×
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

steels to mass concrete cracking

steels to mass concrete cracking

steels to mass concrete cracking

(OP)
Hello all,
I got a question in designing reinforced mass concrete: I have calculated amount of steel needed to limit the crack width according to ACI 207.2R, what do I do next? shall I just add the amount of steel on to flextural steel (which is calculated due to flexture) or just pick the amount whoever is higher? (ex. pick structural steel or cracking steel whoever is higher) TIA.

Greetings,

new civil grad :)

RE: steels to mass concrete cracking

Whichever amount controls.

RE: steels to mass concrete cracking

(OP)
thanks frv,
in this case, steels that limiting crack widths are always in the direction where min. flextural steel are present (horizontal steel in a wall), if this is the case, I would probably just go for cracking steel if the amount are higher than flextural steel? thanks again

RE: steels to mass concrete cracking

Try use smaller bars with smaller bar spacing. It will help to minimize the crack width.

RE: steels to mass concrete cracking

You should have two values for the amount of steel reinforcement:

1) Area of steel for flexural requirements
2) Area of steel required for crack control.

Tensile steel needs to be provided for flexure and should go in the tension face accordingly.

The crack control steel can be distributed between both faces in any proportion.  As long as both these requirements are satisfied, your okay.

I agree with kslee1000, try to keep your spacing less than 1' or 300mm.

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