curve and min. positive curve are given at 1/12 points for each span.
Top and bottom inflection points are located. Fixed simple and maxi- mum shears are given. Concrete beam is sized; end, midspan and compressive steel areas are selected. Complete stir rup design and perimeters are given as well as all code reductions and require ments. Load multiplying factors as well as Q and PHI may be specificed.
Beam size will be determined if not specified. Deflection characteristics for any sustained live load may also be obtained. Effects of beam and column frame moments due to wind or siesmic forces may also be input to be combin- ed with gravity loading.
4. Non-prismatic continuous beam ultimate strength
No. of spans 5 Yield St. (PSI) - 6000.0
Conc. ratio = 1.0
Program completely performs all operations required for the skip live load and dead load analysis and design for almost any shape, width or depth of beam of up to 12 spans. Columns with various end conditions and beam cantilevers can be included. Beams may be unsymmetrical in the span and different in each span or prismatic. Loading may be chosen from any of eighteen types of diagrams to be combined.
Max. negative moment curve, max. positive moment curve and min, posi- tive curve are given at 1/12 points for each span.
Top and bottom inflection points are located. Fixed, simple and maxi- mum shears are given. Concrete beam is sized, end, midspan and compressive steel areas are selected.
Conc. St. (PSI) = 4000.0 Tens. Spl. St. = 5.0
Span No.
Length (ft) Live L. (PSF)
Superimp. DL (PSF)
Partial LL. (lb/lin.ft.)
C1 (ft)
C2 (ft)
1
18.3
40.0
10.0
0.0
0.0
0.0
2
18.3
40.0
10.0
0.0
0.0
0.0
3
18.3
40.0
10.0
0.0
0.0
0.0
18.3
40.0
10.0
0.0
0.0
0.0
5
12.5
100.0
10.0
800.0
2.5
10.0
Cantilevers, if any
Side
L (ft)
End width (ft)
Live L. (PSF)
Sup. DL. (PSF)
Left
0.0
18.0
Right
6.0
16.0
0.0
40.0
0.0
Line LL. (PLF)
50.0
Line DL. (PLF)
500.0
10.0
50.0
500.0
Columns
Above slab
Below slab
Slab width at
Col. No.
Width (in)
Depth (in)
Width (in)
Depth (In)
this column (ft)
1
14.0
16.0
14.0
20.5
18.0
2
14.0
16.0
14.0
20.5
18.0
3
14.0
16.0
14.0
20.5
18.0
14.0
16.0
14.0
20.5
18.0
5
0.0
16.0
0.0
20.5
16.0
6
0.0
16.0
0.0
20.5
16.0
NOTE THAT ZERO WIDTH INDICATES A ROUND COLUMN
TOP REINFORCEMENT
COLUMN STRIP
Col
Bar
Long bars
Short bars
No.
Diam.
No.
Left Right
No.
Left Right
Diam.
MIDDLE STRIP
All bars No. Left
Right
1
5
3
0.8 4.7
4
0.8
3.5
8
0.8 4.5
2
5
6.2
6.2
6
4.2
4.2
8
6.0 6.0
3
5
5.5
5.5
5
3.8
3.8
8
5.2 5.2
4
5
5.5 6+2
5
3.8 4.2
8
5.2
6.0
5
4
5.5 4.6
4
3.8 3.4
7
5.2
4.3
6
5
7 5.1 6.0
3.6
6.0
7
4.8
6.0
BOTTOM REINFORCEMENT
Span Bar
No. Diam.
COLUMN STRIP
Long bars
Short bars
MIDDLE STRIP}
No. Length No. Length No.
4
18.3
16.2
Long bars
Length
18.3
Short bars
No.
Length
15.8
2
4
17.8
13.7
4
17.8
12.8
3
17.8
13.7
17.8
12.8
17.8
13.7
17.8
12.8
12.5
11.1
12.5
10.8
TOTAL SLAB REINFORCEMENT
Negative steel
897.9 pounds
Positive steel 806.8 pounds
Other quantities
Surface area 1595.3 sq.ft. Yardage of concrete 39.39 cu.yd.
REINFORCEMENT PER AREA 1.068 POUNDS PER SQUARE FOOT, in one direction.
Program for Flat Plate Design. No. 10.
Far East BUILDER, February 1971
29
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