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Local Plan Pré-Longet / Les Mouilles – Stormwater retention bassin – Onex – Switzerland

Local Plan Pré-Longet / Les Mouilles – Stormwater retention bassin – Onex – Switzerland

 Dams and hydraulic Engineering (Stormwater management)

  • Client: Onex Commune – Public Infrastructure and Environment Department
  • Assignment: Complete mandate SIA 103 (Swiss Standard)
  • Total cost of work: 800k CHF
  • Total cost of the assignment: 93k CHF
  • Completion date: 2013

PROJECT DESCRIPTION AND CHARACTERISTICS

The project consists of:

  • The development of a master plan for stormwater pipes for the area, located between the Pré-Longet road and the Mouilles road, to the point of connection to the communal network.
  • Control of flows of the return flow of unpolluted water according to the master plan of water evacuation for communes Onex and Lancy.
  • Design and complete project management of a retention bassin and a sewerage network.

TECHNICAL CHARACTERISTICS OF THE PROJECT

  • Reinforced concrete hydraulic structure (pre-walls – pre-slabs)
  • Bassin area: 205 m²
  • Bassin volume: 495 m³
  • Effective retention volume: 100 m³
  • Separation networks in common excavation (EC Ø 400 mm, EU Ø 315 mm)
  • Non-return valve at the outlet of the bassin

ASSIGNMENT

Realization of the complete services under the SIA 103 (Swiss Standard) including the proposed works, call for tender, execution project, works management, commissioning and completion.

Skills

Posted on

2016-09-27