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K-DTGCore Details

Stair Details

The one centimetre between a safe stair and a trip hazard.

Start chapter 1 freeEnrol in this course
280170900150+0.000FFL BAWAH+1.020ANAK TANGGA 6RAILING PIPA BAJA Ø48.6 T.2.8FINISH CAT DUCO, LAS DIGERINDATIANG PLAT 50×12 @2 ANAK TANGGABASE PLATE + DYNABOLT M10GRANIT T.10 + SPESI T.20(ANTREDE & OPTREDE)NOSING ALUMINIUM ANTI-SLIP40×7, LEM EPOXYPELAT TANGGA BETON T.150TULANGAN LIHAT GAMBAR STR.PLESTER + ACI + CATSOFFIT TANGGAILUSTRASI CONTOHBUKAN UNTUK KONSTRUKSI1K-DTGSTAIR DETAILSSKALA 1:20
Level
Beginner
Lessons
18
Time
1h 55m
Rating
4.8
Learners
14.4K
Updated
Oct 2026

After this course

What you'll be able to do yourself.

The stair is the detail most often miscalculated, and your feet know its rhythm by heart. This course teaches you to work out risers and treads from the finished floor, read concrete and steel stair sections, and detail nosings, handrails and guards.

  1. 1Explain why small differences between risers are dangerous.
  2. 2Work out the number of steps from finished floor to finished floor.
  3. 3Check a stair against the limits for riser, tread, landing and pitch.
  4. 4Draw a concrete stair section with finish, nosing and waist slab.
  5. 5Detail safe handrails and guards.

Good for

  • Drafters drawing stairs for houses and buildings.
  • Architecture students new to detailing.
  • Foremen and supervisors who check steps on site.

Best taken after

Full syllabus

Chapter by chapter, nothing hidden.

18 lessons, 1h 55m in total. Chapter 1 is open to everyone.

Chapter 1Tripping over a single stepFreeWhy your feet memorise a stair, and the numbers that protect them.6 lessons / 37 min
  1. Tripping over a single step5 min
  2. Stair words4 min
  3. The numbers that limit a stair5 min
  4. Work out the number of steps7 min
  5. Three centimetres at the top step6 min
  6. Chapter 1 test10 min
Chapter 2Count from the finished floorA stair is measured from the finished floor, not the concrete.6 lessons / 39 min
  1. Finished floors and waist slabs5 min
  2. Stack the concrete stair section6 min
  3. Work out the first step7 min
  4. Slide the stair parameters5 min
  5. The head-bumping underside6 min
  6. Chapter 2 test10 min
Chapter 3Handrails, nosings and steel stairsThe parts hands and feet touch, and stairs made of steel.6 lessons / 39 min
  1. Handrails, guards and nosings5 min
  2. Find the faults in the stair6 min
  3. Read the steel stair in 3D6 min
  4. Draw the stair section8 min
  5. Workshop and steel stair words4 min
  6. Chapter 3 test10 min

Lesson kinds

  • Concept
  • Glossary
  • Calculate
  • Site case
  • Chapter test
  • Layer Stack
  • Slide the Parameter
  • Spot the Fault
  • Read a model
  • Draw the detail

Get a feel for it

You practise, you don't just watch.

Try it: Slide the ParameterIllustration, not for construction
280170900150+0.000FFL BAWAH+1.020ANAK TANGGA 6RAILING PIPA BAJA Ø48.6 T.2.8FINISH CAT DUCO, LAS DIGERINDATIANG PLAT 50×12 @2 ANAK TANGGABASE PLATE + DYNABOLT M10GRANIT T.10 + SPESI T.20(ANTREDE & OPTREDE)NOSING ALUMINIUM ANTI-SLIP40×7, LEM EPOXYPELAT TANGGA BETON T.150TULANGAN LIHAT GAMBAR STR.PLESTER + ACI + CATSOFFIT TANGGA

Slide the value. The drawing follows, just like in the lessons.

2R + T = 620 mm. Within a comfortable stride of 600 to 650 mm.

Illustration, not for construction

Your creator

Taught by someone who still does the work.

Your creator

Yudha Pranaja

Senior drafter

A practitioner who teaches from their everyday work.

Courses
4
Learners
74.6K

Other courses

About becoming a creator

Learner reviews

From people who took it.

4.8out of 5

1.3K reviews

  • 581%
  • 414%
  • 34%
  • 21%
  • 10%

  • Bagas Wicaksono

    Junior quantity surveyor

    Layer Stack made the waterproofing build-up stick in my head. It lands better than watching a video.

  • Salsa Rahmadani

    Junior drafter

    I once got a complaint about a leak in a second-floor toilet. Now I know which point to check first.

  • Rizal Maulana

    Site supervisor

    The parapet detail is simple but right on target. My senior asked where I learned it.

Questions that come up

About this course.

All questions

01

What can I try for free?

All of chapter 1, "Tripping over a single step": 6 lessons, about 37 min. No card needed. If it isn't for you, stop there.

02

What should I know before starting?

It helps to have finished Reading Working Drawings from Zero first. It isn't locked, but the chapters assume you know that material.

03

Subscribe or buy this course?

Pro is Rp149.000 a month and opens every course, track, exam and certificate. Buying this course is Rp229.000 once and it stays yours. If you plan to take more than two courses, Pro usually comes out cheaper.

04

Do I get a certificate?

Certificates come from track exams, not single courses. This course counts toward Core Details, Studio-Ready Drafter. The exam runs 60 minutes and you pass at 75 percent.

05

Can I use these drawings on a project?

No. Every drawing in the course is an illustration for learning, not for construction. Use them to understand the logic, then follow your firm's standard and your engineer's drawings.

Part of

This course counts toward these tracks.

Where next

Courses people often take next.

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K-DTGStart with chapter 1

Stair Details free.

No card needed. If it suits you, go on with Pro or buy this course.

Start chapter 1 freeSee plans, Rp149.000