1 MOVABLE SCAFFOLDING SYSTEM MSS - Moving Scaffolding System Span length 15 - 80 m Usual Total Length 500m – several km’s Usual cycle time / span 6 – 10 days 2 Our strong technical support team can offer services at various levels: The Movable Scaffolding System - MSS: Complete or partial delivery • design, know-how & construction engineering • steel structure • hydraulic equipment • launching equipment • special equipment Consultancy & supervision • experienced supervision and consultation during fabrication, assembly & operation • design, know-how & construction engineering • Feasibility studies 3 MSS - Moving Scaffolding System The MSS was first designed in close co-operation with Norwegian contractors in the 1970's. The system has since then been developed and successfully used in various major bridge projects in Scandinavia and world wide. The design of our advanced equipment has been improved and optimized over the years, based on our wealth of experience from over 100 projects. The system is light weight, easy to assemble, practical in design, supported by internationally known hydraulic and cranage systems, and most importantly, efficient in operation. Strukturas supplies two types of MSS: • Overhead MSS • Underslung MSS 4 Overhead MSS 5 The development of our cost-effective system over the years, stems from the need to reduce the high costs of construction manpower in Norway. Today, our MSS for cast-in-situ bridges can offer many cost-saving advantages to your bridge construction projects, through: Overhead MSS for the construction of Cast in-Situ Bridges • optimized design • ease of assembly • efficient operation A quick, reliable and economical solution for modern bridge construction 6 Overhead MSS The MSS can also easily be adapted to any bridge cross section (single box, double box, double T, etc.) and span configuration. This flexibility provides the contractor the opportunity to re-use the equipment from one project to another. 7 Overhead MSS - Components FRONT & REAR NOSES MAIN GIRDER TRANSVERSE TRUSS LAUNCHING WAGON PIER SUPPORT FORMWORK TENSION BARS 8 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. 9 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 10 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 [...]... by means of the two rear hydraulic main jacks “0,2 x L” Overhead MSS - A typical construction cycle The MSS is now ready to be lifted into the concreting position 17 Overhead MSS - A typical construction cycle The MSS is now ready to be lifted into the concreting position 18 Overhead MSS - Rio Major, Portugal 19 Overhead MSS - Rio Major, Portugal 20 Overhead MSS - Grandola, Portugal 21 Overhead MSS. .. L” 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 13 “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 14 Overhead MSS - A... construction cycle 15 Overhead MSS - A typical construction cycle “0,2 x L” In the next position, the Formwork is assembled 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 16 A Rear Support is rigged in place, and will provide the lifting of the Main...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 11 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 12 Overhead MSS - A typical construction cycle “0,8... lifted into the concreting position 18 Overhead MSS - Rio Major, Portugal 19 Overhead MSS - Rio Major, Portugal 20 Overhead MSS - Grandola, Portugal 21 Overhead MSS – Bid 374, Taiwan, R.O.C 22 Overhead MSS – Bid 374, Taiwan, R.O.C 23 . operation. Strukturas supplies two types of MSS: • Overhead MSS • Underslung MSS 4 Overhead MSS 5 The development of our cost-effective system over the years, stems from the need to reduce the high costs of. the Main Girder this time. “0,2 x L” “0,2 x L” Overhead MSS - A typical construction cycle 17 The MSS is now ready to be lifted into the concreting position. Overhead MSS - A typical. cycle 18 The MSS is now ready to be lifted into the concreting position. Overhead MSS - A typical construction cycle 19 Overhead MSS - Rio Major, Portugal 20 Overhead MSS - Rio Major,