HD 1000 : 1998	BS 1139 Metal Scaffolding Part 5 : 1990 Specification for materials, dimentions, design loads and safety requirements for service and working scaffolds made of prefabricated elements.

	BS 729	Specification for black bolts, screws and nuts,hexagon and square, with B.S.W. threads, and partly machined bolts,screws and nuts,hexagon and square, with B.S.W. or B.S.F. threads
	BS 1139	Metal scaffolding
	BS 1139 : Part 1	Tubes
	BS 1139 : Part 1 : Section 1.1	Specification for steel tube
	BS 1139 : Part 2 :	Couplers
	BS 1139 : Part 1 : Section 2.1	Specification for steel couplers, loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes
	BS 3571	MIG welding
	BL 4360	Specification for weldable structural steels
	BS 6681	Specification for malleable cast iron