Objectives

The primary objective of this tender is to undertake a comprehensive condition assessment of the bulk infrastructure at Emalahleni Water Treatment Works, including the upgrading and extension of existing facilities. This encompasses evaluating the current state of infrastructure components such as reservoirs, pump stations, clarifiers, pipelines, and associated structures to ensure operational efficiency, safety, and compliance with standards. The project aims to facilitate future maintenance, rehabilitation, and capacity expansion to meet the district’s water supply demands.

Scope

The scope of work includes:

• Conducting detailed condition assessments of existing infrastructure components, including reservoirs, pump stations, clarifiers, pipelines, and associated structures.
• Preparing site layout plans, schematic layouts, and detailed drawings for upgrades and new installations.
• Designing and detailing new infrastructure elements such as reservoirs, pump stations, spillways, and intake towers.
• Upgrading existing facilities, including the extension of the water reservoir, pump stations, and associated piping systems.
• Providing detailed technical drawings, sections, and schematics for construction and rehabilitation works.
• Incorporating process diagrams, layout plans, and detailed engineering specifications.
• Ensuring all designs comply with relevant standards and specifications, including safety, durability, and operational efficiency.
• Preparing tender documentation, including drawings, technical specifications, and schedules.

Technical Requirements

The technical requirements for the tender include:

• Provision of detailed site layout plans and schematic diagrams at scales of 1:1000 and 1:800.
• Design of new structures such as reservoirs, filter buildings, pump stations, spillways, and intake towers with precise dimensions and specifications.
• Preparation of detailed engineering drawings including sections, elevations, and plan views, all on A0 size sheets.
• Inclusion of process flow diagrams and process schematics for water treatment and distribution.
• Design of structural elements such as concrete foundations, retaining walls, and embankments, with reinforcement details.
• Design of pipelines, including inlet, outlet, overflow, and sludge extraction pipes, with specified diameters and bedding details.
• Incorporation of safety features such as overflow channels, spillways, and access ladders.
• Specification of materials, including steel pipes, reinforced concrete, brickwork, and waterproofing membranes.
• Design of ancillary structures such as guardhouses, control rooms, and fencing.
• Compliance with relevant standards, including SABS specifications, and consideration of future expansion and operational needs.
• Preparation of detailed bill of quantities and technical specifications to support tender evaluation.