Bibliographic Details
| Title: |
Laboratory tests to understand tephra sliding behaviour on roofs |
| Authors: |
Sara Osman, Mark Thomas, Julia Crummy, Anna Sharp, Steve Carver |
| Source: |
Journal of Applied Volcanology, Vol 12, Iss 1, Pp 1-16 (2023) |
| Publisher Information: |
BMC, 2023. |
| Publication Year: |
2023 |
| Collection: |
LCC:Environmental protection
LCC:Disasters and engineering |
| Subject Terms: |
Ash fall, Roof loading, Building damage, Volcanic hazards, Eruption impacts, Environmental protection, TD169-171.8, Disasters and engineering, TA495 |
| More Details: |
Abstract Following explosive eruptions, loading from tephra fall deposits can lead to roof collapse. However, the load may be reduced significantly by tephra sliding on pitched roofs. We present small-scale laboratory tests to investigate tephra sliding behaviour on metal, fibre cement sheet and tile roofing. We tested 10–30 cm thicknesses for dry and wet deposits of pumice, scoria and basaltic ash. We found that tephra did not slide on roof pitches ≤ 15° for coarse-grained deposits and ≤ 12° for dry ash. Thin deposits of wet ash were stable at pitches ≤ 30°. In addition, tephra was mainly shed on pitches ≥ 32° for metal roofs and ≥ 35° for fibre cement and tiles. Using these results, we have produced an initial set of sliding coefficients for tephra for simply pitched roofs that can be used to help prioritise roofs for clearing during an eruption and assist in designing roofs to withstand tephra fall. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2191-5040 |
| Relation: |
https://doaj.org/toc/2191-5040 |
| DOI: |
10.1186/s13617-023-00137-2 |
| Access URL: |
https://doaj.org/article/1de4c02c86f34c2e8ac79d1a48d5a2cb |
| Accession Number: |
edsdoj.1de4c02c86f34c2e8ac79d1a48d5a2cb |
| Database: |
Directory of Open Access Journals |
