FLOOD04055 - Laserfiche WebLink

Home Browse Search

and practical skills which will be developed by the private concerns and intends to work with them, as well as with home and building owners, to develop the most practical and economical method to protect homes and build- ings from floodwaters. Test setup 69. The contractor had a simple, but logical, protective system com- posed of a fabric (Figure 55) (vinyl-coated nylon with special fungus inhibi- tors) embedded to some depth in the ground (Figure 56, schematic of embedded system) next to the house to reduce underseepage by creating a longer seepage path. The fabric was extended out of the ground and up the side of the house (Figure 55) to form a continuous water-resistant barrier. A trough-like con- tainer at ground level (Figure 57) was used to store the fabric. The perma- nent storage system for the fabric was very efficient because the lid to the container could be opened (Figure 58) and the fabric rapidly pulled up on the house and connected to permanently installed snaps (Figure 59). A drainage system was installed at the base of the cutoff barrier (Figure 56) to inter- cept and drain any underseepage into a sump (Figure 60). It was then pumped outside the protected area (Figure 61). 70. The prototype house (Figure 54) was located in Tulsa County, Oklahoma. It was in a Corps of Engineers project area and was subject to removal and salvage. To facilitate testing, the shrubbery and debris were removed from the perimeter. Installation of the system required a trench to be dug beside the footing to a depth of about 2 ft (Figure 56). After the digging was completed, the drain system was installed, as shown in Figure 56. A 4-in. perforated drainpipe was placed at the base behind the protective fabric. A filter system of rocks was placed over the 4-in. drainpipe. An adhesive was spread on the house wall at ground level to seal a 2 by 4 board to the house. The 2 by 4 was then attached to the house by drilled holes, inserts, and screws. 71. The protective fabric was positioned in the trench and on the house. A 1 by 4 board was placed against the fabric and attached to the 2 by 4. The storage compartment for the fabric was attached to the 1 by 4. Once the storage compartment had been attached to the fabric and to the house, the backfilling of the trench was begun. The fabric was tightly positioned against the foundation at all times as the backfilling and tamping was accomplished. The backfill was compacted in 6-in. layers to achieve a density 22