WASTEWATER TREATMENT PLANTS

Preparation of Quality Control Plan and Procedures, and providing quality control engineers for monitoring these activities:

Earth Work

• Geotechnical information and dewatering
• Trial holes
• Excavation and support of excavations
• Trench excavation for pipelines
• Deep foundation treatment
• Fill material: special measures and testing
• Steel sheet piling
• Embankments and site grading

Concrete

• Selection and testing of materials for concrete (cement, aggregates, water and admixture), reinforcement, water stops, joint sealer, and joint filter
• Storing concrete materials
• Design of concrete mixes and trial mixes of concrete
• Cutting, bending, welding and fixing of reinforcements
• Constructing joint and movement joint
• Erection and removal of formwork
• Concrete in large pours (mass concrete)
• Hot weather concreting
• Slip forms for tanks
• Structural pre-cast concrete (strength, dimensional tolerances)
• Installation of pre-cast concrete structural members
• Cutting and testing of core samples

Piles

• Cast in-situ piles
• Concrete test cylinder for piles
• Pile testing, procedures and recorded data
• Pre-cast piles (formwork, concreting), curing handling and storage of piles
• Sequence for construction
• Length and tolerances of piles

Brickwork and Block Work

• Testing of bricks and blocks
• Sample panels
• Chemical resistant mortar
• Ties for brickwork and block work
• Bricks for sewer linings
• Clay tiles for sewer linings
• Plasticizer for cement mortar

Road Work

• Earth works and drainage
• Formation of sub-grade
• Testing and storing materials for sub-base and road base
• Sealing surfaces
• Testing of temporary and final reinstatement
• Testing of concrete pavement
• Surface levels: tolerances
• Kerb laying
• Footpaths
• Road markings
• Concrete Bollards

Building Works

• Building paper
• Damp proof membranes for roofs
• Brickwork and block work
• Brickwork reinforcement
• Movement joint mastic and filler
• Paints and protective coatings
• Timber, carpentry and joinery, fixtures and fittings
• Metal work, such as aluminum window frames, suspended ceilings, locker, sliding and folded steel doors, steel gates and railings
• Gypsum plasters
• Terrazzo tiles, glazed ceramic wall tiles and fittings, and cement tiles for roof
• Preparation and painting schedule for architectural and building work
• Preparation and painting schedule for metal surfaces
• Galvanizing
• Epoxy coating work
• Internal and external colors schedule

Pipelines

• Pipelines materials
• Concrete pipes
• Iron pipes and fittings
• Vitrified clay pipes and fittings
• Polyethylene pipes
• Granular material for bedding to pipelines
• Joint rings and lubricants
• Gaskets for flanged joint
• Flexible couplings and flange adapters
• Valves
• Building pipes through structures
• Concrete and surround
• Protection of bolted couplings and adaptors
• Testing of pipelines (air test and water test)
• Testing of pressure pipelines or force mains
• Television inspection of non-pressure pipelines

Steel Work, Metal Work & Miscellaneous Items

• Structural steel work
• Fabrication and testing
• Bolting metal work to concrete
• Fixing manhole cover frames
• Venture flume installation
• Erecting flame poles