Connection design joining techniques

P(l) This section covers the design of mechanical joints where at least one of the primary components to be joined is made of glass FRP. Such joining techniques include fastener connections, friction joints (shear loads), contact joints (direct loads), threaded joints, strap joints and joints incorporating embedded fasteners (see 5.i.4 P(2)). 

P(3) The design approach for joining techniques for other mechanical connections shall be by testing. The principles of the design and verification approach shall be as described in 7.3 and the partial safety factors shall be as given in S.i.iO P(3). 

PVC pipes can be solvent welded but mostly they are joined by mechanical compression or push-fit connectors. Various designs exist and the most successful are capable of connecting any type of pipe within specified diameter range. Some mechanical fittings for softer materials such as PE use compression of the pipe wall into grooves as a means of sealing the joint. This technique is unsuited to harder plastics such as PVC. The multiple application connectors rely upon compression of a separate elastomeric seal. 

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