H-1/01 Local Road Construction, Moheim-Oklungen, Bjørkedalen NORWAY – 1995
Roads (01-016-A)
01-016-A – pag 2/2
Problem Serious settlements as a result of falling water levels (in surrounding rivers and lakes); Height increase required construction with Leca® as a lightweight fill material over a length of 150 m.
Composition Road bed Conventional road bed 0.5 m; Beneath: rock. Base Geotextile class 3; Leca® 0-32 mm, thickness 1.5 m; Two layers of 75 cm wrapped in geotextile, overlaps 0.5 m, grip length 2.5 m. Subsoil Peat in sharply varying thickness of 5-20 m.
Cubic Area: approx. 2,000 m3. Load: Not known.
layer in the other lane, without using geotextile; 11. Construction of the road bed and completion of the road surface.
Quality control No data.
Performance Measurements No data.
Construction
Building method Construction of the section with traffic in one lane. 1. Excavation of one side of road to intended level; 2. laying of the pre-cut geotextile strips crossways to the carriageway with 0.5 m overlaps; 3. spreading and compaction of the Leca® with a digger on caterpillar tracks, to a thickness of 0.75 m 4. Wrapping with geotextile; 5. Application of the second layer of Leca®; 6. Wrapping over of the geotextile and covering of the Leca® layer; 7. Construction of the road bed on one side; 8. Careful excavation of the other lane; 9. Laying of the geotextile on the trench bottom (ground level); 10. Application of the Leca® fill up to the top of the Leca®
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Flaws/damage Type: no data. Time: -Maintenance work Not known.
Appraisal/Experiences Overlaps between the geotextile strips should be wider (1.0 m) to maintain a more even surface and ease excavation.
construction is