Inspection Openings
Precast concrete inspection cover
- Suitable for grassed, bituminised and paved areas
- Available in two sizes to suit 100mm or 150mm risers
- Minimum concrete strength 32 MPa at 28 days
Grated stormwater collection point
- Cast iron grate and frame
- Provides stormwater collection to 150mm drains (fits 150mm PVC collar)
- Suitable for all paved, bituminised and concreted areas
- Tar dipped grate and frame
Item | Approx Mass |
---|---|
Grate and frame | 5kg |
Flanged I.O. cover and frame • Type 1
- Suitable for use in concreted and paved areas
- Available in two sizes to suit 100mm or 150mm risers
- Cast iron frame and cover are tar dipped
- Available in bolt down
- Minimum concrete strength 32 MPa at 28 days
- Available for sewer or stormwater
Diameter | Item | Approx Mass |
---|---|---|
150 dia. clear opening | Cover & frame | 6.5kg |
Support block | 45kg | |
230 dia. clear opening | Cover & frame | 14.5kg |
Support block | 40kg |


I.O. cover and frame • Type 2
- Suitable for use in paved, bituminised and grasses areas
- Available in two sizes to suit 100mm or 150mm risers
- Cast iron frame and cover are tar dipped
- Available in bolt down
- Minimum concrete strength 32 MPa at 28 days
- Available for sewer or stormwater


Precast concrete flushing point support block
- For heavy surface installation with common effluent drains
- Will suit both 100mm and 150mm flushing points
- Designed to suit I.O. cover and frame type 2 (refer to Ri-Industries’ data sheet E3)
- Minimum concrete strength 32 MPa at 28 days

Item | Approx Mass |
---|---|
1,000 x 700 | 225kg |
600 x 600 | 100kg |
Rear of allotment collection slab
- For light service use, ie. domestic blocks where surface water collection is required
- Designed for pedestrian traffic only
- Model suits 100mm and 150mm risers
- Moulded to suit all PVC and metal stormwater grates
- PVC grate supplied with the slab
- Minimum concrete strength 32 MPa at 28 days

Item | Approx Mass |
---|---|
100/150mm riser | 62kg |
Cast iron grates & frames
Sump grates standard sizes | |
---|---|
Available in: | 300 x 300 / 450 x 450 / 600 x 600 / 900 x 900 Non standard sizes available on request |
Light duty galvanised grates & frames
- Also available for heavy duty application
- Hot dipped galvanised after fabrication
- Suitable for use in concreted or bitumised areas servicing pedestrian traffic
- Special sizes to suit other pits supplied to order

Cast iron tap/valve box
- Provides effective protection for small stop cocks, etc. located below ground level
- Tar dipped cast iron construction with steel pin hinge
- Also available with 254mm x 152mm clear opening
Opening | Approx Mass |
---|---|
254 x 152 | 12kg |

Chequerplates & sump finishing collars
- 6mm thick galvanised chequerplate
- For finishing pits in grassed, bituminised or paved areas
- Special sizes fabricated to order
- Minimum concrete strength 32 MPa at 28 days

Item | Weight |
---|---|
300 x 300 Clear Opening | |
300 x 300 Plate | 6.5kg |
300x 300 Surround | 21.5kg |
450 x 450 Clear Opening | |
450 x 450 Plate | 13.5kg |
450 x 450 Surround | 21.5kg |
600 x 600 Clear Opening | |
600 x 600 Plate | 6.5kg |
600x 600 Surround | 21.5kg |