University of Gothenburg

Information about construction work week

Should there be changes in the planning, we will publish information about this.

Please respect the demarcation of the work area!

General working hours are weekdays 07.00 - 22.30. The project have a permit to perform weekend work but will only use this if necessary.

An explanation of the different work steps and what type of noise they cause can be found further down. There you also find estimated disturbances in different parts of the School.

Week 47 (21 – 25 November):

  • Drilling for wire sawing (medium level of noise)
  • Reinforcement bolt (medium level of noise)

Week 48 (28 November – 2 December):

  • Drilling for wire sawing (medium level of noise)
  • Reinforcement bolt (medium level of noise)

Week 49 (5 – 9 December):

  • Drilling for wire sawing (medium level of noise)
  • Wire sawing (medium level of noise)

Week 50 (12 – 16 December):

  • Drilling for wire sawing (medium level of noise)
  • Wire sawing (medium level of noise)
  • Drilling for cracking/blasting (medium level of noise)

 

 

Project information for the period October 2022 to March 2023.

These are the planned activities. There may be changes, mainly due to uncertain ground conditions and other unforeseen events.

More information about blasting works will come during November, including what will apply in case of blasting, which entrances are affected and at what times blasting will take place.

October:

  • Grouting
  • Drilling before wire sawing

November:

  • Grouting
  • Drilling before wire sawing
  • Rock bolting
  • Wire sawing

December:

  • Grouting
  • Rock bolting
  • Wire sawing
  • Blasting
  • Removal of rock masses

January:

  • Grouting
  • Drilling before wire sawing
  • Rock bolting
  • Wire sawing
  • Blasting
  • Removal of rock masses

February:

  • Grouting
  • Rock bolting
  • Wire sawing
  • Blasting
  • Removal of rock masses

March:

  • Grouting

 

Estimated degree of disturbance in different parts of the school during 2022.

Green = low
Yellow = medium
Red = high

Image
illustration over the block and the expected disturbances weeks 8 to 10 2021
Photo: Akademiska Hus

 

Explanation of technical terms and level of disturbance:

Drilling for wire sawing 

Drilling of guide holes to enable wire sawing.
Medium level of noise

Wire sawing

Involves rotating a diamond-coated wire through the rock to create a straight horizontal cut, so that the section can then be blasted away without causing vibrations in the surrounding rock. (the sawing can be perceived as a whining sound).
Medium level of noise.

Bottom grouting 

A method used to seal rock, to avoid uncontrolled groundwater lowering or seepage into rock shafts. Put simply, this means that holes are drilled in the rock. Then the rock's natural fracture system is injected with a cement mortar for a certain time and with a certain pressure. The result of this grouting results in a completely tight shaft.
High level of noise

Excavation work

Involves excavation and removal of soil and clay (normal machine noise, beating sound when clay is shaken from the scoop).
Medium level of noise

Reinforcement bolt

Reinforcement bolts are installed to strengthen the rock before blasting. This means insuring yourself against loose rock and falling boulders.
Medium level of noise

Mounting of beams and jack post

Welded beams are mounted on the inside of the sheet piles to strengthen the piles (welding does not sound, but grinder can be used and form a cutting sound)
Low level of noise

Mounting of insulation on jack posts and beams

Isolation is installed to counteract rapid temperature changes in the steel structure (does not sound significant).
Low level of noise

Drilling of rock anchors

Anchors are drilled into rock from the beam. These act as a basic reinforcement and replace the jack post (drilling work generally generates a grinding sound).
High level of noise.

Mounting of anchors (injection, drilling and testing)

Holes with a diameter of about 140 mm are drilled into rock , then steel rods with a diameter of 76 mm are inserted into the holes and casted. Testing takes place to ensure that the anchors is firmly attached to the rock (drilling work generally generates a grinding sound.)
High level of noise.

Uncovering of rock

Means that the rock surface is cleaned before blasting. The excavator bucket scrapes off soil and clay from the rock surface. (scraping can generate some noise, however, far down in the pit).
Medium level of noise.

System bolting

Bolts are driven into the rock after each blasting in the places where there are cracks. These hold the surface rock in place so that boulders do not come loose and cause accidents for the workers on site.
Medium level of noise.

If you have questions

Questions about ongoing construction work that are affecting your work:

Björn Hildenwall, Campus Service, bjorn.hildenwall@gu.se, 031 786 4898

Questions about upcoming disruptions:

Björn Hildenwall, Campus Service, bjorn.hildenwall@gu.se, 031 786 4898

Questions about the project at large:

Emil Gurbani, Project manager, Strategic Project Management, University of Gothenburg, emil.gurbani@gu.se, +46 76 61 85 208

Questions and wishes regarding the communication about the project:

Maria Norrström, Director of Communications, School of Business, Economics and Law, maria.norrstrom@handels.gu.se , 031-783 1247, 0709-226689