Knowledge hub
Expert knowledge for the construction phase.
What is owed in construction supervision (service phase 8 of the German HOAI, 'Leistungsphase 8'), how an acceptance inspection runs in a legally sound way and what belongs in the site diary — written for people who need it on the construction site tomorrow.
What will you find in the knowledge hub?
The knowledge hub gathers all Open Experience expert articles in one place: the guide to HOAI service phase 8 with the detailed articles on site supervision, formal acceptance under VOB (German construction contract procedures) and the site diary, honest comparisons with PlanRadar and Capmo, and the collected answers to frequently asked questions. All articles are written so that the answer comes first and the details afterwards — for people and for search engines alike.
The guide to HOAI service phase 8
The starting point: all duties of service phase 8 on one page — with jump links into the detailed articles.
Service phase 8 (HOAI) — the complete guide
Basic services, site-diary duty, acceptance, warranty, liability — answer first, details afterwards.
Read the guideSite supervision — duties, liability, checklist
What the site supervisor owes, which trades must be monitored closely and how to keep the proof.
Read the articlePractical guides
Two topics that, in a dispute, decide between evidence and assertion.
VOB acceptance — process, report, reservations
Types of acceptance, the seven steps of formal acceptance, the mandatory contents of the report and the deadlines that follow.
Read the articleSite diary — duty, contents, evidential value
What belongs in it, who keeps it, digital or paper — and the five most common mistakes.
Read the articleSoftware comparisons
Honest side-by-side comparisons with source and as-of date — including the question of when the competitor is the better choice.
Answers and dates
When the question is short — or you would rather see it live.
Frequently asked questions
Twenty answers on the platform, pricing, security and getting started — in one place.
Go to the questionsWebinars
Every two weeks, one product in real use — 45 minutes, free of charge, with time for your questions.
Go to the datesExpert forum
Research and practice at one table: eight conference volumes on the digital transformation of construction, ISSN 2512-8108.
Go to the forumIn preparation
These are the articles we are bringing into the knowledge hub next from our blog archive — revised, updated and with the answer first.
- The three stages of the digital construction siteDefect management, defect prevention, quality assurance — the maturity path in three articles, plus an overview piece.
- Legal certainty in constructionWhat documentation is worth in court — and where it regularly fails.
- Error prevention in constructionWhy inspecting before acceptance is cheaper than reworking afterwards.
- BIM for construction executionWhat actually arrives from the model in the construction phase — and how defects are located in the IFC model.
- The digital twin in constructionFrom model to living twin: 360° captures, time travel and target-actual comparison.
- Artificial intelligence in constructionAutomatic defect detection, on-site localization and progress recognition — state of the art instead of buzzword.
- The right strategy for software selectionStandard or custom development: how to tell which process deserves which solution.
- How to write an effective defect noticeForm, deadline, delivery — and the text modules that make a notice effective.
- Warranty periods, VOB versus BGBFour or five years, start, suspension, extension after defect rectification.
- 360° construction documentation in practiceHow a complete site-walk capture is created — and what it proves in a dispute.
Missing a topic? Write to us — we most enjoy writing about questions that are actually asked.
Frequently asked questions
Are the articles useful even without Open Experience software?
Yes. The guides first explain the professional situation — HOAI, VOB, BGB — and only then how a digital solution helps. You can read every article without using our software.
How up to date is the content?
The comparison pages carry an as-of date and are updated when prices or feature sets change. We review the professional guides whenever the underlying rules and regulations change.
May I quote from the articles?
Yes, with attribution and a link to the respective page. For press inquiries, please contact the management.
Where do I find the research results behind the products?
In the expert forum: the series "Digitale Transformation" (ISSN 2512-8108) documents the projects digiBau, ESKIMO and MAROON in eight conference volumes.
Questions an article doesn't answer?
45 minutes on your project — with people who know construction sites.