Using sandbags is a common and effective method for creating temporary barriers to divert or contain floodwaters. Properly placed sandbags can significantly reduce damage to property.
Based on the provided reference, the process focuses on the correct placement technique after the bags have been partially filled.
Step-by-Step Guide to Placing Sandbags
Follow these key steps to effectively use flood sandbags as a protective barrier:
- Prepare the Area: Before placing any bags, it is crucial to prepare the ground. Remove any debris from the area where bags will be placed. This ensures the bags can form a tight seal against the surface, preventing water from seeping underneath.
- Prepare the Bag: For optimal placement and flexibility, sandbags should be partially filled. Once partially filled, fold the open end of the unfilled portion of the bag to form a triangle. This prepares the bag for sealing.
- Place the Bags Correctly: When building a barrier, the orientation of the bags is vital for stability and effectiveness. Place the partially-filled bags lengthwise and parallel to the direction of flow. Laying them lengthwise creates a stronger, more continuous barrier. Placing them parallel to the flow helps direct water away.
- Secure the Barrier: To complete the placement of each bag and ensure a sealed barrier, tuck the flaps under, keep the unfilled portion under the weight of the sack. This action secures the folded end, preventing sand from escaping and helping the bag mold into place against the adjacent bags and the ground, creating a solid wall.
Using partially-filled bags (typically 1/3 to 1/2 full) allows them to be shaped to create a tight seal when tamped or compressed, unlike overfilled bags which are rigid and leave gaps.
For more detailed information on flood preparedness and sandbagging techniques, you can refer to resources like the City of Madison's guide: https://www.cityofmadison.com/flooding/during-a-flood/how-to-sandbag.
