Doors and windows with a nail installed in the cement brick, is it necessary to have to nail on the cement brick, or as long as there are a few pieces in the cement brick, the other can be nailed to the red brick? Do you only need to nail on the concrete? More
Specification expressly prohibits the use of nail fixed doors and windows, and should be fixed with expansion bolts. Do the project supervision should be clear.
Now some local standards and acceptance specifications have been banned with a nail fixed window frame, whether it is concrete or brick wall. Drill holes should be used for expansion screws.
With the installation of doors and windows, the nail must be fixed on the concrete structure, is strictly prohibited in the masonry fixed, even if your block is made of concrete is not OK! If you can not be fixed in the concrete structure, you can not use the way to nail the door frame frame fixed, but should be used door and window frame embedded or indwelling embedded parts of the way to install.
