From size, floating, and pans - here are a few things concrete contractors should keep in mind about their power trowel ...

Too much floating is a common concrete pouring mistake that can weaken the surface by drawing up too much water and cement. After you smooth the slab with the bull float, water will “bleed ...

Slowly pour the concrete over the mold, stopping when you reach your desired thickness (¼-inch max). Let it dry for 21 days, and then sand until smooth. (F) Float: Your concrete canoe should ...

For large concrete placements using laser-guides ... Do not use a 4- to 5-foot bull float. A bull float can smooth the surface but it cannot perform the cut-and-fill process; and due to its ...

Once any drywall compound is dry, sand the shape as smooth as possible ... Mix the concrete and apply a ½- to 1-inch layer to the hull using trowels, floats, and your hands.

After the concrete is given a few weeks to harden, the team paints the canoe according to a theme — this year, it’s “Paddlers of Olympus,” inspired by Greek mythology.

A dozen universities entered the concrete canoe races held on a pond northeast of campus. Men, women and coed teams competed in both sprint and endurance slalom competitions. The University of ...