At this point instead of relying solely on the side forms temporary pipe, or rails can be used. Even at fifteen feet you will need three people working the screed.
If you are going to be pouring a large slab with a width of 15’ feet or greater it becomes difficult to strike off this much concrete. Frequently two passes with the screed is necessary to achieve desired grade. Remove excess concrete with a flat shovel or a hoe-like tool called a come-along. To fill in low points keep approximately 1 inch of concrete rolling in front of the straight edge. The screed should be tilted slightly toward the operator so that there is a single cutting edge. A straight edge is moved across the concrete with a sawing motion and progresses forward a short distance with each movement. The screed should be 1 1/2’ – 2’ longer than the slab is wide so that it always rides on the forms.
Screeding is the process of cutting off excess concrete to bring the top surface of the slab to proper grade. “Screeding” is most commonly used word to describe this process in this area. Because the tool is called a screed this process is often referred to as screeding. A screed is the tool used to accomplish this task often made of wood (2” x 4” Lumber), magnesium, or aluminum. Strike off operation is key the achieving a true plane surface. In this section we will take you step-by-step through the process. Others will require a broomed, troweled or floated finish. Some surfaces may require just strike off and screeding to proper contour and elevation. These are considered advanced finishing techniques and will only be covered briefly in this section. You can finish your concrete in many ways, including color tinting, texturing, and Patterned-stamped finishes. Visible concrete slabs used for driveways, patios, etc.
#Broom finish concrete with how to#
How To Lay Pavers, Brick, Patio Stone and Stone Pavers.High Strength 8” Concrete Recessed Lintels.
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