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

2. Drawing A Plan Of Reinforce Concrete Beam
BASIC COMPETENCE :
To draw master plan of beaming floor and its lay out setting.
Menggambar detail penulangan balok
To draw in detailed of beam boning system
Membuat daftar tulangan balok beton bertulang pada gambar.
To list some properties of making bone-structured beam
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3. Drawing A Plan Of Reinforce Concrete Beam
A. To describe bone-structured beam
The beam will get burden from the present plat that available on it. The burden on the beam brings about drawing, crowd and moving power.
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4. Drawing A Plan Of Reinforce Concrete Beam
A bone-structured beam is able to bear the above burden on the equal pole, so it will be powerless in bearing the draw from under the pole except it is provided by solid-structured bone of the concrete reinforce.
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5. Drawing A Plan Of Reinforce Concrete Beam
When bone-structured bar was under the beam, precisely at the outer surface of the draw, so the bearing power of the beam is not depended on the drawing power of the solid beam and it make the beam stronger in bearing such a burden.
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6. Drawing a Map of Concrete Reinforced reinforce
In order to get extra benefit from the system of bone-structured reinforce the concrete should be coated and put as closely as possible.
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7. Drawing a Map of Concrete Reinforced reinforce
Some criteria for beaming construction techniques
Concrete decking on the block minimally for construction :
Coating and beaming construction
– Di dalam (depth) : 2,0 cm
– Di luar (surface) : 2,5 cm
– Tidak kelihatan (thickness) : 3,0 cm
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8. Drawing A Plan Of Reinforce Concrete Beam
the reinforce concrete should be suitable with the necessity that is required by the concrete construction standards.
there is at least a bar of concrete structure along the beam.
the diameter of main concrete at least 12 mm.
the interval from the pole of concrete is not more than 15 cm and the real interval is 3 cm at the parts that bear maximal burden.
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9. Drawing A Plan Of Reinforce Concrete Beam
the requirements that define concrete reinforce
the width of main concrete reinforce
(at least 0.5 % (from the width of beaming a.b)
(the maximum interval 20 o of concrete reinforce)
(the maximum interval is 30 cm)
Begel :
Max width is 0,2 % (from the width a.X)
Jarak Begel :
x ≤ a
x ≤ 30 cm
x ≤ 25 Φ concrete construction of the begal
x ≤ ⅔ for movable area
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10. Drawing A Plan Of Reinforce Concrete Beam
On the T beam can be stuck the open begel if the following requirements are fulfiled
the edge of the begel should be modified by a circle hook and lean up position.
In bending a hook should be a long bar.
- the open side of the begel should be coverd by the concrete reinforce towards the floor in fit stright position on the beam.
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11. Drawing A Plan Of Reinforce Concrete Beam
Open Beugel
The advantage of using the open begel towards the concrete reinforce is to be able to make the processa of concrete reinforce faster.
The frame of concrete structure of reinforce have to be filled one by one.
If there is some net, it will make easer to fill the concrete reinforce ( it does not cut mes reinforcement). > = 150 mm. The reinforcement continues.
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12. Drawing A Plan Of Reinforce Concrete Beam
Avoid the reinforce setting in two levels for the importance of the main concrete reinforce.
If the interval of reinforce on the lower and higher side is 30 cm, so it should be set extra reinforce.
The extra extra reinforce (montage) for the tall beam, especially for those that have 90 cm or larger at least 10%. The width of main larger reinforce that have minimal 8 mm for the soft steel, 6 mm for hard steel.
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13. Drawing A Plan Of Reinforce Concrete Beam
If the movable power of the concrete works less than the movable power of concrete, the begel can be arranged based on the concrete under the interval less than 30 cm
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14. Drawing A Plan Of Reinforce Concrete Beam
If the movable power of the concrete works, there will be two things happen:
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15. Drawing A Plan Of Reinforce Concrete Beam
The movable power that works totally 100% can be depended by the resembled reinforcement according to justification in general.
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16. Drawing A Plan Of Reinforce Concrete Beam
If he movable can be depended by the scrambled concrete and the slanted position, 50 % of the burden is provided by resembled reinforcment
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17. Drawing A Plan Of Reinforce Concrete Beam
The length of connecting reinforcement to guidance reinforcement 100% must be continued minimally as long as 12 d ; h ; 1/16 l b (taken the longest), then 1/3 is continued as long as Ld, then it is continued ¼ as long as Ld (Ld = 1,4 Ld’) where Ld’ can be seen in thelist of distributing reinforce.
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18. Drawing A Plan Of Reinforce Concrete Beam
When there is connecting reinforce, so long of joining through it at :
For pressing reinforce, long of joining more than 40 d to 50 d in accord with concrete.
For pulling einforce, long of joining more than minimally 1.3 Ld (Ld – 1.4 Ld’ without hook. Supporting reinforce must be installed cymmetric, (lower supporting reinforce must be installed minimally the same with upper supporting reinforce).
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19. Drawing A Plan Of Reinforce Concrete Beam
Reinforcing Cantilever Block
Cantilever Block is a block which is one of its edge has clamping support and the other edge hungs freely. Cantilever block which suports heavy burden of gravitacy accepts negative moment to all of length of its block. Its result cantilever block reinforce is put at upper part or side withdraw.
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20. Drawing A Plan Of Reinforce Concrete Beam
For the stick like in this picture, maximum moment happened at the profil of its place. The result that most of big reinforce are needed at this point. Reinforcement is not only at support, it must be lengthened or anchorred on concrete at the outside support. This lengthening is called some of distributing (development length). Length of this distributing must not be stright like at the picture, because reinforce will be attached at 90° or 180°.
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21. Drawing A Plan Of Reinforce Concrete Beam
B. Designing a plan of reinforcement conrete beam
To design concrete beam is started from map planning, and plan of putting beam.
Beam reinforcement can be got after doing calculating of beam reinforcement.
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22. Drawing A Plan Of Reinforce Concrete Beam
Step of Bea Caculation:
Determining beam burden.
Calculating beam burden.
Calculating detail of beam moment
Calculating reinforcement beam
Calculating voltages control by pressing and pulling
Calculating voltages control by moving and rotating
Calculating Control placing reinforcement
Calculating detail beam internal moment.
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23. Drawing A Plan Of Reinforce Concrete Beam
C. Drawing A Plan of Reinforcement
Concrete Beam.
Example
Scheme Plan of Beaming Flor and
its placing
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24. Drawing A Plan Of Reinforce Concrete Beam
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28. Drawing A Plan Of Reinforce Concrete Beam
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29. Drawing A Plan Of Reinforce Concrete Beam
D. Drawing Detail Block Reinforcement
Example :
Drawing the Detail Block Reinforcement.
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30. Drawing A Plan Of Reinforce Concrete Beam
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44. Drawing A Plan Of Reinforce Concrete Beam
the end
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45. Drawing A Plan Of Reinforce Concrete Beam
Thank you
Compiled by : Rina D. Kania.S.P
SMK Negeri 2 Tasikmalaya
Teknologi dan Rekayasa