My grandmother lives in Pierre Part, LA which is in the line of fire should they open up the Morganza Spillway. I expect and a foot of water to reach her door. How should I go about sandbagging her house? Do i go for just the doors and low windows or do I build a makeshift floodwall. Believe it or not, I have never had to lay down sandbags and I don't know how to lay them out to prevent flood damage. water will come from 3 sides. Any helps or tips will be appreciated and pictures will be provide once it's done, just for shits and giggles.