Manhole

manhole

MANHOLE COVERS & FRAMES

Elfit Access Covers and Frames deliver exceptional durability, strength, and consistent quality. Engineered using advanced software and rigorous testing, they are optimized for minimal weight while exceeding the design breaking load of 480 kN for Class D400 covers. Current production consistently surpasses this standard, with covers breaking between 470-510 kN. Manufacturing adheres to BS EN 124, including routine load testing.

Manhole Standard Etisalat (e&) Manhole Standard DU
CW1 (CLASS D 400) CW2 (CLASS D 400)
CW2 (CLASS D 400) CW3 (CLASS D 400)
CW3 (CLASS D 400) CW4 (CLASS B 125, 150 KN TEST LOAD)
CW4 (CLASS B 125, 150 KN TEST LOAD)
Type Clear Opening (MM) EN124 CLASS
Carriageway 1 600 X 600 D 400
Carriageway 2 1224 X 700 D 400
Carriageway 3 1835 X 700 D 400
Carriageway 4 912 X 452 B 125

Features

ACCESSORIES

Manhole Step No. 1

The design for Manhole Step No. 1, shown in the data sheets was arrived at through minute consideration of safety, durability and other factors. An additional rib has been added to increase the strength of the ruling section and to reduce susceptibility to failure through crevice corrosion. Material specified is Ductile Iron Grade 420-12 rather than Malleable Iron Grade B35-12. Ductile Iron is a superior material to Malleable Iron and has largely replaced it. Unlike Ductile Iron, Malleable Iron components must be heat treated after casting to obtain the desired properties, which increases the production costs over that for Ductile Iron.

A load of 6 kN, applied at the Centre of the step with the legs clamped, in the manner prescribed in British Standard BS1247 Part 1, is specified for routine testing of production units.

A generous tread pattern, 3 mm high, is provided for positive grip. Step corners have been rounded, generously, to reduce the potential for impact injuries.

Ladder, Hooks and Bar

Material: Mild Steel Protective Finish: Hot dipped galvanised in accordance with BS729 Design specification: Ladders, Hooks and Bar comply with Etisalat specification MS109. Standard Lengths: 2150, 2300, 2450, 2600, 2750, 3000, 3250, 3500, 3750.


Bearers, Bolts and Pins

Material: Bearers: Mild Steel Pressed Channel Bolts: Mild Steel Pins: High Tensile Steel Rod Protective Finish: All items - Hot dipped galvanised in accordance with BS 729. Design specification: Bearers: MS 105 Bolts: MS 108 Pins: MS 101 Standard Lengths Bearers: 178, 279, 508, 813, 1270, 1574 & 1879 Bolts: 127 (1/2 in. Dia) and 150 (5/8 in. Dia)

Iron Anchor No. 4

Material: Mild Steel Bar, normalised at 650 degree C after forming. Protective Finish: Hot dipped galvanised in accordance with BS729 Design specification: Etisalat Specification MS 103


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