COST IN CENTS PER SQUARE FOOT OF REINFORCED-
CONCRETE FLOOR SLABS SUPPORTED ON STEEL BEAMS
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Thickness|⁵/₁₆-Inch| ⅜-Inch |⁷/₁₆-Inch | ½-Inch |⅝-Inch
of Slab |Diameter |Diameter|Diameter |Diameter|Diameter
Inches | Rods at |Rods at | Rods at |Rods at |Rods at
| 6-Inch | 6-Inch | 6-Inch | 6-Inch | 6-Inch
| Centers |Centers | Centers |Centers |Centers
---------+---------+--------+---------+--------+--------
3½ | 14.87 | 15.58 | | |
4 | 15.75 | 16.46 | 17.24 | |
4½ | 16.62 | 17.33 | 18.11 | 18.87 |
5 | 17.50 | 18.21 | 19.00 | 19.75 | 20.87
5½ | 18.37 | 19.08 | 19.87 | 20.62 | 22.62
6 | 19.25 | 19.96 | 20.75 | 21.50 | 23.50
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