Before FRP came into existence, manhole covers were
traditionally manufactured from concrete, steel fibre reinforced concrete,
cast iron, ductile iron or PVC materials, but these materials had their own
shortcomings like low load carrying efficiency. FRP is considered to be the
best alternate material for manhole covers as it has longer life span and
has the capability to withstand heavy loads. Increase in heavy traffic and
expensive metals completely replaced traditional covers with FRP manhole
covers.
Technical Specifications :
| Sr. No. |
Size |
Grade Designation |
Test Load |
| 1 |
Dia 530 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 2 |
Dia 600 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 3 |
Dia 750 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 4 |
450x450 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 5 |
450x600 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 6 |
450x900 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 7 |
600x600 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 8 |
600x900 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 9 |
600x1200 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 10 |
900x1200 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
| 11 |
1200x1200 mm |
LD-5 MD-10 HD-20 EHD-35 |
2.5 Ton 10 Ton 20 Ton 35 Ton |
Advantages :
Reasons for choosing FRP Manhole Covers over other ordinary covers are :
- 100% waterproof, corrosion free material with zero scalp value
- Light in weight & easy to handle
- Available in different granite finishes
- Can withstand heavy loads of traffic
Applications :
FRP Manhole Covers find wide application in :
- Inspection chambers for sewerage
- Underground Electrical Cabling
- Telecom Cabling
- Water, Gas and Petroleum Installations
- Beautification of Gardens and Landscapes
Sizes and load capacity
Everlast: Composite Gratings with frame.
| Sr. No. |
Size |
Grade Designation |
Test Load |
| 1 |
450x450 mm |
LD-2.5
MD-10
HD-20 |
2.5 Ton
10 Ton
20 Ton |
| 2 |
500x600 mm |
LD-2.5
MD-10
HD-20 |
2.5 Ton
10 Ton
20 Ton |
| 3 |
600x1170 mm |
LD-2.5
MD-10
HD-20 |
2.5 Ton
10 Ton
20 Ton |
Size Selection, Handling & Installation Size Selection: Clear opening
of the frame should not be smaller than that of Chamber
Handling: Everlast composite manhole covers, frames & gratings have
very good load carrying capacity. Transportation and handling at the time of
installation should be made carefully to avoid damage of corners &
edges.
Installation Procedure:
a) Prepare concrete bed considering height of frame. b) Frame should be
embedded in 300 x 200 mm of minimum M—20 grade concrete. c) Make sure
that top level of frame should match with the road.
