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Simply put, post-tensioning is a method of reinforcing concrete and masonry structural elements. In a way, it is a method of "squeezing"concrete such that it increases it's strength and makes the concrete stronger in useful ways. Unitized post-tensioning is where we post-tension a single unit. We then bolt the individual post-tensioned unit together to creat combined strength from each unit.
Bolt-A-Blok construction is stronger, faster and more economical to build. There is little waste of materials. Bolt-A-Blok uses no water or mortar. No more hauling drums of water to each job. Forget the sand.
In place of motar [glue] the Bolt-A-Blok system uses continuously connected steel to compress the blocks and bolt them together. With this system, Bolt-A-Blok is extremely strong.
No, the torque requirements are very low for all general uses of Bolt-A-blok.
Bolt-A-Blok can be put together by both the skilled and unskilled.
According to independent tests, Bolt-A-Blok meets most of the major builing codes in the United States.
No. Bolt-A-Blok has no mortar to freeze, break or have strength reduced. Bolt-A-Blok is not weather dependent.
With ordinary block and mortar walls, I have seen builders use a lot of exspensive hardened fasteners that must be put in pre-drilled holes in the concrete. What do you do differently with Bolt-A-Blok ?
The new Bolt-A-Blok wall uses door and window anchors. These economical anchors can strongly attatch siding, drywall, doors, and windows. Also, by using the Bolt-A-Blok Ledger Bloks, we can economically attach floors and ceilings.
No. The steel and concrete expand and contract at exactly the same rate. An engineer descibes it as "concrete and steel having identical coefficients of expanion."