Roof trusses qualified under part 9 of NBC

Roof trusses for building of 3 stories or less in building height , having an area not exceeding 600 m² (6000 ft²),  having a clear span between two bearing wall not exceeding 40 ft and used for major occupancies classified as 

a) Group C, residential occupancies such as:

             (Apartments),  (Boarding houses), (Club, residential), (Colleges, residential),

             (Convents), (Dormitories), (Hotels), (Houses), (Lodging houses), (Monasteries),

             (Motel), (Schools, residential) 

 

b) Group D, business and personal services occupancies such as:

              (Banks), (Barber and hair dressing shops), (Beauty parlours), (Dental offices),

              (Dry cleaning establishment, self service, not using flammable or explosive

               solvents or cleaners), (Laundries, self-service), (Medical offices), (Offices),

              (Police stations without detention quarters), (Radio stations), 

              (Small tool and appliance rental and service establishments)

 

c) Group E mercantile occupancies such as:

               (Department stores), (Exhibition halls), (Market), (Shops), (Stores), 

               (supermarkets).

 

d) Group F, Division 2 medium and low hazard industrial occupancies) such as:

               (Aircraft hangers), (Box factories), (Candy plants), Cold storage plants)

               (Dry cleaning establishments not using flammable or explosive solvents or

                cleaners), (Electrical substations), ( Factories), (Freight depots), 

               (Helicopter landing area), (Laboratories), (Laundries, except self-service),

               (Mattress factories), (Planning mills), (Printing plants), ( Repair garages),

               (Salesrooms), (Service stations), (Storage rooms), (Television studios not

                 admitting a viewing audience), (Warehouse), (Wholesale rooms)

               (Woodworking factories), (Workshops)

 

e)   Group F, Division 3 medium and low hazard industrial occupancies) such as: 

                (Creameries), (Factories), (Laboratories), (Power plants), (Salesrooms), 

                (Sample display rooms), (Storage garages, including open air parking

                 garages), (storage rooms), (Warehouse), (Workshops).