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Annex C
(normative)
Specifications for toothed-plate connectors
C.1 Type C1
C.1.1 Description and dimensions
A toothed-plate connector of type C1 (see Figure C.1) is a double- sided connector made of a circular plate,the edges of which shall be cut and bent over to form triangular teeth projecting alternately from opposite faces at 90 degree to the faces. The teeth shall be evenly spaced around the perimeter of the plate and, for connectors with diameter dc >=95 mm, around the perimeter of the bolt-hole in the centre of the plate. Each plate has two nail holes between the centre of the plate and the circumference and on opposite sides of thebolt-hole. The dimensions shall comply with Table C.1.
C.1.2 Material
Toothed-plate connectors of type C1 are made of either
cold rolled uncoated low carbon narrow strips for cold forming. The material shall comply with steel typeDC01+C390 (Material number: 1.0330) according to EN 10139 with tolerance of the thickness accordingto EN 10140. In addition, the minimum elongation of the material shall be 10 %
or
cold rolled high yield strength steel for cold forming HC340LA according to EN 10268, with tolerance ofthe thickness according to EN 10131
or
continuously hot-dip coated low carbon steel for cold forming DX51D+Z275 or AZ150 according toEN 10346 with tolerance of the thickness according to EN 10143.
C.2 Type C2
C.2.1 Description and dimensions
A toothed-plate connector of type C2 (see Figure C.2) is a single-sided connector made of a circular plate, theedges of which shall be cut and bent over to form triangular teeth projecting from one face at 90 to the face.The teeth shall be evenly spaced around the perimeter of the plate and, for connectors with diame-ter d, > 95 mm, additionally between the perimeter of the plate and the bolt-hole in the centre of the plate.Around the bolt-hole there is a flange projecting from the same face as the teeth. Each plate has two nailholes through the plate, between the centre of the plate and the circumference and on opposite sides of thebolt-hole. The dimensions shall comply with Table C.2.
C.2.2 Material
Toothed-plate connectors of type C2 are made of either
cold rolled uncoated low carbon narrow strips for cold forming. The material shall comply with steel typeDC01+C390 (Material number: 1.0330) according to EN 10139 with tolerance of the thickness according toEN 10140. In addition, the minimum elongation of the material shall be 10 %,
or
cold rolled high yield strength steel for cold forming HC340LA according to EN 10268 with tolerance of thethickness according to EN 10131.
C.3 Type C3
C.3.1 Description and dimensions
A toothed-plate connector of type C3 (see Figure C.3) is a double- sided connector made of an oval plate, theedges of which shall be cut and bent over to form triangular teeth projecting alternately from opposite facesat 90 to the faces. The teeth shall be 28 in number. The height of six teeth disposed in the middle of eachlonger side of the plate is smaller than the height of the other teeth. Each plate has three holes through theplate, a bigger one in the centre of the plate and two smaller ones between the centre of the plate and thecircumference and on opposite sides of the centre hole in the longer direction. The dimensions shall complywith Table C3.
C.3.2 Material
Toothed-plate connectors of type C3 are made of either
cold rolled uncoated low carbon narrow strips for cold forming. The material shall comply with steel typeDC01+C390 (Material number: 1.0330) according to EN 10139 with tolerance of the thickness according toEN 10140. In addition, the minimum elongation of the material shall be 10 %,
or
cold rolled high yield strength steel for cold forming HC340LA according to EN 10268 with tolerance of thethickness according to EN 10131.
C.4 Type C4
C.4.1 Description and dimensions
A toothed-plate connector of type C4 (see Figure C.4) is a single-sided connector made of an oval plate, theedges of which shall be cut and bent over to form triangular teeth projecting from one face at 90° to the face.The teeth shall be 14 in number. The height of three teeth disposed in the middle of each longer side of theplate is smaller than the height of the other teeth. Each plate has three holes through the plate, a bigger one inthe centre of the plate and two smaller ones between the centre of the plate and the circumference and onopposite sides of the centre hole in the longer direction. Around the centre hole there is a flange projectingfrom the same face as the teeth. The dimensions shall comply with Table C.4.
C.4.2 Material
Toothed-plate connectors of type C4 are made of either
cold rolled uncoated low carbon narrow strips for cold forming. The material shall comply with steel typeDC01+C390 (Material number: 1.0330) according to EN 10139 with tolerance of the thickness according toEN 10140. In addition, the minimum elongation of the material shall be 10 %,
or
cold rolled high yield strength steel for cold forming HC340LA according to EN 10268 with tolerance of thethickness according to EN 10131.
C.5 Type C5
C.5.1 Description and dimensions
A toothed-plate connector of type C5 (see Figure C.5) is a double -sided connector made of a square plate, theedges of which shall be cut and bent over to form triangular teeth projecting alternately from opposite facesat 90 to the faces. The teeth shall be evenly spaced along the perimeter and along the square hole in themiddle of the plate. Each plate shall have a nail hole in each corner of the plate. The dimensions shall complywith Table C.5.
C.5.2 Material
Toothed-plate connectors of type C5 are made of either
cold rolled uncoated low carbon narrow strips for cold forming. The material shall comply with steel typeDC01+C390 (Material number: 1.0330) according to EN 10139 with tolerance of the thickness according toEN 10140. In additin, the minimum elongation of the material shall be 10 %,
or
cold rlled high yield strength steel for cold forming HC340LA according to EN 10268 with tolerance of thethickness according to EN 10131.
C.6 Type C6
C.6.1 Description and dimensions
A toothed-plate connector of type C6 (see Figure C.6) is a double-sided connector made of a circular platewith a bolt-hole through the centre. Two nail holes may be drilled midway between the centre and thecircumference and on opposite sides of the bolt-hole. The edges of the plate are cut and bent over to form24 triangular teeth spaced evenly around the perimeter and projecting altermately from opposite faces at 90° tothe faces. The dimensions shall comply with Table C.6.
C.6.2 Material
Toothed-plate connectors of type C6 are made of continuously hot-dip coated low carbon steel for coldforming of DX51D+Z275 or AZ150 according to EN 10346 with tolerance of the thickness according toEN 10143.
C.7 Type C7
C.7.1 Description and dimensions
A toothed-plate connector of type C7 (see Figure C.7) is a single-sided connector made of a circular plate witha bolt-hole through the centre. Two nail holes may be drilled midway between the centre and thecircumference and on opposite sides of the bolt-hole. The edges of the plate are cut and bent over to form12 triangular teeth spaced evenly around the perimeter and projecting from one face at 90° to the face.Around the bolt-hole there is a flange projecting from the same face as the teeth. The dimensions shall complywith Table C.7.
C.7.2 Material
Toothed-plate connectors of type C7 are made of continuously hot-dip coated low carbon steel for coldforming of DX51D+Z275 or AZ150 according to EN 10346 with tolerance of the thickness according toEN 10143.
C.8 Type C8
C.8.1 Description and dimensions
A toothed-plate connector of type C8 (see Figure C.8) is a double-sided connector made of a square platewith a bolt-hole through the centre. Two nail holes may be drilled on opposite sides of the bolt-hole. Theedges of the plate are cut and bent over to form 32 triangular teeth, with 8 evenly spaced teeth on each edge,projecting alternately from opposite faces at 90" to the faces. The base of each tooth shall be inclined at anangle of 60 to the edge of the plate or parallel to it. The dimensions shall comply with Table C.8.
C.8.2 Material
Toothed-plate connectors of type C8 are made of continuously hot-dip coated low carbon steel for coldforming of DX51D+Z275 or AZ150 according to EN 10346 with tolerance of the thickness according toEN 10143.
C.9 Type C9
C.9.1 Description and dimensions
A toothed-plate connector of type C9 (see Figure C.9) is a single-sided connector made of a square plate witha bolt-hole through the centre. Two nail holes may be drilled on opposite sides of the bolt-hole. The edges ofthe plate are cut and bent over to form 16 triangular teeth, with 4 evenly spaced teeth on each edge,projecting from one face at 90 to the face. The base of each tooth shall be inclined at an angle of 60 to theedge of the plate. Around the bore-hole there is a flange projecting from the same face as the teeth. Thedimensions shall comply with Table C.9.
C.9.2 Material
Toothed-plate connectors of type C9 are made of continuously hot-dip coated low carbon steel for coldforming of DX51D+Z275 or AZ150 according to EN 10346 with tolerance of the thickness according toEN 10143.