Experimental investigation on the steel standing seam roof systems subjected to wind uplift
By: Reddy, S. Ravikanth
.
Contributor(s): Jayachandran, S. Arul.
Publisher: Chennai CSIR- Strctural Engineering research Centre 2021Edition: Vol.48, Issue 04.Description: 255-264p.Subject(s): Civil Engineering | Standing Seam Metal Roofing | Wind Uplift | Rigid Purlin
In:
Journal of structural engineering (JOSE)Summary: Standing Seam Metal Roofing (SSMR) systems have advantages of
weather tightness, leak-proof performance, durability, and cost-
effectiveness. Codification of SSMR designs is quite complex due to
the interaction of several components. The design of supporting purlin
is also difficult when the resistance from sheeting is accounted for.
Since numerical models have limitations to capture this interaction,
experiment based empirical equations are the only way to design
these systems. Two types of profiles namely Flexlok® and Tracdek®
profiles are widely used in practice. In the former, the roof sheets
under upward wind depend on the clamping force between the sheet
profile and a clamping device called a halter. The latter gets its
strength from the integral folding of the sheet with the mechanical
clamping device. Although these two systems have different load
carrying mechanisms, the behavior of both has an impact on the
secondary load carrying systems such as purlins. Unless this
interaction of the sheeting and the secondary frame systems are
experimentally evaluated, the design does not become rigorous. This
paper presents experimental studies on the interaction behavior of two
types of SS MR systems subjected to wind uplift. A special vacuum
chamber is fabricated as per specifications in ASTM E1592 - 05(2017)
for creating air-pressure differences. The various modes of failure in
these two types of roof systems are captured in the experiments
which will influence the overall behavior of the roof systems.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
|---|---|---|---|---|---|---|
Articles Abstract Database
|
School of Engineering & Technology (PG) Archieval Section | Not for loan | 2022-0266 |
Standing Seam Metal Roofing (SSMR) systems have advantages of
weather tightness, leak-proof performance, durability, and cost-
effectiveness. Codification of SSMR designs is quite complex due to
the interaction of several components. The design of supporting purlin
is also difficult when the resistance from sheeting is accounted for.
Since numerical models have limitations to capture this interaction,
experiment based empirical equations are the only way to design
these systems. Two types of profiles namely Flexlok® and Tracdek®
profiles are widely used in practice. In the former, the roof sheets
under upward wind depend on the clamping force between the sheet
profile and a clamping device called a halter. The latter gets its
strength from the integral folding of the sheet with the mechanical
clamping device. Although these two systems have different load
carrying mechanisms, the behavior of both has an impact on the
secondary load carrying systems such as purlins. Unless this
interaction of the sheeting and the secondary frame systems are
experimentally evaluated, the design does not become rigorous. This
paper presents experimental studies on the interaction behavior of two
types of SS MR systems subjected to wind uplift. A special vacuum
chamber is fabricated as per specifications in ASTM E1592 - 05(2017)
for creating air-pressure differences. The various modes of failure in
these two types of roof systems are captured in the experiments
which will influence the overall behavior of the roof systems.
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