Bathroom Sunken Space for pipings and other Plumbing Works. Though it is not very common these days, yet this practice helps us in easy repair works in case of blocks and also to add extra fittings in the future.
Water Rocket: The combination of water, compressed air, and a plastic soda bottle serves as a great source of propulsion for a water rocket. Alternate way (without tape) to fix up those water bottle rockets. by elsa