1. TECHNOLOGY AND ENGINERRING
SKILL DEPARTEMEN PROGRAM : BUILDING TECHNOLOGY
SKILL COMPETENCE : DRAWING BUILDING TECHNOLOGY

2. Drawing stair construction
BASIC COMPETENCY
To describe the stair construction
To design the stair cnstruction
To draw the concrete stair construction
To draw the reinforcement of concrete stair
To draw the stair construction and wood railling
To draw stair construction and steel railling
To describe kinds of stair construction
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3. Menggambar Konstruksi Tangga Drawing stair construction
A. Description of stair construction
A stair has an important role in the past time. It could make someone more prestige. Recently stairs are not luxurious things. Someone make a stair because of having no enough land to make a house.
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4. Drawing a staur construction Drawing stair construction
Stairs should have to the following requirement :
It is set in the reachable location and everybodi can pass it.
It has enough light that come into the house
Easy to do
It is very simple and comfortable to have.
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5. Drawing stair construction
The stair has function to connect the first floor and the others
The corner of the stair that very easy to pass has resemblance about 40. If it has resemblance more than 45, it will be dangerous when the walkers down stair.
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6. Drawing stair construction
In order that the stair comfortable, the size of off-tread and on-tread have to be in balance.
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7. Drawing stair construction
B. Designing Stair Construction
To design the concrete stair, should be started from planning a map and setting the stairs. The reinforce of the stairs can be abtained
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8. Drawing stair construction
Consideration
The reach of adult people about cm
based on the research, when someone tread his foot in vertical for certain tall is needed twice when he/she wants to up-stair or down stair
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9. Drawing stair construction
Example:
A flat building with high floor 3,50 m optrade stair is vertically (optrade) is estimated 18 cm.
So the amount of optrade = 350 : 18 = 18, 4 pieces becomes = 19 pieces so its optrade becomes = 350 : 19 = 18,4 cm. This measerement must be searched well to become milimeter measurement.
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10. Drawing stair construction
According to opstrade formula :
- 1 aantrade + 2 optrade = 57 – 60 cm
The width aantrade (57 a’ 60 ) – 2 x 18,4 = 20, 2 a’ 23,2 cm in this measurement become about 20 dan 23 cm. (symlified)
1 aantread + 2 optread = 57 – 60 cm
The width is (57 a’60)
A possible stair is likely passed by :
– Passed 1 person is ± 80 cm wide
– Passed 2 person is ± 120 cm wide
– Passed 3 person is ± 160 cm wide
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11. Menggambar Konstruksi Tangga Menggambar Konstruksi Tangga
The formula of making srair:
1 An antrade + 2 Optrade = 57 to 60 cm
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12. Drawing stair construction
He step of calculating stair :
To define the burden of stair plats
To coumt the burden of stair
To count moment of stair plat
To define the material of plat board
To count the burden of plat board
To count the reinforce of stair plat and plat boarder
To count the control of defence
To count the control of movable
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13. Drawing stair construction
C. Drawing stair construction of concrete
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14. Drawing stair construction
Picture of concrete stair construction
Source: Guidance of practicing construction buiding, DPMK, Jakarta
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15. Menggambar Konstruksi Tangga Drawing stair construction
D. To draw the reenforce staur construction
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16. Drawing stair construction Drawing stair construction
Picture of construction of reinforcing stair
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17. Drawing stair construction
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18. Drawing stair construction
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19. Drawing stair construction
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20. Drawing stair construction
E. Drawing stair construction and wooden railling
stairs in the past time had an important roles that make someone more prestige. The material from wood is nearly used because such a material tends to be rarer and the prize will be more expensive.
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21. Drawing stair construction
Something has to get paying attention in making stair is :
– Quality of material
– Joining must be well
– Getting enough information
– Finishing
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22. Drawing stair construction
Stairs in detailed
Picture of Detail stair a
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23. Menggambar Konstruksi Tangga Drawing stair construction
Picture of Detail stair b
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24. Drawing stair construction
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25. Drawing stair construction
Picture of Detail stair c
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26. Drawing stair construction
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27. Drawing stair construction
Picture of Detail stair d
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28. Drawing stair construction
Picture of Detail stair e
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29. Drawing stair construction
F. Drawing The Construction Of Steel Stairs
Basically, the steel construction of stairs and those made of wood are the same, The difference is of the material. Steel staurs s are frequently used in the place that has strong trembling.
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30. Drawing stair construction
The type of profile for steel stairs are frequently linked to the head of stairs and then connected to knee of steel
To join the the head of the stairs and the stairs by using nail, scrambled object and electric power.
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31. Drawing stair construction
On construction with weld can be formed simply, because correlation of its construction is easy.
At stair opstrade uses wooden plank material of thickness about 3 cm or thin steel plate which is joined with woodwn material by using nuts and bolts which is joined with elbow steel. The lower edge is cut flatly and given place.
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32. Drawing stair construction
Picture of construction steel stair
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33. Drawing stair construction
Picture of stair trap with thin steel
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34. Drawing stair construction
G. Drawing forms of stair structure
Kinds of stairs:
Straaight stairs, the treads are vertical, straight on the thumb
Slanting stair, the stairs are the same in width
Wind-mill stairs, the treads are not the same in size, not vertical
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35. Drawing stair construction
Round stairs, the stairs are round following the holders
– Junktive stairs
– Board stairs
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36. Drawing stair construction
Kinds of Stair Forms
Picture of Bordes stair with two handles
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37. Drawing stair construction
Gambar. Tangga Bordes Tiga Lengan
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38. Drawing stair construction
Picture of Crossing two Stairs
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39. Drawing stair construction
Picture of crossing begginer stair
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40. Drawing stair construction
Picture
Stair with ending crossing
Source: Pictures of building science
Bridge, Yogyakarta
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41. Drawing stair construction
FINISH
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42. Menggambar Konstruksi Tangga
TERIMA KASIH
Compiled by : Rina D. Kania.S.Pd
SMK Negeri 2 Tasikmalaya
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