MOVABLE SCAFFOLDING SYSTEM C«ng nghÖ thi c«ng b»ng ®μ gi¸o v¸n khu«n di ®éng Overhead MSS Underslung MSS Overhead MSS - Components FRONT & REAR NOSES MAIN GIRDER TRANSVERSE TRUSS LAUNCHING WAGON PIER SUPPORT FORMWORK TENSION BARS Overhead MSS - A typical construction cycle After concreting, curing and tensioning of cables, the Main Girder and the Transverse Trusses are lowered by the main jacks at the rear and front Pier Supports. After concreting, curing and tensioning of cables, the Main Girder and the Transverse Trusses are lowered by the main jacks at the rear and front Pier Supports. The Main Girder is now resting on the launching wagon. The Formwork is disconnected from the Tension Bars. Overhead MSS - A typical construction cycle After concreting, curing and tensioning of cables, the Main Girder and the Transverse Trusses are lowered by the main jacks at the rear and front Pier Supports. The Main Girder is now resting on the launching wagon. The Formwork is disconnected from the Tension Bars. The Formwork is now lowered and the MSS is in the launching position. Overhead MSS - A typical construction cycle After concreting, curing and tensioning of cables, the Main Girder and the Transverse Trusses are lowered by the main jacks at the rear and front Pier Supports. The Main Girder is now resting on the launching wagon. The Formwork is disconnected from the Tension Bars. The Formwork is now lowered and the MSS is in the launching position. Overhead MSS - A typical construction cycle After concreting, curing and tensioning of cables, the Main Girder and the Transverse Trusses are lowered by the main jacks at the rear and front Pier Supports. The Main Girder is now resting on the launching wagon. The Formwork is disconnected from the Tension Bars. The Formwork is now lowered and the MSS is in the launching position. Overhead MSS - A typical construction cycle The MSS is ready for launching. The launching operation to the next concreting position is to be carried out. NOTE The first span is usually 0,8 x max. span. The following pours will cantilever by 1/5 of the span lengths. “0,8 x L” “L” “L” Overhead MSS - A typical construction cycle The MSS is ready for launching. The launching operation to the next concreting position is to be carried out. Overhead MSS - A typical construction cycle [...]... and rigged into place The Suspension Bars are adjusted, and the MSS is now ready to be raised into the concreting position However, no Pier Support will be available at the rear end of the Main Girder this time A Rear Support is rigged in place, and will provide the lifting of the Main Girder by means of the two rear hydraulic main jacks “0,2 x L” Overhead MSS - A typical construction cycle The MSS . MOVABLE SCAFFOLDING SYSTEM C«ng nghÖ thi c«ng b»ng ®μ gi¸o v¸n khu«n di ®éng Overhead MSS Underslung MSS Overhead MSS - Components FRONT. and front Pier Supports. The Main Girder is now resting on the launching wagon. The Formwork is disconnected from the Tension Bars. Overhead MSS - A typical construction cycle After concreting,. and front Pier Supports. The Main Girder is now resting on the launching wagon. The Formwork is disconnected from the Tension Bars. The Formwork is now lowered and the MSS is in the launching