Structural Engineering
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NZS 1170.5 Compliance
Seismic Design Principles in Auckland Under the NZ Building Code
An in-depth analysis of spectral acceleration, ductility factors (μ = 1.25 vs μ = 3.0), and moment frame drift limitations for residential structures on low-to-moderate seismicity North Island terrains.
Author: Jasen Kawana TAIAROA • DETAILED LIMITED
Civil Stormwater
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AUP Chapter E
Navigating Auckland SMAF-1 and SMAF-2 Stormwater Mitigation
Practical engineering sizing for rainwater reuse tanks, retention retention volumes, and orifice plate detention controls for multi-unit townhouse developments triggering impervious area thresholds.
Author: Civil Engineering Practice Group • Auckland HQ
Geotechnical Advisory
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NZS 4402 Soil Mechanics
Retaining Wall Stability & Surcharge Loads on Steep Coastal Slopes
Methods for calculating active Rankine earth pressures, water table hydrostatic effects, and ground anchor embedment depth in fractured Waitemata group sandstones and mudstones.
Author: Jasen Kawana TAIAROA • Saint Mary's Bay Base
Consenting Guide
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Building Act 2004
Producer Statements Explained: The Critical Roles of PS1, PS2, and PS4
A comprehensive developer's guide to engineering liability, ACENZ standard documentation, council peer review triggers, and construction sign-off requirements for CCC issuance.
Author: DETAILED LIMITED Compliance Division
Foundation Engineering
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Expansive Clays
Managing Expansive Soil Shrink-Swell (Class M / H) in Residential Foundations
Designing ribraft waffle pods and deepened edge beams to counteract cyclic seasonal moisture variations in Auckland volcanic and alluvial soil profiles.
Author: Geotechnical Engineering Team • NZBN 9429031710336
Subdivision Infrastructure
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RMA Section 224c
Overland Flow Paths (OLFP) & Floor Level Clearance Standards
Understanding freeboard margins (500mm for major flowpaths, 150mm for minor channels) and hydraulic routing required by territorial authorities during land division.
Author: Infrastructure Lead • Auckland Office