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duckboards were placed over a sump
a hole you poo into and where they sleep
Duck boards were usually placed over the sumps but they weren't always too usefull, they barely stopped rthe sump from reaching the soldiers and it wan not at all uncommon to get trench foot.
A duckboard
A Sump.
drainage and duckboards :33<
drainage and duckboards :33<
drainage and duckboards :33<
Duckboards were basically wooden planks, nailed to runners and placed on the bottom of trenches, to allow troops to walk over the mud, which was slippery and often deep. It also helped keep feet dry to prevent trenchfoot (tissue necrosis due to prolonged immersion).
It keeps the water that is pumped out from flowing back into the sump when the pump shuts off. Most sumps discharge several feet above the hole the pump sits in. If there was not a check valve the sump would just refill and pump out the water over and over.
For best drainage results, the sump pump should be placed below the rest of the floor. It should be set up to drain outside the house. The hose should be far enough away from the window that it does not leak back inside.
A dry sump is not submerged under water as a wet sump is. a dry sump uses a resivoir to hold the oil much like the brake fluid. a wet sump has the oil sump bolted to the bottom of the engine block :D