ibsFlagship
Building Science / Beginner
Everyday Building Science
Why concrete gets watered, walls turn damp and flat roofs leak
Nara Wijayakusuma
- Lessons
- 27
- Time
- 2h 45m
- Rating
- 4.9
- Learners
- 38.4K
J-ILMSkill track
Building Science
Why buildings leak, heat up, crack and stay standing.
Courses
4
Lessons
80
Material
8h 22m
Pace
4 weeks at 20 minutes a day
Result
Building Science Certificate
Track route
From foundation to roof.
Every floor stands on the one before it. Its height matches the length of its course, so you can see which part is heaviest.
- Roof: track exam
Building Science Certificate
40 questions, 60 minutes, pass at 75 percent.
Start here
By the end you'll be able to
- 1Explain why concrete hardens by hydration and what suffers when curing is skipped
- 2Tell conduction, convection and radiation apart at the roof
- 3Follow the order of work for a damp wall without skipping steps
- 4Trace the load path from roof to ground
In this track
Courses in this track.
Chapter 1 of every course is free. With Pro, everything opens and your progress counts toward the track.
1
2
3
4
- ikl
Building Science / Beginner
Tropical Buildings: Heat, Wind and Rain
Keep a house cool and dry without guessing
Nara Wijayakusuma- Lessons
- 18
- Time
- 1h 56m
- Rating
- 4.8
- Learners
- 12.6K
- blp
Building Science / Intermediate
Leaks and Damp: Reading the Symptoms
Find where the water comes from before talking fixes
Sekar Anindita- Lessons
- 17
- Time
- 1h 50m
- Rating
- 4.7
- Learners
- 9.9K
- rum
Building Science / Beginner
Anatomy of a House from Footing to Roof
The name, job and order of every part of a house
Sekar Anindita- Lessons
- 18
- Time
- 1h 51m
- Rating
- 4.8
- Learners
- 14.9K
Exam and certificate
What you take home.
A numbered certificate in your name that you can download and share. It isn't a professional competency certificate, but it's proof you can show.
Time
60 minutes
Questions
40
Pass mark
75 percent
Retake
7 days later
- 1Work through every course in this track.
- 2Take the exam when you're ready, there's no timetable.
- 3Pass, and the certificate appears in your account.
AcademyCertificate of completion
Awarded to
Laras Kinanti
who passed the timed track exam and completed every course in
Building Science Certificate
Nara Wijayakusuma
Chief examiner
- Number
- DA-ILM-2026-04817
- Exam
- 40 questions, 60 min
- Score
- 86 / 100
- Date
- 14 October 2026
Questions that come up
About exams and certificates.
01What's the difference between a skill track and a career track?
A skill track covers one subject end to end, such as Core Details, and closes with an exam and a certificate. A career track pulls courses from several subjects in the order one role needs them, such as Studio-Ready Drafter.
02What is the track exam like?
40 questions in 60 minutes: multiple choice, calculations and reading drawings. You pass at 75 percent. The clock keeps running once you start, so set aside a quiet hour.
03What if I don't pass?
You can retake it after 7 days. Your results show which parts are weak, so use the time to redo those chapters.
04What does the certificate count as?
It's proof you passed a Detarva Academy track exam. It isn't a professional competency certificate or a licence to practise. Many people use it in their portfolio when applying, and how much it counts is up to the employer.
05Can I share it online or print it?
Yes. Each certificate has its own number and can be downloaded as a PDF or shared through a link.
J-ILMThe first floor is free
Start on floor one.
Chapter 1 of each course is open to you. Go on with Pro if it suits you.