Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Re: Modulus of Elasticity for concrete

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Hello Thor,

I my copy of "Reinforced Concrete Design, 5th ed." by Wang & Salmon
On page 15, they reference the modulus of elasticity as:

Ec = 0.043 x wc^1.5 x sqrt(fc')      (ACI 318-89M)

with wc in kg/m^3 and Ec and fc' in MPa

Then they reference Ec for normal weight concrete as:

Ec = 5000 x sqrt(fc')           (ACI 318-89M)

with Ec and fc' in MPA

Then they reference Ec for normal weight concrete as:

Ec = 15,000 x sqrt(fc')      (approximate)

with Ec and fc' in kgf/cm^2

I hope that helps,

On 2 Jun 2015 at 19:58, Thor Tandy wrote:

> Found these in a recent paper on redundancies
> Ec = 14000 sqrt(f´c) kg/cm2 and
> Ec = 4400sqrt( f´c) MPa  (Canada “4500�)
> Anyone know if these are correct?
> Thor>

This email is free from viruses and malware because avast! Antivirus protection 
 is active.

Post your message to the list by sending it to: 

The email messages sent to the list will be saved in an archive on the World Wide Web.
These archives are located at:

To contact the list owner, send your message to:

Sponsored By: Pacific Structural & Forensic Engineers Group, Inc. (PSFEG)

To unsubscribe, switch to/from digest, get on/off vacation, or change your email address, click here.