Reyjkavik Havn
Foredrag, Holdt I Dansk Ingeniørforenings Sektion For Vej-, Vand- Og Jærnbanebygning Den 5. April 1918

co . I Line III and IV from the Batteri. The following table shows the result of the borings. Di- stance in III IV Depth ol water m Depth to solid ground in Nature of bottom Depth of water m Depth to solid ground m Nature of bottom too 3.90 4.15 Solid ground is firm clay, thereabove pebbles mixed with sand. 3.90 4.00 Solid ground is basalt, partly covered with sand. 125 4.40 5.50 S. g. is firm clay, thereabove sand. 4.40 5.30 S. g. is firm clay, thereabove pebbles mixed with sand together with large stones. 150 4.95 6.70 The same. 4.95 5.70 S. g. is firm clay, thereabove sand. 175 5.05 7.15 The same. 5.05 6.15 The same. 200 5.55 7.10 S. g. is firm clay, thereabove soft sand. 5.55 6.70 S. g. is firm clay, thereabove soft sand. 225 5.70 7.50 The same. 5.70 7.30 The same. 250 5.95 8.55 The same. 5.95 8.50 The same. 275 6.25 9.85 The same. 6.25 9.25 The same. Line V. Line along the site of the Hafnarstræti-pier at the middle. Distance m Depth of water in Depth to solid ground m Nature of bottom 65 + 0.30 4.80 Solid ground is firm clay, thereabove pebbles and sand. 100 -4—0.70 6.00 Solid ground is firm clay, thereabove sand. 140 1.60 7.00 The same. 175 2.30 7.50 The same. Besides these borings a trial was made of ramming down a 50 mm. cylinder of wrought iron provided with an iron-point, at the point marked »a« on the map-sketch Plate IV. The ramming down was done with a rammer having a monkey of 100 kg., and a fall of 1 m. The cylinder was driven by hand-power through the uppermost soft layer and then rammed down. The first 10 strokes drove the cylinder 34 cm. down; at the next 10 strokes it sank 7 cm., at the next 25 strokes 8 cm. The cylinder bent, so that further ramming was impossible.