Column forms for square or rectangular columns (cont.) Quantities in parentheses show the cross-section area of a square column. When estimating a rectangular column, use the costs for the square column with closest cross-section area. For scheduling purposes estimate that a crew of 5 can lay out, fabricate and erect about 550 to 600 SFCA of square or rectangular column forms in an 8-hour day.
Over 20" x 20" to 24" x 24" (576 square inches), using nails, snap ties, oil and column clamps, with 1.1 SF of plyform and 2.4 BF of lumber per SFCA
  1 use F5@.069 SFCA 3.09 3.27 6.36
  3 uses F5@.050 SFCA 1.67 2.37 4.04
  5 uses F5@.040 SFCA 1.39 1.89 3.28
Over 24" x 24" to 30" x 30" (900 square inches), using nails, snap ties, oil and column clamps, with 1.1 SF of plyform and 2.4 BF of lumber per SFCA
  1 use F5@.061 SFCA 3.09 2.89 5.98
  3 uses F5@.040 SFCA 1.67 1.89 3.56
  5 uses F5@.031 SFCA 1.39 1.47 2.86
Over 30" x 30" to 36" x 36" (1,296 square inches), using nails, snap ties, oil and column clamps, with 1.1 SF of plyform and 2.4 BF of lumber per SFCA
  1 use F5@.050 SFCA 3.09 2.37 5.46
  3 uses F5@.040 SFCA 1.67 1.89 3.56
  5 uses F5@.031 SFCA 1.39 1.47 2.86
Over 36" x 36" to 48" x 48" (2,304 square inches), using nails, snap ties, oil and column clamps, with 1.1 SF of plyform and 2.5 BF of lumber per SFCA
  1 use F5@.040 SFCA 3.15 1.89 5.04
  3 uses F5@.031 SFCA 1.70 1.47 3.17
  5 uses F5@.020 SFCA 1.49 .95 2.44
Column capitals for square columns Capital forms for square columns usually have four symmetrical sides. Length and width at the top of the capital are usually twice the length and width at the bottom of the capital. Height is usually the same as the width at the capital base. These costs assume capitals installed not over 12' above floor level, use of nails, form oil, shores and accessories with 1.5 SF of plyform and 2 BF of lumber per SF of contact area (SFCA). Complexity of these forms usually makes more than 3 uses impractical.
For scheduling purposes estimate that a crew of 5 can lay out, fabricate and erect the following quantities of capital formwork in an 8-hour day:
              70 to 80 SF for 12" to 16" columns 90 to 100 SF for 20" to 24" columns
          110 to 120 SF for 30" to 36" columns 160 to 200 SF for 48" columns
Up to 12" x 12" column, 6.0 SFCA
  1 use of forms F5@4.01 Ea 20.10 190.00 210.10
  3 uses of forms F5@3.00 Ea 10.10 142.00 152.10
Over 12" x 12" to 16" x 16" column, 10.7 SFCA
  1 use of forms F5@6.00 Ea 35.80 284.00 319.80
  3 uses of forms F5@4.01 Ea 17.90 190.00 207.90
Over 16" x 16" to 20" x 20" column, 16.6 SFCA
  1 use of forms F5@8.31 Ea 55.60 394.00 449.60
  3 uses of forms F5@6.00 Ea 27.80 284.00 311.80
Over 20" x 20" to 24" x 24" column, 24.0 SFCA
  1 use of forms F5@12.0 Ea 80.40 568.00 648.40
  3 uses of forms F5@9.00 Ea 40.20 426.00 466.20
Over 24" x 24" to 30" x 30" column, 37.5 SFCA
  1 use of forms F5@16.0 Ea 126.00 758.00 884.00
  3 uses of forms F5@12.0 Ea 62.80 568.00 630.80
Over 30" x 30" to 36" x 36" column, 54.0 SFCA
  1 use of forms F5@20.0 Ea 181.00 947.00 1,128.00
  3 uses of forms F5@16.0 Ea 90.50 758.00 848.50
Over 36" x 36" to 48" x 48", 96.0 SFCA
  1 use of forms F5@24.0 Ea 322.00 1,140.00 1,462.00
  3 uses of forms F5@18.0 Ea 161.00 853.00 1,014.00

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