SHERPA Wood Connector with Hardwood

Due to the increasing use of hardwood for load-bearing components, we have looked at the effects on our SHERPA connector system and in particular on the special screws.

For example, screw-in tests were carried out at different screw-in angles in relation to the grain direction of the wood. This was followed by corresponding load capacity tests.

Based on this, the practical screw lengths and the associated load carrying capacity values are now available for the dimensioning of connections of various hardwoods and materials made from them.

M

GL 24 H

Hardwood

6.5 x 65 mm

6.5 x 65 mm

6.5 x 85 mm

M 15

14,9

34,3

48,0

M 20

23,6

54,3

76,0

M 25

27,8

63,9

89,5

M 30

32,0

73,6

103,0

M 40

40,1

92,2

129,1

ηs ... Factor per screw length

6.5 x 85 mm

Softwood

1,40

6.5 x 105 mm

Softwood

1,80


L

GL 24 H

Hardwood

8 x 100 mm

8 x 100 mm

8 x 120 mm

L 30

36,1

83,0

103,8

L 40

44,2

101,7

127,1

L 50

52,0

119,6

149,5

L 60

67,4

155,0

193,8

L 80

82,4

189,5

236,9

L 100

97,1

223,3

279,2

L 120

111,6

256,7

320,9

ηs ... Factor per screw length

8 x 120 mm

Softwood

1,25

8 x 140 mm

Softwood

1,49


XL

GL 24 H

Hardwood 8 X 120 mm

8 x 160 mm

SHERPA

SCHMID

XL 55

65,5

107,3

116,6

XL 70

80,0

131,1

142,4

XL 80

94,3

154,5

167,9

XL 100

108,4

177,6

193,0

XL 120

135,9

222,6

242,0

XL 140

149,4

244,7

266,0

XL 170

176,0

288,3

313,4

XL 190

202,2

331,2

360,0

XL 220

228,0

373,5

406,0

XL 250

253,5

415,3

451,4


XXL

GL 24 H

Hardwood 8 X 120 mm

8 x 160 mm

SHERPA

SCHMID

XXL 100

94,3

154,5

167,9

XXL 120

122,2

200,2

217,6

XXL 140

149,4

244,7

266,0

XXL 170

176,0

288,3

313,4

XXL 190

202,2

331,2

360,0

XXL 220

228,0

373,5

406,0

XXL 250

253,5

415,3

451,4

XXL 280

278,7

456,5

496,2

XXL 300

303,7

497,5

540,8

ηs ... Factor per screw length

8 x 120 mm

Softwood

0,71

8 x 140 mm

Softwood

0,86

8 x 180 mm

Softwood

1,13

8 x 200 mm

Softwood

1,25


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