F. K. Kong MA, MSc, PhD, CEng, FICE, FIStructE, R. H. Evans CBE, DSc, D ès Sc, DTech, PhD, CEng, FICE, FIMechE, FIStructE (auth.)-Reinforced and Prestressed Concrete-Springer US (1987)

Program NMDDOE 473
The rectanqular section is to be doubly reinforced :
COmpression steel area required, As' = 7676.E-Ol mm**2
Tension steel area required, As • 3903.E+OO mm**2
STOP
Fig. 12.1-3 Console input and output for Example 12.1-1
Rectangular beam section
R
250.0
700.0
60.0
&0.0
&60.0
900.0
0.85
yy
Fig. 12.1-4 Content of data file BMBRSR.DAT
12.2 Computer program for Chapter 2
12.2(a)
Program NMDDOE ( = Normal Mix Design;
Department Of the Environment)
Figure 12.2-1 shows the Header of the program NMDDOE, which designs
normal concrete mixes in accordance with the method of the Department
of the Environment, as described in Section 2.7(b). Each concrete mix is
designed on the assumption that the density for uncrushed aggregate is
2600 kglm 3 and that for crushed aggregate is 2700 kglm 3 (see Step 4 of
Section 2.7(b)).
The input data for the program NMDDOE are: the target mean strength
at the specified age, the level of workability, the details about the cement,
the coarse aggregate and the fine aggregate, and the allowable limits on the
w/c ratio and the cement content. The output data from the program
NMDDOE are: the intermediate results of the mix design (e.g. the
required w/c ratio, etc) and the final mix properties in terms of weights of
materials per cubic metre of fully compacted fresh concrete.
Comment
The complete listing of the above program (with commentary), together
with the floppy disks, are obtainable from the Publishers. See Section
12.1(a) and Appendix 1.