A FLOAT UNIT AND PONTOON HAVING THE SAME

摘要

PURPOSE: A buoyancy member and a pontoon bridge for equipping the same are provided to maintain the function of a damaged buoyancy member by an external shock and to resolve problems for frequently replacing a buoyancy member. CONSTITUTION: A buoyancy member(10) comprises a plastic case(10A) and foamed polystyrene for filling into a case. The foamed polystyrene comprises the following steps for filling inside the case: filling foamed polystyrene which is primarily foamed at 2-3mm of diameter into the case; forming a plurality of outlets(13) with 2mm or smaller diameter on the case; secondarily foaming steam into the case through an inlet(12) and an insertion hole(14); and sealing the inlet, insertion hole, and outlet.