Rebar Development Design Example | Part 6| Learn Structural Engineering

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This structural engineering example will teach you EVERYTHING about concrete cantilever retaining wall structures and the development of concrete reinforcing! Part 6 goes over development length of concrete reinforcing per the ACI 318-14 American Institute of Concrete.
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Опубликовано:

11 фев 2023

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Комментарии : 13

@ppdnd1253 8 месяцев назад

Thank you very much. Get much knowledge.

@emadnadi5206 5 месяцев назад

How about development length in the footing . The toe and the heel ?/

@ajayasuriya77 Год назад

The excess reinforcement reduction factor can be utilized for both tension and compression rebar development lengths by code but is not applicable for lap splice length. However, the code does have stringent exceptions when applying this excess reinforcement factor into account.

@Qaw434 Год назад

ACI 25.4.10 permits the devolpment length ld to be reduced in cases where the provided flextural reinforcement is greater than that required from analysis, except where prohibited by ACI 25.4.10.2 Also that reduction factor is not permitted in the design of members in seismic-force-resisting systems in a structure assigned to SDC D,E or F Ignoring this reduction factor will lead to a conservative value of ld

@bbdest3082 5 месяцев назад

The 6 inches probably was used when #2 rebar was used, but they don’t really use #2 rebar, rather. They use wire mesh instead

@ryanguay5460 Год назад

The Greek symbol is psi! (Pronounced sigh)

@Kestava_Engineering Год назад

Ryan coming in clutch with the Greek knowledge!

@abiodunekundayo7526 Год назад

hi bro ...... I am preparing for my PE. Please which Prep classes shold attend ? PPI2PASS ? SChool of PE ? ??

@Kestava_Engineering Год назад

was the popcorn stale? let me know ASAP below

@LoquendoProxy Год назад

I have a question here, isn't the "horizontal" length of the hook important too(the part of the rebar that connects to the lower mat)? I've seen some documentations that recommends also Ldh as a minimum so, horizontally, the hook would also need that same Ldh that we got (15'' for this example) and it counts from the external face of the wall to the end of the footing, is it correct? or would that count as ldext per section 25.3.1?

@user-kf1rc1vz2t 9 месяцев назад

Did you get an answer for this question?

@bellshbondshsh8387 5 месяцев назад

@@user-kf1rc1vz2t You need a minimum of the standard hook length for that part of the bar. Many industry standards use longer than the standard hook length for this sort of situation; for example some extend the standard hook length beyond the back side of the retaining wall, but there is no code requirement for this, just industry practice based on real-world testing and performance. Far more important though is that your hook runs in the same direction as the load! Again not required by code but testing shows that the orientation of the bar has a substantial affect on the actual failure load.

@bbdest3082 5 месяцев назад

The 6 inches probably was used when #2 rebar was used, but they don’t really use #2 rebar, rather. They use wire mesh instead