AERZ civil structural consulting Inc. had prepared a construction inspection report for steel building near Okotoks, Alberta. The building is 70 feet long by 40 feet wide by 24 feet eave height.
Also we prepared drawings for the mezzanine in the building after checking the as built conditions and checking the current mezzanine structure design is safe and satisfy the Alberta building code structurally, CSA steel design standards CSA-S16, concrete design standards CSA-A23.3, Engineering design in wood standard CSA-O86 and Canadian foundation manual. There were design changes that were not incorporated in the old design drawings.
There was a need to study and check the interaction between the mezzanine and the steel building that was laterally supporting the mezzanine. Therefore a STAAD PRO model was prepared for this previous reason.
3D STAAD PRO model after addition of new make up air conditioning unit of a commercial building in NE of Calgary. The open web steel joists are HSS steel sections with bracing of bottom chords at the middle and end of roof trusses. The roof was safely capable of carrying the new air conditioning unit.
AERZ civil structural consulting Inc. has done structural assessment of a commercial unit roof at south east Calgary. The owner of the commercial wanted to add a new heavy HVAC unit on top of the roof. The structural assessment found that the roof will not be safe by 25% if the HVAC unit will be installed on the roof (25% over stressed than allowable design values). The roof trusses are wood steel open web trusses with steel tube sections as vertical web members and wooden upper and lower horizontal chords held together by pins. An Engineering solution was provided to owner to support the roof trusses carrying the HVAC unit.
We have provided a design modification for a roof of a commercial building in south east of Calgary. The roof span consists nearly 50 feet span that is supported by open web wooden steel trusses with pin joints connecting the steel vertical tubes to the wood upper and bottom chords of trusses. The roof is suppose to carry a new heavy high volume air conditioner unit (HVAC) that can not be carried by the old roof trusses.