The standard length of sidewall beam is 12.6 m and mass with ground coils is 20 tons. Position of sidewall beam is able to be aligned even if a displacement of infrastructure occurs because sidewall beam is separated from infrastructure at the bearing. Sidewall beams are produced at the field factory and ground coils are attached at the same factory. Then an exclusive machine transports beams up to the site and sets them on the bearings installed on infrastructure. Vertical alignment is controlled when sidewall beams are produced and bearings of beam are produced.
Lateral alignment is controlled when sidewall beam is produced and set at the site.
Sidewall beams are produced at the wayside field factory. In the factory, two sets of abutments on which 4 beams can be produced at the same time and a hydraulic jack for prestressing force is provided. Like panel type, formworks of beam are made precisely and rigidly. To prevent concrete chipping, urethane elastomer is applied on the surface of ground coil side formworks like direct-attachment type. And to ensure the accurate formwork assembling and smooth demolding, the ground coil side formwork is supported by 10 hydraulic jacks.