Lindapter® Product Range - Steelwork Fixings Loads & Specifications

Steelwork Fixings Loads & Specifications
TENSILE LOADING

In the majority of Lindapter® applications the connections are subject to a tensile load. This type of loading transmits a force parallel to the centre line of the bolt shank and therefore applies the load to the contact point on the Lindapter.

The allowable tensile load which can be applied is dependant on the bolt size and grade used (see Data Tables).

In assemblies which consist of two or more bolts the load value in the Data Tables should be multiplied by the number of bolts to give the Safe Working Load for the assembly.

Ref : 10072

Ref : 10078

SHEAR LOADINGS
In a shear application the Safe Working Load of the assembly is determined by the bolt grade and diameter because the force is resisted by the cross sectional area of the bolt shanks. Therefore it is recommended that reference is made to the bolt and nut manufacturer's technical data to ascertain a Safe Working Load per bolt.


Ref : 10073

FRICTIONAL LOADING

In a frictional application the force applied is at 90° to the bolt shank. The point at which slip occurs is dependant on the condition and finish of the steelwork, the coating on the Lindapter and the grade of bolt. Because of these variables published frictional loads are based on electro-zinc plated Lindapters clamping to painted steelwork which gives the lowest coefficient of friction.

The frictional Safe Working Load shown in the Data Table is a value based on a two bolt connection which is the minimum that can be used in a frictional assembly. This should be multiplied for the number of bolts used as appropriate.

Ref : 10074

Ref : 10079

COMBINED LOADS
Applications in which Lindapters can be used may subject the connection to more than one load condition. When this occurs the resulting forces produced by the load must be calculated to determine the bolt sizes required.

Ref : 10075

This application will apply tensile and frictional forces to the Lindapters.
COMPRESSION LOADING
In compression applications the force applied to the connection is transmitted direct to the supporting section and not to the Lindapter connections. However, if there is a gap between the surfaces the buckling strength of the supporting rods must be considered.

Ref : 10076

Ref : 10081

TORQUE
Each bolt diameter has a recommended Torque value stated in the Data Tables, which must be applied to achieve the Safe Working loads quoted. The Torque quoted should not be reduced as this would lower the Safe Working load. It is suggested that lightly oiled bolts are used to help attain the Torque values.

Ref : 10077

Note:All loads quoted in this section have been obtained from full scale physical tests and include a factor of safety of 5:1.

Frictional load (slip) is defined as the constant load at which relative movement between clamped components exceeds 0.004", after bolt hole clearances have been taken up.

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