Precast concrete sandwich panels and system for constructing panels

A precast concrete sandwich panel, comprising in combination:

• a lower wythe with reinforcement material embedded therein;
• an upper wythe with reinforcement material embedded therein;
• an insulating layer formed between the lower wythe and the upper wythe;
• at least one channel having a base wall, a pair of opposed side walls and a pair of rods permanently affixed to an outer surface of the opposed side walls of the channel, and being oriented during construction of the panel, and whereby the rods being of a sine-wave shaped pattern defined by peaks spaced at a regular interval and with peak-to-peak amplitude greater than the insulating layer and mechanically joined with the lower wythe and the upper wythe;
• and
• at least one the lift insert mountable in the at least one channels comprising a pair of columns having base feet integrally formed on the end of each column, and whereby the base feet mount on a pair of platforms.