Kyle@reynoldsengineerings
Civil/Environmental
- Nov 22, 2024
- 2
Good Afternoon All,
I'm designing a new construction building that needs to be dry floodproofed. Per the NFIP Technical Bulletin 3, I'm trying to determine the seepage does not exceed 4" within the 24 hour period. I'm using the calculations from Appendix B which uses the test sample H but they do not fill every cell like we would be proposing. I tried to look up some weatherproofing liquid membranes specs for seepage (ft^3/ft-hr or gal/ft-hr) for Drylok and Semco but it is not provided. Any suggestion on how to determine the seepage for membranes on CMU walls? Or if there is a product that is good for this application and provides the information I need to backcheck the calculations.
On another note, do I have to determine the seepage through the total length of what I assume to be all the motor joints between every block. I would love to say we do solid poured wall but we can't do that due to limited space restrictions.
Thank you! Happy Friday!
https://www.fema.gov/sites/default/files/documents/fema_technical-bulletin-3_1-2021.pdf
I'm designing a new construction building that needs to be dry floodproofed. Per the NFIP Technical Bulletin 3, I'm trying to determine the seepage does not exceed 4" within the 24 hour period. I'm using the calculations from Appendix B which uses the test sample H but they do not fill every cell like we would be proposing. I tried to look up some weatherproofing liquid membranes specs for seepage (ft^3/ft-hr or gal/ft-hr) for Drylok and Semco but it is not provided. Any suggestion on how to determine the seepage for membranes on CMU walls? Or if there is a product that is good for this application and provides the information I need to backcheck the calculations.
On another note, do I have to determine the seepage through the total length of what I assume to be all the motor joints between every block. I would love to say we do solid poured wall but we can't do that due to limited space restrictions.
Thank you! Happy Friday!
https://www.fema.gov/sites/default/files/documents/fema_technical-bulletin-3_1-2021.pdf
