Ditch Check / Energy Dissipater
The 12 inch diameter tubes are shipped compressed and buckled together.
When the compressed tubes are unbuckled, the tubes automatically expand to their full six foot length . Each tube is kept rigid with an enclosed spring.
When the ends are snapped together they form long continuous fluid control barriers. Anchoring is simple as the barriers are easily held in place with common blanket staples through the attached flap or by shoveling gravel on the flap in frozen ground conditions.
Canadian Patent Pending
#2,495,976