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STEEL AND TEAK PERMANENT BENCH - PRODUCT 5

V. Ryan © 2008

 

This is a permanent bench. It is manufactured with a robust steel frame and teak or teak substitute wood. The teak boards are screwed or bolted on to the steel frame. The steel frame is bolted permanently to concrete blocks. It is extremely strong and is not designed to be moved or transported.

What are the disadvantages of this type of picnic furniture? You may consider the following key words/phrases when writing your answer;
 

WEIGHT - MATERIALS - TRANSPORTABILITY - RECYCLING - DESIGN - ERGONOMICS
   
 
 
 
 
 
 
 
 
   

 

 
MANUFACTURING PRODUCT 5
   

The mild steel tube and flat strip are cut to length using a power/machine hacksaw. This thickness of material cannot realistically be cut by hand.

A hand file is used to smooth all the sharp edges. This can be followed by emery cloth (if required). This will smooth the steel further.

The steel frame and backrest for the bench formed by heating the area that is to be shaped with a brazing torch and ‘bending’ it on a sturdy steel jig.

Holes for screws and bolts are drilled and the two side frames are gas welded together (Oxyacetylene gas mixture). The steel could also be brazed or MIG welded or even welded by electric arc equipment.

The steel frames are then galvanise (zinc coated). This helps prevent rust. Steel is galvanised through a chemical process. This helps prevent rust and corrosion. The steel is given a zinc coating and as zinc does not rust - rust cannot take hold.

The zinc coating is added to the steel by submerging it in molten zinc. The zinc becomes part of the steel outer layer.

 

The frames are then primed and spray painted with a weather resistant paint.

The bench is then transported to a permanent picnic site and assembled. It is permanently bolted to the concrete foundations. During the assembly process galvanised nuts and bolts are used. Again, this helps prevent rust.

 
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