Scientific American is the authority on science and technology for a general audience, with coverage that explains how research changes our understanding of the world and shapes our lives. First ...
Let’s talk concrete! The good news is that you can pour the concrete in water. Professionals do this all the time. You just have a small standing puddle in your basement and that won’t be a problem.
Q: I’m renovating a basement bath during winter while things are slow at work. When I removed the old shower insert, I discovered a large area of crumbling and missing concrete. Because of the high ...
Diagram: Screeding the pad: With one person on each side of the board, work the board across the final layer of concrete to smooth the surface. You can rent or buy gas-or electric-powered cement ...
Whether your project begins with pouring concrete or it’s the finishing touch, strong cement starts at the mixing stage. Making concrete is simple in theory—you simply combine cement with water and an ...
Twenty minutes north of Duluth at the Island Lake Dam Recreation Area, rushing water is released into the Cloquet River on one side of the dam, while on the other two divers work 30 yards underwater ...
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