November 11, 2025
Rainwater Tanks and BASIX: Integrating Roof Drainage in NSW
How to integrate BASIX rainwater tank commitments with roof drainage design on NSW new homes — connected roof area, overflows and certification.
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Updates from Contrive Consultants.
January 14, 2025
Charged Downpipe Systems to Rainwater Tanks: Rules That Pass
Design rules for charged (wet) downpipe systems feeding rainwater tanks — head, pipework, overflow and maintenance details that pass certification.
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July 16, 2024
OSD, Infiltration or Rainwater Retention: Which Suits Your Site?
OSD, infiltration or rainwater retention? How soil, slope, groundwater and your council's DCP decide the right stormwater strategy for Sydney sites.
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November 14, 2023
OSD + Rainwater Tanks: How Combined Systems Work in NSW
Combined detention/retention tanks can satisfy OSD and rainwater reuse in one structure. How they work and what NSW councils look for.
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