Metal beams or trusses supporting light-weight roofing system e.g. corrugated metal or plywood sheets over steel rafters or purlins.

RME1_India_Brzev_1

Curved steel beams supporting corrugated steel sheet roofing, Mumbai, India (S. Brzev)

Steel trusses (open web steel joists) supporting corrugated steel roofing 1, Canada (S. Brzev)

Steel trusses (open web steel joists) supporting corrugated steel roofing, Canada (S. Brzev)

Steel trusses (open web steel joists) supporting corrugated steel roofing 2, Canada (S. Brzev)

Detail of steel trusses (open web steel joists) supporting corrugated steel roofing, Canada (S. Brzev)