Live demo test by Wall of Wind and RAPID EFs, May 17

[announce at designsafe-ci.org]

*Live broadcast of a demonstration test planned by the NSF NHERI Wall of
Wind and RAPID Experimental Facilities*

*Date: May 17, 2018*

*Time: 11am-12pm*


The NHERI Wall of Wind (WOW) and RAPID Experimental Facilities (EF) are
jointly hosting a user workshop on May 17, 2018. A live demonstration test
is planned for this workshop to showcase the capabilities of each facility
as well as the complementary nature of the two EFs. To fulfill their
commitment to community outreach activities that promote science,
technology, engineering and mathematics (STEM), the NHERI WOW and RAPID EFs
are broadcasting this demonstration live.

If you are interested in watching this demonstration, please visit
https://fiu.designsafe-ci.org/events/watch-live/

*Model Description:*

A large-scale model building will be exposed to hurricane-force winds to
assess the performance of roofing and cladding materials in such extreme
wind events. The building is of wood-frame construction with exterior
plywood walls covered by vinyl siding. Internally, the building is finished
with 1/2” drywall painted with white primer. The gabled-roof of the
building is covered with asphalt shingles. There are two single-hung
windows in place among which one is impact-rated. The model building is
anchored to the 16 ft diameter turntable at the Wall of Wind Experimental
Facility.

*Procedure:*

*Pre-testing activities:* The drywall interior will have been wetted in a
distinct pattern two days prior to testing. One day prior to testing, the
RAPID team will complete a baseline pre-scan of the structure exterior
using the Leica BLK360, a portable terrestrial lidar scanner. A thermal
imaging scan of the interior will be captured using the BLK360 and the Flir
Pro One to detect interior drywall wetting.

*Testing activities (live demonstration):* The wind speed will increase
gradually and the turntable will re-orient to alter the approach wind
direction. Rain droplets will be added to the flow to improve flow
visualization and create potential wind-driven rain water intrusion.

*Post-testing activities:* Upon completion of the wind testing, damage to
the building cladding and roof will be visually inspected. The RAPID team
will conduct a post-scan with the BLK360 lidar to quantify physical
exterior damage. A thermal scan will be conducted with the BLK360 and Flir
Pro One on the interior to detect wind-driven rain water intrusion. Post
processing of the lidar scans will be conducted in the afternoon. Remote
live broadcast viewers will be able to access a presentation of results on
DesignSafe.



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