.

. . We are MEP CHAPTER

HOME

PRODUCTS

PORTFOLIO

FEEDBACK

CONTACTS

 PLUMBING , DRAINAGE, FIRE SAFETY, FLUID HANDLING & MECHANICAL SUPPLIES

ALPINE STEEL offers expanding range of MANHOLE COVERS, GULLY TOPS and GRATINGS as per designer’s requirements.

MANHOLE COVERS AND GRATINGS 

DUCTILE IRON, CAST IRON and STAINLESS STEEL

Models                                 Nomenclature           Figure
ASL-MH-401

Double Triangle Manhole Cover

For Heavy Duty applications like D400 or E600 grades

  • Shape: One and double piece (3 point suspension).
  • Solid top Manhole covers and frames,
  • Available coatings are zinc, bitumen and red oxide
  • Single and double seal (optional),
  • Anti-theft captive hinged (optional)/ Lockable,
  • Non Rocking, Anti skid
  • Round and Square sizes
  • Sizes based on CLEAR OPENING.
  • Standards as per BS 497/ EN124-2 or ASTM F-1143/1144
  • Material as per BS EN 1561 and/or 1563
  • Frame Depth from 40mm to 100 mm

ASL-MH-501

STAINLESS STEEL MANHOLE COVERS

Material grade 304, for aesthetic and loading bearing applications.

ASL-G-601

TREE GRATINGS

Material Cast Iron and Ductile Iron for landscaping applications, mainly pedestrian traffic

ASL-G-621

CHANNEL/TRENCH GRATINGS

Sizes according to customers' site and drawings.

Please mention size, load capacity and material

More coming soon...

unfolds the mysteries of BS EN 124 & BS 497


Loading

BS 497

Grade

BS  497

Test Load

BS EN 124

CLASS

BS EN 124

Test Load

Ultra Heavy Duty

Areas imposing particularly high wheel loads – Group 6

Airport Taxiways

-

-

F900

900 kN

Super Extra Heavy Duty

Areas imposing high wheel loads

 Group 5, Airport Apron

-

-

E600

600 Kn

Extra Heavy Duty

Carriageways of roads

Group4, Forklifts, Heavy Trucks

Earth moving Equipments /UGWT/ OHWT

D

A

400 kN

350 kN

D400

400 kN

Heavy Duty

Gully tops in kerb side channels of roads – Group 3

-

-

C250

250 kN

Medium Duty

Footways, no heavy vehicle areas etc.  Group 2

B

150 kN

B125

125 kN

Light Duty

Areas inaccessible to motor vehicles for pedestrians – Group1

C

10 kN

A15

15 kN

 

More TIPS 

     Gully tops and Manhole Tops are grouped into following classes.

A15 (Pedestrians and Pedal cyclists),
B 125 (Car Parking Decks, Footways),
C250 (Kerbside channels of roads),
D400 (Carriageways of roads, hard shoulders, Parking all types of cars),
E600 (Aircraft pavements, Docks) and
F900 (High wheel loads, like aircrafts)

      CLEAR OPENING
For a Man entry into Manhole the Clear Opening should be at least 600mm.

       GRATINGS SLOTS SIZE     
The water way area shall not be less than 30% of the clear area with
even distribution of slots.

     LOAD TESTING

     Apply Load application at the rate of 1 kN/sec to 5 kN/sec upto 2/3 of the test load.