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Saturday 19 January 2019
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Retrofitting and better performance:

 

Reducing Structural weight, and thus, lateral force of gravity, results in increasing the structure’s resistance against the quakes
this system reduces human errors significantly
More appropriate vibration of concrete will be provided due to reduction of unnecessary volume of rebar in joining zones
Involvement of concrete with rebar is increased due to Decrease of unnecessary additional volume of rebar
Resistance at the joining zone will be higher than other points through the rebar due to an increase in cross section area




Technical Notes

Overlap

Coupler

Forging

Technical quality & reactions in joining zone

Poor

Good

 

Excellent

Time of build & implementation

More

Less

least

Possible Defects in joining zone

More

Less

least

Alignment

None

Good

Excellent

Over weight in joining zone

Equal to Overlap Weight

Equal to a coupler

None

Using Creator Diameters

Impossible

Possible

Possible

Weight of used steel

Equal to Overlap

None

None

Cross section of the beam in joining zone

Increases

The least

The least

Joining length

80 to 200 cm

Approximately 10 cm

Maximum 3 cm

Rebar wastes

High

None

None

Hired factor of joining

Steel Wire

Coupling & by thread

Oxygen Acetylene

Elimination of high density of rebars

Unavoidable

Good

The best

Movement of the sands through the joining zone

Hardly

Easily

More easily

Cost

Very high

High

affordable



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