Voids Created by Various Sizes

Depth of
Steelform
Cubic feet of concrete per LF
(for various widths of flangeforms)
 
53″ Wide
30″ Wide
20″ Wide
15″ Wide
10″ Wide
8″
N/A
N/A
1.63
1.07
0.79
0.52
10″
N/A
N/A
2.02
1.33
0.98
0.63
12″
N/A
N/A
2.41
1.58
1.17
0.75
14″
6.29
N/A
2.80
1.83
1.34
.086
16″
7.17
5.73
3.18
2.07
1.52
0.96
20″
8.92
7.13
3.93
2.54
1.85
1.16
24″
10.67
8.50
4.67
3.00
2.17
1.33


Flangeforms are installed by lapping 2′, 3′ and 4′ segments over one another to create a void length specified by the design engineer. While they are capable of providing the structural profile required, the lapping of the forms creates offsets that create a class “D” finish (up to 1″ offsets)

If the finish required is better than a class “D”, then some other type of form should be specified.
 

Concrete Quantities – 30″ Widths*

Depth of
Steelform
Width of Joist
Cubic feet of concrete per slab foot
for various slab thicknesses
Additional concrete for Tapered Endforms, cu. ft. per lin. foot of bearing wall or beam (one side only)
 
2 1/2″
3″
4 1/2″
8″

5″
6″
7″

0.317
0.333
0.347
0.359
0.374
0.389
0.484
0.499
0.514
0.143
0.139
0.135
10″
5″
6″
7″
0.348
0.367
0.386
0.390
0.409
0.427
0.515
0.534
0.552
0.179
0.174
0.169
12″
5″
6″
7″
0.381
0.404
0.425
0.422
0.445
0.467
0.547
0.570
0.592
0.214
0.208
0.203
14″
5″
6″
7″
0.415
0.441
0.467
0.456
0.483
0.508
0.581
0.608
0.633
0.250
0.243
0.236
16″
6″
7″
8″
0.481
0.509
0.537
0.522
0.551
0.578
0.647
0.676
0.703
0.278
0.270
0.236
18″
6″
7″
8″
0.521
0.553
0.583
0.563
0.595
0.625
0.688
0.720
0.750
0.313
0.304
0.296
20″
6″
7″
8″
0.564
0.609
0.633
0.606
0.641
0.675
0.731
0.776
0.800
0.347
0.338
0.329
24″
6″
7″
8″
0.653
0.695
0.735
0.694
0.736
0.776
0.819
0.861
0.901
0.417
0.405
0.395


*Apply only for areas over flangeforms and joists between them.

Bridging joists, special headers, beam tees, etc., are not included
 

Concrete Quantities – 20″ Widths*

Depth of
Steelform
Width of Joist
Cubic feet of concrete per slab foot
for various slab thicknesses
Additional concrete for Tapered Endforms, cu. ft. per lin. foot of bearing wall or beam (one side only)
 
2 1/2″
3″
4 1/2″
8″

5″
6″

0.361
0.381
0.402
0.422
0.527
0.547
0.200
0.192
10″
5″
6″
0.401
0.427
0.442
0.468
0.567
0.593
0.250
0.240
12″
5″
6″
8″
0.447
0.481
0.534
0.488
0.522
0.575
0.613
0.647
0.700
0.300
0.288
0.268
14″

5″
6″

7″

0.496
0.530
0.561

0.538
0.572
0.603
0.663
0.697
0.728
0.350
0.337
0.324
16″

5″
6″

7″

0.584
0.620
0.653

0.626
0.662
0.694
0.751
0.787
0.819
0.385
0.370
0.357

18″
5″
6″
8″
0.641
0.681
0.717
0.683
0.722
0.759
0.808
0.847
0.884
0.433
0.417
0.402
20″
5″
6″
8″
0.700
0.743
0.784
0.741
0.785
0.825
0.867
0.910
0.950
0.481
0.463
0.446
24″
5″
6″
8″
0.824
0.875
0.923
0.865
0.917
0.964
0.990
1.042
1.089
0.577
0.556
0.536


*Apply only for areas over flangeforms and joists between them.

Bridging joists, special headers, beam tees, etc., are not included

03.17.16 - RIO Ministries Annual Sporting Clay Fundraiser 2015
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