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

Description of the work required. The work at the construction of the Harbour of Reykjavik is to be undertaken as an aggregate enter- prise, i. e. the Contractor must undertake the execution of all work and deliveries required for the con- struction of the harbour; cf., however, Sections VI and XI of the Special Conditions. The work to be done comprises: a) the construction of 3 moles, b) dredging, c) the construction of 2 steamboat-piers. Besides the information about the work contained in the following description, further directions are to be found in the accompanying »Special Conditions« and »General Conditions«. The description is accompanied by 4 plates, viz: Plate I: A ground-plan of the Harbour at 1 : 2000; Cross-sections of the moles. Plate II: The steamboat-pier at Hafnårstræti. Plate III: The steamboat-pier at the Batteri-mole. Plate IV: Examinations of the bottom. With regard to the map of soundings it must be observed that they were taken in the summer of 1907, but the repeated soundings taken in March 1912 showed no traceable alterations of the depths at the sites of the moles and the pier. Heights and depths are referred to the lowest water level that occurs, Which is 7,26 m. below a bolt fastened in the north-side of the post-office. The highest wrater level that occurs lies 5,42 m. higher. But the ordinary rise of the spring-tide is 4,5 m, so that the level of ordi- nary spring-tide low-water is 0,46 m. and that of ordinary springtide high-water 4,96 m above lowest w ater level. Ordinary low water at neap is 1,75 m, and ordinary high-w'ater at neap 3,75 m above lowrest water level. Description of the work. 1. The moles. The moles to be built are three, viz: a) the Grandi-mole, b) the Effersey-mole, c) the Batteri-mole. a) The Grandi-mole is to be erected on a reef (the Grandi) extending from the mainland to Effersey, northwest of the harbour. The reef consists of firm gravel and stone and is dry at low-water. The mole begins at a point lying 150 m. to the west of the eastern side of Brunnstigur, and runs along the Grandi out to Effersey. It is straight-lined, except for a slight elbow near the middle. Its to- tal length is 700 m. measured at the top. The mole is to be built of rip-rap, and shall be given a cross-section as exhibited on Plate I. The stone employed for the hearting of the mole shall be so small and so densely stowed as to prevent con- siderable travel of sand through the mole. The loose blocks of stone must on the outer side of the mole have a weight of 5 to 10 tons, and on the inner side of about 1 ton. The level of the top shall be 7 m. above low-water, and it shall be built of quarry-stone dressed so as to fit into one another and pre- sent a pavement easily passable with loaded handcarts. The width of the top shall be 2,5 m. The sides shall have a slope of 1 on I1/*. b) The Effersey-mole extends from the termination of the Grandi-mole in Eflersey in a south- easterly direction 315 m. in a straight line out to the 6 m. depth, and after that runs along the 6 m.