About TAGAsoft
Engineering software built by engineers, for engineers.
TAGAsoft was founded in 1981 in Berkeley, California in response to client demand for practical geotechnical applications. Over the years, the TAGAsoft suite expanded to include a range of tools used by consultants and academics worldwide.
The name TAGA comes from Telegraph Avenue Geotechnical Associates — a nod to the first office location on Berkeley’s Telegraph Avenue.
Today, TAGAsoft is the trading name of TAGA Engineering Software Ltd, a New Zealand registered company, continuing the original vision: providing geotechnical engineers with software that is powerful, practical, and efficient.
Leadership
Dr Ian Brown, DEng (UC Berkeley) — Managing Director
New Zealand–based geological engineering consultant with 45+ years of experience, specialising in rock slope engineering, open-pit mining, and geotechnical software development. Dr Brown has also held senior management roles in publicly listed resource companies.
Our Focus
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Building software rooted in geotechnical expertise.
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Releasing reliable, fast tools that solve real-world engineering problems.
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Supporting engineers with flexible licencing, updates, & responsive support.
Learn More About Our Geotechnical Software
TAGAsoft has been supporting engineers and academics for over four decades with powerful, practical geotechnical tools.
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Explore TSLOPE features
- see what makes our slope stability software fast, reliable, and trusted worldwide.
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Read case studies
- discover how engineers and mining professionals apply TSLOPE in real-world projects.
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View licence options
- flexible plans for consultants, academics, and mining companies.
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Download TSLOPE
- try the latest version and get started with your own slope stability analyses.
Events and Book Reviews
Presentation Day at University of Auckland
I spent Tuesday at Presentation Day 2018, following up from our support of another couple of Dr Tam Larkin’s students using TSLOPE in their Part IV Research Project.  This year Ada Ng and Joseph Graham completed a study titled “Slope conditions resulting in a critical 3D Factor of Safety”. We congratulate them on completion of […]
Book Review – Rock Slope Engineering by Duncan Wyllie
Over the past couple of months I have been working my way through the new book authored by Duncan Wyllie, “Rock Slope Engineering Civil Applications Fifth Edition”.  The book format at 620 pages is readable on an aeroplane. However it should be on the desk of all engineers involved with rock slope engineering; it is […]
TAGAsoft at University of Auckland
I spent Saturday at Presentation Day 2017, where final year Civil and Environmental Engineering students (from a class of 240) presented their research findings undertaken as partial fulfillment for the requirements of the Bachelor of Engineering (Honours) degree. Â The students, who had worked in pairs, should be congratulated on the high standard of their work, […]
10th International Mining Geology Conference – Hobart, Tasmania
I’ve been showcasing TSLOPE—TAGAsoft’s 3D slope stability analysis program—with our partners Maptek at the 10th International Mining Geology Conference in Hobart, Tasmania. It was great to catch up with Bruce Hutchison of Hillgrove Resources after his presentation titled “Case study of the design and performance of open pit walls at the Kanmantoo Copper Mine” co-authored […]
Owhiro Bay Quarry Field Course – Engineering Geology, UAV Mapping & GSI
Last Tuesday I assisted Stuart Read (on left of image) and Fred Baynes who were leading a two day course on Principles and Practice of Engineering Geology for 26 members of the New Zealand Geotechnical Society. We spent the morning inspecting, and logging part of the lower slopes of the abandoned quarry at Owhiro Bay, […]
Wellington Ngauranga Gorge Rockfall – Greywacke Slope Failure and TSLOPE Analysis
Wellington, the capital city of New Zealand is located at the south end of North Island. The city was built around a sheltered harbour, however there is limited flat land and development has moved on to areas with challenging topography. Excavations are commonly required to accommodate housing, and infrastructure. As a result, we are interested […]
Kaikoura Earthquake Landslides – Review of NZSEE Bulletin Volume 50 No. 2
I have just received my copy of the New Zealand Society for Earthquake Engineering Bulletin volume 50, no. 2 (June 2017). It is a special issue on the 2016 Kaikoura earthquake that affected parts of both South and North Islands of New Zealand. I live near Wellington, and the shaking at my house at 12:02am […]
Review of Grant-Taylor’s 1964 Paper on Stable Angles in Wellington Greywacke
A colleague recently contacted me to see if I had a copy of a paper published in New Zealand Engineering in 1964. At the time of publication, I was a high school student, but the paper did come to my attention a few years later when I started my professional career. The author, Tom Grant-Taylor, […]
