Formwork for Concrete Structures by R.L.Peurifoy and G.D- By EasyEngineering.net

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Properties of Form Material 77
Species and Properties of Wood
Common Wire Nail Size/
Dimensions
Southern
Pine
S.G. = 0.55
Douglas
Fir-Larch
S.G. = 0.50
Hem-Fir
S.G. = 0.43
Side
Member
Thickness
in.
Size
Diameter
in.
Length
in.
Dowel
bearing
strength
= 5,500
Dowel
bearing
strength
= 4,650
Dowel
bearing
strength
= 3,500
¾ 8d 0.131 2½ 104 90 73
10d 0.148 3 121 105 85
12d 0.148 3¼ 121 105 85
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16d 0.162 3½ 138 121 99
20d 0.192 4 157 138 114
30d 0.207 4½ 166 147 122
40d 0.225 5 178 158 132
50d 0.244 5½ 182 162 136
1½ 16d 0.162 3½ 154 141 122
20d 0.192 4 185 170 147
30d 0.207 4½ 203 186 161
40d 0.225 5 224 205 178
50d 0.244 5½ 230 211 183
Notes:
1. See NDS, ref. [1], for values for additional thicknesses and species, and for additional
adjustments that may be required for a particular condition.
2. Dowel bearing strength is given in lb per sq in.
Lateral Design Values for Common Nails Driven into Side Grain of
Two Members with Identical Species, lb
TABLE 4-24
Toe-Nail Connections
Toe-nails are sometimes used to fasten two members of wood. Toenails
are driven at an angle of approximately 30° with the member
and started approximately one-third the length of the nail from the
member end.
When toe-nails are used to connect members, the tabulated withdrawal
values shown in Table 4-23 should be multiplied by 0.67 and
the nominal lateral values in Table 4-24 multiplied by 0.83.
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