MARINA MALL & HOTEL

ORIGINAL DESIGN

  • Precast beams of varying spans supporting a precast slab.
  • A mixed steel-concrete structure with some use of steel beams on typical floors.

VALUE ENGINEERING

  • Vast array of different precast members (no economies of scale through repetition).
  • Construction delay due to lifting requirements of several precast items.
  • Lateral stiffness compromised by precast slabs, resulting in inter-storey drift issues.

BG&E ALTERNATIVE DESIGN

  • Precast beams and slabs were replaced by an in-situ reinforced concrete slab.
  • Single band beam along the “spine” of the building to increase lateral stiffness.
  • Structural steel beams eliminated.

OUTCOMES

  • By optimising the structural design, constructability of the building was significantly improved.
  • The construction period was reduced. Floor cycles were reduced from 8 days to 3 days per floor.
  • Mep piping runs improved by eliminating downstand beams (straight runs and no penetrations).
  • Increased ceiling void for mechanical services.
  • Significant financial savings.