5. Coursing heights are one of the more critical elements of the drawings. Dimensions such as bottom of brick (B.O. BRICK), top of brick (T.O. BRICK), or header, sill and panel heights, can be established from datums set at the finished floor or bottom of panels. These are easy for the installer to interpret and help avoid cumulative errors in establishing coursing heights. It is also useful to include partitioned dimensions whenever possible. Although this redundancy may clutter the drawing somewhat, the advantage of being able to establish framing sizes for openings, bands, etc. much more easily makes them worth it. 6. In panels with more than a few courses it is important to give intermediate coursing height check points. These are helpful to the installer. Without them he is left to establish his own control lines. When course heights are critical they should be gauged at least every 4’ vertically. Horizontally; a check every 8’ will do. 7. A bill of materials on each card is often helpful but certainly not necessary. If one is used it should at least include the complete brick count.
B. Engineering Considerations 1. Pullout tests
Ongoing testing has shown that the embedded thin brick’s performance is far superior to hand-laid or post- adhered applications. Pullout tests typically generate tensile strengths in excess of the concrete alone. This is due to the contribution of the enhanced bond produced by the coved joints acting in shear. The various grooved and dovetail configurations of some brick ad to their adhesion as would be expected, but are not necessary in order to achieve satisfactory results. In tests, pullout resistance has been achieved beyond 2,500 lbs/ modular size brick. 2. Prestress or post tensioning, (deflection criteria) VersaLiner® panels as long as 60’ have been prestressed with no effect to the brick. Nominal deflection will not cause brick to ‘pop’ out or crack. The brick will not crack without the concrete structure behind it failing. We do not recommend taking any extraordinary precautions in handling large panels other than those that would normally be employed. 3. Freeze thaw tests Freeze thaw testing, though rare, is generally undertaken by the panel producer when required by the customer. Testing has commonly shown that the brick decomposes prior to any bond failure between brick and concrete. Clay brick is slightly permeable and varies in weathering durability from producer to producer. Embedded brick that has been exposed to harsh freeze thaw environments since as early 1970s can be observed today in its original state of integrity in many areas of the US. 4. Module openings, corners & quirk joints. These drawings show various common details used in the VersaLiner® system. They are helpful as guidelines when working with the brick module. See examples, next page.
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