 Storm water drainage; 

 Groundwater drainage (if required); 

 Aeration; and 

 Gas. 

## 5.3.2 Standards and rules 

The following standards shall apply for the pipes: 

 TS 821 EN 1916 Concrete pipes and fittings, unreinforced, steel fibre and reinforced 

 TS 11565 EN 969 Ductile iron pipes, fitting, accessories and their joints for gas pipelines- Requirements and test methods 

 TS EN 545 Ductile iron pipes, fittings, accessories and their joints for water pipelines - Re- quirements and test methods 

 TS EN 598 Ductile iron pipes, fittings, accessories and their joints for sewerage application- Requirements and test methods 

 TS EN 10216 Seamless steel tubes for pressure purposes-Technical delivery conditions 

 TS EN 10217 Welded steel tubes for pressure purposes-Technical delivery conditions 

 TS EN 10246 Non-destructive testing of steel tubes 

 TS 9937 Polypropylene pipes general purpose 

 ISO 2531 Ductile iron pipes, fittings, accessories and their joints for water or gas applications 

## 5.3.3 Functional requirements for pipe systems 

## 5.3.3.1 Wastewater system 

Wastewater systems for the new structures and buildings shall be connected to the inlet chamber of the wastewater treatment plant. 

## 5.3.3.2 Drinking water 

Adequate drinking water (both in terms of the quantity and pressure) shall be available on site. 

## 5.3.3.3 Fire fighting water 

The wastewater treatment plant site shall be covered with fire hydrants in a number and location that fulfils the requirements according to Turkish norms and standards. 

## 5.3.3.4 Surface water drainage 

The wastewater treatment plant site shall be covered with a surface water drainage system that secures the area against flooding caused by rainfall and from erosion caused by surface flows. The system may be with surface drainage supplemented with a pipe system that ensures that surface water is discharged to the adjacent water course. 

## 5.3.3.5 Irrigation system 

An irrigation system for the entire plant area shall be established as part of the Contract. Service water shall be available at several tap locations. 

