Mid State Filigree, Filigree Wideslab method: With the Filigree Wideslab Method, the construction of a concrete deck is divided into two separate operations: First, Filigree Wideslab units are prefabricated off-site. They consist of precast concrete panels that are reinforced with the required bottom steel. Then, these panels, used as forms, are combined with the balance of the reinforcing steel ...