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MASONS SUPPLY COMPANY
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M A S C O . N E T
GENERAL & TECH INFO
CHARTS
Typical Form Tie Spacing For Wall Forms
Note:
The above table is based on the following conditions.
Concrete -
Made with type 1 cement weighing 150 pcf. contains no admixtures, slump of 4" or less and normal internal vibration to a
depth of 4 ft. or less.
Concrete Temperature -
For practical purposes, 50 °F is used by many form designers as the temperature of fresh concrete during
winter, with 70°F being used as the summer temperature. This "rule of thumb" appears to work satisfactory unless the concrete has
been heated or cooled to a controlled temperature.
Form Ties -
Safe working loads are based on a factor of safety of approximately 2 to 1 (ultimate to SWL).
LATERAL PRESSURE
(LBS) IN PSF
LOADS ON FORM TIES (IN KIPS)
3,000
3.0
5.3
6.0 12.0 18.0 27.0 36.0 48.0 60.0 75.0 90.0 108.0 126.0 147.0 168.0 192.0
2,900
2.9
5.2
5.8 11.6 17.4 26.1 34.8 46.4 58.0 72.5 87.0 104.4 121.8 142.1 162.4 185.6
2,800
2.8
5.0
5.6 11.2 16.8 25.2 33.6 44.8 56.0 70.0 84.0 100.8 117.6 137.2 156.8 179.2
2,700
2.7
4.8
5.4 10.8 16.2 24.3 32.4 43.2 54.0 67.5 81.0 97.2 113.4 132.3 151.2 172.8
2,600
2.6
4.6
5.2 10.4 15.6 23.4 31.2 41.6 52.0 65.0 78.0 93.6 109.2 127.4 145.6 166.4
2,500
2.5
4.5
5.0 10.0 15.0 22.5 30.0 40.0 50.0 62.5 75.0 90.0 105.0 122.5 140.0 160.0
2,400
2.4
4.3
4.8
9.6 14.4 21.6 28.8 38.4 48.0 60.0 72.0 86.4 100.8 117.6 134.4 153.6
2,300
2.3
4.1
4.6
9.2 13.8 20.7 27.6 36.8 46.0 57.5 69.0 82.8 96.6 112.7 128.8 147.2
2,200
2.2
3.9
4.4
8.8 13.2 19.8 26.4 35.2 44.0 55.0 66.0 79.2 92.4 107.8 123.2 140.8
2,100
2.1
3.7
4.2
8.4 12.6 18.9 25.2 33.6 42.0 52.5 63.0 75.6 88.2 102.9 117.6 134.4
2,000
2.0
3.6
4.0
8.0 12.0 18.0 24.0 32.0 40.0 50.0 60.0 72.0 84.0 98.0 112.0 128.0
1,900
1.9
3.4
3.8
7.6 11.4 17.1 22.8 30.4 38.0 47.5 57.0 68.4 79.8 93.1 106.4 121.6
1,800
1.8
3.2
3.6
7.2 10.8 16.2 21.6 28.8 36.0 45.0 54.0 64.8 75.6 88.2 100.8 115.2
1,700
1.7
3.0
3.4
6.8 10.2 15.3 20.4 27.2 34.0 42.5 51.0 61.2 71.4 83.3 95.2 108.8
1,600
1.6
2.8
3.2
6.4
9.6 14.4 19.2 26.6 32.0 40.0 48.0 57.6 67.2 78.4 89.6 102.4
1,500
1.5
2.7
3.0
6.0
9.0 13.5 18.0 24.0 30.0 37.5 45.0 54.0 63.0 73.5 84.0 96.0
1,400
1.4
2.5
2.8
5.6
8.4 12.6 16.8 22.0 28.0 35.0 42.0 50.4 58.8 68.6 78.4 89.6
1,300
1.3
2.3
2.6
5.2
7.8 11.7 15.6 20.8 26.0 32.5 39.0 46.8 54.6 63.7 72.8 83.2
1,200
1.2
2.1
2.4
4.8
7.2 10.8 14.4 19.2 24.0 30.0 36.0 43.2 50.4 58.8 67.2 76.8
1,100
1.1
2.0
2.2
4.4
6.6 9.9 13.2 17.6 22.0 27.5 33.0 39.6 46.2 53.9 61.6 70.4
1,000
1.0
1.8
2.0
4.0
6.0 9.0 12.0 16.0 20.0 25.0 30.0 36.0 42.0 49.0 56.0 64.0
900
0.9
1.6
1.8
3.6
5.4 8.1 10.8 14.4 18.0 22.5 27.0 32.4 37.8 44.1 40.4 57.6
800
0.8
1.4
1.6
3.2
4.8 7.2 9.6 12.8 16.0 20.0 24.0 28.8 33.6 39.2 44.8 51.2
700
0.7
1.2
1.4
2.8
4.2 6.3 8.4 11.2 14.0 17.5 21.0 25.2 29.4 34.3 39.2 44.8
600
0.6
1.1
1.2
2.4
3.6 5.4 7.2
9.6 12.0 15.0 18.0 21.6 25.2 29.4 33.6 38.4
Area SF
(Tie spacing)
1.0
(1'x1')
1.8
(16"x16")
2.0
(1'x2')
4.0
(2'x2')
6.0
(2'x3')
9.0
(3'x3')
12.0
(3'x4')
16.0
(4'x4')
20.0
(4'x5')
25.0
(5'x5')
30.0
(5'x6')
36.0
(6'x6')
42.0
(6'x7')
49.0
(7'x7')
56.0
(7'x8')
64.0
(8'x8')
Recommend Form Ties
Form Ties SWL (KIPS)
Recommend Form Ties
Form Ties SWL (KIPS)
1" Threadbar
63.70
She Bolt with 3/4" Coil Inner
18.00
7/8" Threadbar Taper Tie
32.50
She Bolt with 1/2" Coil Inner
9.00
7/8" Threadbar
39.20
She Bolt with 1/2" N/C Inner
6.30
1-1/4" to 1" Coil Taper Tie
34.00
2 Strut 1/2" Coil Tie Heavy
6.75
5/8" Thread Bar Taper Tie
18.40
2 Strut 1/2" Coil Tie Standard
4.50
5/8" Threadbar
19.10
Snaptie Heavy
3.125
5/8" DCR Bar
18.40
Snaptie Standard
2.25
Use the appropriate Form Ties for loads below their respective line. A safety factor of 2 has been applied to determine sage working loads (SWL) of ties.