Innovative Formwork Solutions at Two Sudirman Tower
Jakarta, Indonesia

The joint venture between China State Construction Engineering Corporation and Taisei Corporation set three clear expectations from day one: 

• Flexibility; to handle variable slab heights, non-typical floor geometries, and dense reinforcement. 

• Efficiency; to maintain an aggressive schedule and minimize crane dependency. 

• Safety; to protect workers while operating at extreme heights, with a zero-accident target. 

Complicating matters further, the project is located adjacent to some of Jakarta’s MRT tunnels, preventing the use of soil anchors for lateral support. The design also calls for architectural-finish inclined columns up to 16 m high in the podium, and monolithic construction for typical floors to overcome heavy rebar congestion—with floor-to-floor heights of 3.8 m for the residential tower and 4.5 m for the mixed-use office/hotel tower. 

To meet the completion deadline, the construction cycle for typical floors must be less than seven days per floor.  These are not challenges for standard solutions; they demand custom engineering and world-class temporary works systems. 

The Right Systems for the Right Tasks 

DUO – Lightweight and Versatile Formwork for Groundworks and Columns 

The DUO system is a handset solution designed for sites with limited or no crane access. The largest panel (135 x 90 cm) weighs only 24.9 kg yet withstands fresh concrete pressures of up to 50 kN/m². This makes it ideal for foundations, bases, retaining walls, and lift shaft pits. 

Columns are efficiently formed with the Multi Panel 135 x 75 weighing just 22.9 kg. Using the “windmill” configuration, columns can be adjusted in 5 cm increments to achieve perfectly square results and handle concrete pressures up to 80 kN/m². 

For finishing, the DUO Chamfer Strip creates a precise 15 x 15 mm beveled edge without nails. Once crane access becomes available, the system easily transition to gang-formed applications using the DUO Crane Eye lifting up to 14.6 m² (12 panels) with just two hooks. 

PERI UP MD & MULTIFLEX – Adapting to Podium and Basement Levels 

The MULTIFLEX system, supported by PERI UP MD shoring, has been the backbone for slab and beam formwork. With spans of up to 4 m, it adapts to irregular geometries and supports high loads. 

It also provides an innovative bridging solution to overcome the poor founding conditions of the berm embankment used to stabilize the secant walls. For this, a top-down construction method was adopted around the perimeter of the podium, utilizing RCS rails as primary bearers to span soil inclines. Later these RCS rails were repurposed into climbing protection screens—demonstrating efficiency through versatility of PERI formwork and shoring systems. 

HANDSET Alpha – Lightweight and Universal 

The Two Sudirman Towers demand strong yet flexible wall and column solutions. PERI HANDSET Alpha, designed specifically for customer’s needs in the APAC region, offers panels weighing under 34.6 kg/m² yet capable of withstanding 75 kN/m² of fresh concrete pressure. 

From 1.8 m × 1.8 m perimeter columns to thick core walls and smaller podium columns, all can be formed without additional components. One product, multiple applications. 

MONOCAST Aluminium Formwork – A First in Indonesia 

For the typical floor levels, a monolithic construction method has been applied.  This required a hybrid solution, including the first-ever deployment of MONOCAST aluminium formwork in Indonesia, combined with HANDSET Alpha for walls and columns. 

Beams and slabs can now be poured in a single, seamless cycle—saving time, reducing labour, and ensuring consistent quality. For a project targeting weekly floor cycles, MONOCAST paired with HSA is a true game-changer.