbon concrete options (ECOPact) achieving 30-70% carbon reduction, BIM integration for design coordination, and enhanced connection systems for seismic zones. The 2022 NCC updates strengthened fire testing requirements, making AS 1530.4:2014 mandatory for all new construction.
DISCLAIMER: This specification document is generated from the CLAD Materials Atlas Database. Information is for general guidance only and does not constitute professional engineering advice. Values are typical and may vary by batch, manufacturer, and production run. Verify suitability for specific project applications independently.