MANUALLY AFTER FINISHER

Use at low shaft heights or light traffic loads

Product for replacement

1. Cut-out marking

• Size according to the road flatness
• Preferably a circular cut-out ideally 300 mm from the frame edge

2. Road cutting

• Top perpendicular at least 60 mm
• Preferably using a mill with a perpendicular wall through the entire cut-out

3. Demolition around the existing frame

• Leave the lid in place as long as possible
• It is important not to damage other surfaces

4. Removing the hatch

• Protect the shaft from falling debris
• Do not damage the top of the shaft

5. Cleaning the hole

• Remove all loose parts
• Wash out the dirt

6. Calculation of the composition

• Always better to have fewer balancing rings
• Expect 10-20 mm of high-strength material per connection point

7. Mortar bed

• Always a material designed to fit a hatch with chemical resistance
• Can also be fit to the top using formwork

8. Fitting of rings

• Moisten the concrete rings
• The connecting surface must be supported in its entirety

9. Grout

• Always with high strength and resistance to chemical defrosting agents
• If formwork is being used, the rings can also be connected with grout

10. Hatch height mounting

• According to the slats to the absolute plane and the seating surface as well as the rings
• For hinged hatches, pay attention to the directionality of the hatch

11. Grout

• Again, a high-strength, chemical defrosting compound
• After a very short time, the rapidly solidifying mass is ready for further processing

12. Formwork and grout

• After curing remove the inflatable formwork
• Smooth inner sharp edges created by leaks

13. Removal of formwork

• Tighten the bedding very well so that the formwork holds even without the carrier
• Use a hammer with a flat attachment

14. Impregnation

• Apply onto the entire area below the asphalt
• It’s faster to use a spray bottle

15. Base asphalt layer

• Better warm asphalt concrete with more aggregate
• Clean the hatch surface

16. Compacting

• Tighten the substrate very well
• Use a hammer with a flat attachment

17. Fusible asphalt tape

• Thorough treatment of new joints
• Both the connection of the road and the new asphalt and the frame with the new surface

18. Top layer

• If the situation permits, use materials for the top layers of the roads
• Clean the surroundings and the hatch again

19. Compaction

• Into the plane with the surrounding road
• Lubricate the plate so that the asphalt does not stick

Resulting work

• Perform a flatness check
• Remove residual dirt