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EEAT Engineering Monographs

Technical Knowledge Hub

Peer-reviewed engineering insights on New Zealand building standards, Auckland Council consenting frameworks, seismic design, and soil mechanics.

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

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

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

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

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

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