BS 1 - BS 6
RS 12 - RS 42
KK 1 - KK 3
SA 16 - SA 25
ASQ 12 - ASQ 20
VA 1
BS-spherical node

The BS-spherical node

The BS-spherical node is a casted shell bowl made of GS-52 steel (according to the German Standard) with an outer diameter up to 400 mm. The thickness of the BS-spherical node wall is between 15 mm and 25 mm. To place the required connection bolts there must be drilled holes into the BS-sphericla node. The angles of member axes meeting the node are highly variable. The minimum distance of the holes is normally determinded by the geometry of the members to be connected. The BS-spherical node is to prefer for all connections joining space members. These would include for example space truss systems, shells and domes.
The BS-spherical nodes have a sufficient large opening to move and fix elements by bolting from inside to outside.

[BS-spherical node]

{ 1 }     BS-spherical node

 

{ 2 }     Steel tube

 

{ 3 }     BS-bowl washer

 

{ 4 }     Bolt

 

{ 5 }     BS-connector

The following table shows the standard dimensional specifications for the BS-spherical node:

BS-spherical node

 

KK 1

KK 2

KK 3

Outer shell diameter

[mm]

250

300

400

Shell thickness

[mm]

12

25

Acces hole diameter

[mm]

100

150

120

Material

 

GS-42 / GGG-42

The allowable loads are calculated based on steel design or by testing.

The BS-bowl washer

The BS-bowl washers fit to the BS-spherical node and guarantee a straight supporting surface for the bolt head (see figure below).

[BS-bowl washer]

The following table shows the dimensional specifications for the BS-bowl washers.

Fitting to BS-spherical node

 

KK 1

KK 2

KK 3

BS-bowl washer

 

BW 1

BW 2

BW 3

Outer dimension

[mm]

70

Inside diameter

[mm]

The inside diameter of the BS-bowl washers
depends on the used BS-connectors

     BS 1

BS 2 + BS 3

BS 4

     BS 5 + BS 6

     21

31

37

     43

Thickness

[mm]

12

Radius

[mm]

113

125

175

Weight

[kg]

0.154

0.161

0.180

e-M@il: info@bertsche-system.de