What is recommended as a preferred distance from the architectural precast panel to the edge of slab?
The slab edge location should be clearly defined on the contract documents. It is recommended that a 1-1/2 inch dimension be allowed between the edge of slab and the precast panel to account for tolerance both in the slab as well as the precast. Pay particular attention to slab edge conditions along skewed or curved building edges as these areas are often the areas that cause the most difficulty during layout.