19. Other rebar arrangement

1) Stairway rebar arrangementⓐ Place the bars in the suggested sequence according to drawing.

Double reinforcement should not be bent.

ⓑ There are a few extended bars from pillars or beams to the stairs .

You should assemble by using standard hook(anchor) in case of assembling to cut

without bending bars for this working.

Example)

ⓐ Place the bars in the numerical order shown below

ⓑ Bend ④ bars after binding

ⓒ Cut ⑥ after binding

※ Special notice for the bar-arrangement

tension fixation

fix to corner pass rebar(lower part rebar)

tension fixed lengthtension fixed length

lower part bar upper part bar

2) Balcony(Cantilever)

① The most important part in cantilever is the bar at the top above distribution bars.

It is common to anchor the top bars into a beam, however, they can be anchored in

a slab so long as there is no difference between their levels.

To obtain adequate fixed length is most important.

② Bars at the bottom should be anchored securely to provide for earthquake and

tornado.

③ When the level of cantilever and slab plate are different, bars in the slab should be

anchored onto the beam.

If the bars at the top are bent to be anchored onto the opposite slab, there might be

a crack due to tensile strength.

The bars at the top should be maintained with bar support.

tension fixation

tension fixation

vertical/horizontalD10-@220

upper support rebar

upper support rebar

spacer

spacer spacer

spacer

3) Parapet rebar arrangementThe expansion of topping concrete at the top of a building due to variations of

daylights will pass out great compression load to the parapet.

Therefore, the double reinforcement

in the parapets are better to be

anchored onto beams or slabs.

4) Reinforcement of slab open point

Explanation :1) In case the length of open part is

over 1,000mm , you should arrangeafter receipt of permission ofstructure supervisor if there are norebar arrangement detailed drawing.

2) *mark :arrange to single arrangementif established rebar arrangement issingle arrangement arrange to doublearrangement if established rebararrangement is double arrangement

3) ----- is established slab rebar4) Rebar to not specified of rebar size

must use same size rebar asestablished arrangement

Parapet might occur vertical crack mainlybecause the length is long. It is effective to avoid crack by arrangingto outside of horizontal rebar.

D13(reinforcement bar)

tension fixedlength

Use 90°standard hook rebar

In case open part is over 300mm,4 edges should reinforce 1-HD16

Reinforce each rebar to both open part asrebar distance 75mm for +1 unit of rebar Q’ty tobe cut existing rebar from open part.

min

imiz

eop

en p

art

L<1000min. 600 min. 1200

5) Details of reinforced rebar on concrete wall open point① Circle type open part

② Square type open part

Explanation :

1) In case the size of open part is D<150mm, omit vertical & horizontal rebar

2) mark : arrange to single arrangement if established rebar arrangement as

siugle(double arrangement as double)

circle type open part distance should be over “D”

max. 600 max. 600

In case of over D>450mm1-HD16×1800mm

1-HD16

min

. 600

(TY

P)

min. 600

open part

6) Rebar arrangement of slope way in main entrance

7) Trench rebar arrangement

90°standard hookD10→120

tension fixedlength

tension

fixed le

ngth

tension fixedlength

tension fixedlength

lamp slab rebararrangement

tension fixed

length