what size wood for concrete forms

Best answer

As an example, a 1X4 pine board is usually stiff enough to support a 4 inch (10.2 cm) concreteplacement (pour), where an 8 to 12 inch (20.3 to 30.5 cm) slab thickness will require 2 inch (5.1 cm) dimension lumberof a width equal to the height. To insure ease of forming, select straight, flat lumberwith minimal knots at the lumberyard. 4

People also ask

  • What kind of wood is used to make concrete forms?

  • Straight, flat lumber without knotholes provides the best concrete forms. Thick concrete pours of greater than 8 inches may require a second round of stakes set a couple of feet behind the concrete form with kickers nailed to the bottom of the rear stakes and the top of the form stakes to provide additional stability.

  • Can plywood be used for concrete-forming?

  • Nearly all types of plywood panels can be used in concrete-forming, from common roof and wall sheathing to sanded panels. APA Plyform panels, however, are specifically designed to withstand the wear-and-tear of repeated concrete pours, as well as to provide a smoother and more consistent finish to the concrete鈥檚 surface.

  • Why choose wood for concrete framing?

  • When it comes to pouring concrete, everything starts with the forms. Ensuring your concrete forms are both accurate and strong will go a long way toward a finished project that will stand the test of time. For ease of use and versatility, it’s hard to beat wood as the concrete framing material of choice.

  • What is the best material for building concrete forms?

  • Plywood is the best material for building concrete forms because it retains its shape and integrity following prolonged exposure to wet concrete. Cut OSB panels tend to swell on exposure to water. Plyform panels are the best choice since they鈥檙e specially engineered for concrete forming.

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