Standing Seam Metal Roof Canopy
Standing Seam Metal Roof Canopy
(OP)
I am currently designing a standing seam metal roof canopy. Yes, I did provide a wide rib steel roof deck below the standing seam roof, so no diaphragm issues. The support framing is structural steel (curved beams), on steel tube columns, on concrete piers and footings. It is a stand alone canopy at an amusement park.
My client (local public works engineer) is wondering if the summer heat will cause the steel roof deck (not the standing seam metal roof--it is able to slide on its support clips) to expand, resulting in failure of the deck welds. I am currently just showing standing seam directly on steel deck--perhaps I should provide rigid insulation, to prevent the hot standing seam roof from transferring heat to the steel deck? Seems strange, because this is an unheated structure.
My client (local public works engineer) is wondering if the summer heat will cause the steel roof deck (not the standing seam metal roof--it is able to slide on its support clips) to expand, resulting in failure of the deck welds. I am currently just showing standing seam directly on steel deck--perhaps I should provide rigid insulation, to prevent the hot standing seam roof from transferring heat to the steel deck? Seems strange, because this is an unheated structure.
DaveAtkins






RE: Standing Seam Metal Roof Canopy
RE: Standing Seam Metal Roof Canopy
RE: Standing Seam Metal Roof Canopy
If you were to get significant expansion due to changes in the ambient air temperature, wouldn't you also have to add insulation to the bottom of the deck since it would be exposed to the ambient air? (I assume the discussed above was to only add insulation between the deck and standing seam roof)
I have used exposed roof deck in warm climates and have not heard of this being a problem (typically used in industrial applications for shielding, canopy, or storage structures)
RE: Standing Seam Metal Roof Canopy
RE: Standing Seam Metal Roof Canopy
DaveAtkins
RE: Standing Seam Metal Roof Canopy
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Standing Seam Metal Roof Canopy