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About Sewage

A good sewage system is essential for a healthy environment. Duraco caters for all your sewerage needs.

Products Details

The European Norm EN 13598/2 provides for manholes 800mm and 1000 mm diameter. These manholes are large enough to allow for man-entry and make allowances for rodding and clearance while standing on the benching.

The EN 13598/2 provides specification for manholes in traffic areas and deep underground installations. Manholes are drainage or sewerage fitting used to connect drainage or sewerage installations and/or to change the direction of drainage or sewerage runs, which terminates at ground level with a riser shaft of 800mm minimum inner diameter.

Duraco can supply manhole of diameter 800 mm and 1000mm at height and specification recommended by EN 13598/2.

The manholes are adaptable to a range of standard sewer pipes and are designed to equipped with screwed PE covers for pedestrian area. In case of installation on driveways, please contact Duraco for further guidance and assistance on the type of covers to be used.

NOTE: When installed in traffic roads, the Manholes must be equipped with a reinforced concrete ring which fits around the access shaft and rest on firm ground around the manhole. A GRP or ductile iron manhole cover with a load ability of D400 should be fixed on the concrete ring.



Its one-piece moulded design as well as its rubber joining device gives the chambers a complete tightness in the ground up to a height of 2 meters over the stream.


The Chambers base has an integrated slope, in accordance with EN13598/1 and EN13598 /2, which is perfectly in keeping with the hydraulic profile of sewerage systems.


The Chambers range allows the connecting of PVC pipes with a various range of standard pipe sizes in diameter, starting from 110mm. Moreover, angular bypass pipes can be connected with the help of rubber joints. For technical advice, kindly contact Duraco.


Due to its light weight, the Chambers can be easily handled for installation on site. They can be installed by hand, without the use of lifting gear or other machinery. Besides, its cast-in-one-piece design makes the manhole adapted to fit into most environments.


It is moulded with horizontal and vertical strengthening ribs, which provide a perfect stability and strength, meant to fit in its environment. This distinctive feature enables it to stand static and dynamic loads of hardcore as well as the pressure of the ground. (MSB test results for our manhole are provided upon request)


Endowed with the quality and physical properties of the High Density Polyethylene, Duraco manholes are not affected by chemical agents such as hydrogen sulphide (H2S) and do not need any particular maintenance. Kindly contact us for more technical details.

  • Manhole Diameter - 800mm
    Height - 950
  • Manhole Diameter - 800mm
    Height - 1250
  • Manhole Diameter - 800mm
    Height - 1550
  • Manhole Diameter - 800mm
    Height - 1850
  • Manhole Diameter - 1000mm
    Height - 1355
  • Manhole Diameter - 1000mm
    Height - 1655
  • Manhole Diameter - 1000mm
    Height - 1955
  • Manhole Diameter - 1000mm
    Height - 2255

The Manhole  must be installed in accordance to WMA “Best Practice Paper”. The following major steps are involved during the installation.

1. Excavation

2. Setting the IC

3. Positioning the pipes


For technical details and guidance on the installation procedure, please contact technical team of Duraco.


The following precautions should be taken:

  1. Residents of the housing units should not tamper with the Sewer Manhole
  2. No constructions or extensions to existing building should be allowed within 1 metre of any Sewer Manhole
  3. No loading of whatever type should be allowed on Sewer Manhole

Where not recommended to install Manhole

The sewer manhole should NOT be used in the following site conditions:

  1. Where numerous 90º elbows may become necessary within the household property connection pipework to fit into the fixed benching and haunchings of the sewer manhole
  2.  In cases of high water table – which may cause uplift. The minimum distance between the bottom of the sewer manhole and the water table shall be 1.2 metres
  3. In marshy lands
  4. At old sites of cesspits, leaching fields etc. where cannot be ensured the necessary compaction to the standard conditions.