Heated fiberglass-reinforced plastic (FRP) forms have realized a major saving in concrete costs for a Boston firm using the FRP forms to build two additional levels onto the parking garage at Boston's Logan Airport. The forms are made of polyester resin reinforced with glass fibers. Wiring is installed in a heat chamber within the form structure. After placing, the electric current heats a void between the form and the heat chamber and cures the concrete rapidly and evenly. "At first the idea seemed fantastic," says John Ablondi, manager on the airport job. " The molder told me I could remove the forms within 20 hours after placing the concrete for the structural beams that support the weight of the building. Under the best weather condition, we leave wooden forms on for five days." "Initial cost of the system is high," Mr. Ablondi said, "We paid much more for the FRP forms than for conventional forms, but there are several areas that lowered the overall costs significantly. (1) We save a great deal of overall construction time with the 20 hour stripping. (2) We cut our working force in half. Instead of carpenters and a foreman, we are using nine men for on the job casting. (2) We cut our working force in half. (3) Weather is no factor. (4) The forms are long-lasting- even if they get scratched or gouged, they are easy to repair. (5) FPR forms are easy to handle. (6) For the exterior of the building, the architect specified a wood grain finsh. We've had it molded in the FPR forms. And (7) all in all, these add up to a substantial savings in concrete costs on the job.