Yun Chong today talks with everyone about building a concrete nail Construction points.
1. The depth of penetration: 20-30mm for concrete; 30-50mm for masonry bricks; 1-3.5 mm for thin steel plate.
2, It is best to use nippers to clamp a steel nail to beat, or the first nail to become a steel nail on a small wooden pad, and then nailed in the collective, freeze the nails with bare hands, should prevent the finger from pain.
3, the force should be positive when pressed, it is best to use a large hoe (or hammer), the force of the blow is large, the number of blows as small as possible, the last time the depth of the nails should be deeper.
4. When driving high-grade nails (200 # and more) of concrete, If conditions exist, drill a hole 1 / 5-1 / 3 deep from the depth of the concrete nail
5. Prevent a particular nail from jumping by tapping.