×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

RC beam detailing
2

RC beam detailing

RC beam detailing

(OP)
Hello Everyone,

Can anyone explain the following beam schedule? I cannot interpret some of the abbreviations used in the table specifically the headings.

RE: RC beam detailing

I don't know which "abbreviations" you are having trouble interpreting, but in order to understand the schedule, you need the beam details which go with the schedule. That should explain what an "A1", "A2", etc. bar looks like and where it applies.

RE: RC beam detailing

Hende - When reinforcing steel is shipped to a jobsite identical bars are often grouped together and tagged so that the contractor can identify them. Markings on the tags are in accordance with the rebar fabricator's drawing practices (not the engineer's drawings). The fabricator's shop drawings identify where each of the tagged bars are used. The attached schedule, including the nomenclature, looks exactly like what I would expect to see on the fabricator's shop drawings.

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

RE: RC beam detailing

SRE,
I don't think so. This looks to me more like a beam schedule on a design drawing. A "T16" just designates the size and grade of the bar, not the length.

RE: RC beam detailing

hokie - You are probably right. I'm not that familiar with the metric designations; did notice that the stirrups are spaced 150 mm center-to-center. Hope the OP will follow up.

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

RE: RC beam detailing

For proper understanding, this beam schedule must be accompanied by a typical long section (& probably a few cross-sections) of beam, indicating location of various type of longitudinal bars (referred by marks A1, A2, B, D1, D2 etc in the Table Headings) and stirrups (marked by letters G, H and J, in the Table).

A good structural engineer is often a blessing for others.

RE: RC beam detailing

I agree with Hokie here.

here must be a Standard Beam Reinforcing Placement Detail that will answer all your questions, otherwise, the contractor is left as out in the cold as you are right now, and the project becomes unbuildable, let alone un-permittable.

Mike McCann, PE, SE (WA)


RE: RC beam detailing

(OP)
Thanks a lot for your kind answers. What does exactly lacer bars EF. mean in the last column? I have the whole set of drawing, but it doesn't include longitudinal and sectional view of the beams.

RE: RC beam detailing

Hende - The "lacer bars" that I am familiar with are horizontal ties, around the perimeter of a footing. They are used to confine the concrete horizontally. They do have other uses, such as in certain slabs supported by beams. As your rebar schedule indicates, I would not expect to see them is a typical beam. "EF" is the usual abbreviation for "each face".

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

RE: RC beam detailing

I agree with SRE that "lacer bars" are side face reinforcement, but your schedule doesn't show any of these. But in order to understand the beams, you must have details. Do the documents refer to some type of standard? If you can't figure this out, you need to ask the design engineer.

RE: RC beam detailing

(OP)
Please, have a look at this table which includes lacer bars!


The slab is flat slab and at some places there are beams within the slab! look at the floor plan which shows the location of the beams..

RE: RC beam detailing

Beams that are integral with elevated slabs are (reinforced concrete) T-beams. In the bridge industry they are sometimes called "deck girders". They are still used, but were more common decades ago before the development of prestressed concrete.

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

RE: RC beam detailing

OK, the plan helps. The 750 and 825 deep beams have T10-150 side face longitudinal bars, which is appropriate. The top, bottom, and shear reinforcement are also shown. However, you apparently don't have anything which defines the length of bars, lap lengths, hook details, stirrup types, etc. The specified hanger bars are also a mystery, as I don't see how hanger bars would apply with those beams. Instead of asking us for more advice, you really should be asking the design engineer.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources