Report No.: CCEER-03-2

Title: User's Manual for RCMC v. 2.0: A computer Program for Moment-Curvature Analysis of Confined and Unconfined Reinforced Concrete Sections

Authors: N. Wehbe and M. Saiidi

Date: June 2003

Sponsoring Agency: California Department of Transportation (CalTrans)

Performing Organization:
Department of Civil Engineering/258
University of Nevada, Reno
Reno, NV 89557


This report constitutes the user's manual for RCMC v. 2.0. RCMC v. 2.0 is a computer program for moment-curvature analysis of reinforced concrete sections. The program was written in C + + and compiled using TURBO C + + 4.5 (for DOS) from Borland International.

The program consists of one execution file called "RCMC2O.EXE" and creates one output file. The output file name is specified by the user. Data input can be either interactive, i.e. the user is prompted to enter the data during program execution, or through an input data file. The input data file is an ASCII file that can be created and edited using any ASCII text editor. When the interactive data input mode is selected, the user has the option to save the input data in an ASCII file. The name of the file containing the input data is specified by the user.

Three examples illustrating the use of RCMC v. 2.0 are also included in this manual. Each examples present both input and output data.

Some of the features that RCMC v. 2.0 shares with the previous version are

  • Analysis of circular and non-circular cross sections
  • Analysis of confined and unconfined cross sections
  • Concrete layers of different confinement levels in the same cross section can be accommodated
  • Steel layers of different properties in the same cross section can be accommodated
  • The moment-curvature analysis of a reinforced concrete cross section can be performed for several axial loads during the same run
  • The effect of crushing of the cover concrete on the section behavior is accounted for in the analysis

New features in RCMC V. 2.0 include the following

  • The option of modeling strain hardening of steel using a parabolic profile
  • The option of using a bi-linear curve to model the stress-strain relationship of cover concrete that is confined within fiber reinforced plastic jackets
  • Continued data output past the points of rupture of reinforcing steel Up to 30 concrete layers can be specified in a section
  • Up to 50 steel layers can be specified in a sec