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

G curve for a length of 160 m., measured åt the top including the head. Its cross-section is to be seen on Plate I. The top shall be in a level 6 m. above low-water level. The sides shall have a slope of 1 on I1/* above low-water level, but below low-water level the slopes shall be 1 on 21/? on the outer side and 1 on I1/! on the inner side. The width of the top is 3,5 m. The top shall be paved in the same man- ner as that of the Grandi-mole; the blocks of the seaward slope shall accordingly have a weight of 5 to 10 tons, those of the harbour slope a weight of about 1 ton. The mole shall be provided with 20 moor- ing implements as shown on Plate I. Their places will be pointed out during the construction of the mole. In 10 places according to further direction there are to be built flights of steps, 1 m. in breadth, leading from 1 m. above low-water level upwards to the top of the mole. They shall be built of quarry- stone hewn so as to fit into one another. The mole terminates in a head built of loose stone and blocks, with a circular platform at the top, paved like the top of the mole. The surface of the platform shall be 7 m. above low-water level, and it shall have a diameter of 6,25 m. From the platform a flight of steps built of hewn quarry-stone leads down to the mole. The sides of the head shall slope so as to form an even transition to the sloping sides of the mole. , The portion of the head below low-water level shall present an even transition from the slope of 1 on I1/* on the harbour side to the slope of 1 on 21/a on the outer side. The large stone covering the sides of the head must have a weight of at least 5 tons. Close by the foot of the mole-head, in the outer part of the entrance to the harbour, there is to be built a framework of timber, as exhibited on Plate III. On this support there is to be placed a lighthouse made of ironplates riveted together, with a lantern and thick, convex, cut-glass panes. In the lantern there shall be placed a petroleum lamp with a 14"' annular burner and a 500 mm. cut-glass lens. The lamp shall hold a supply of petroleum sufficient for a fortnight. The light shall show a fixed green light outside the entrance to the harbour, and a fixed red light on the harbour side. The height of the flame shall be 2 m. above the platform. The lighthouse shall be watertight and wind-proof and shall be securely fastened by bolts to the decking of the framework. The framework is supported by 4 piles 311/a cm. in diameter, rammed down in a square with a slope of 1 on 7 towards the centre of the square. Against those piles another 4 pieces of 3P/2 cm. stay-piles are to be rammed down, with a slope of 1 on 4, directed towards the same centre. The piles shall be bound together by twos with a wedge and 3 pieces of screw-bolts having a diameter of 30 mm. At the top the piles shall be combined two by two with two 23a/2 by 26 cm ties, which shall be not- ched into the piles and fastened to them by means of 30 mm. screw-bolts, one at each joint. Across those ties there shall be laid 8 beams of 23V2 by 26 cm. timber, fastened to the ties by 30 mm. screw-bolts, one at each crossing. Each side of the framework shall be provided with a pair of cross-wise placed braces of lls/4 by 23J/2 cm timber, the top-ends of which shall on the one pair of op- positesides butt on to the above-mentioned ties, and on the two other sides on to 23V2 by 26 cm. ties the upper surface of which shall be placed flush with the underside of the other pair of ties. The foot-end of the braces shall butt on to ties of 23a/2 by 26 cm. timber, which shall be placed so as to have on the one pair of sides of the frame the under-side, and on the other two sides the upper surface in a level 1,1 m. above low-water. These ties shall be fastened to the piles with 30 mm bolts. The braces are to be fastened with 25 mm. bolts. The above-mentioned tier of beams shall be provided with a close deck- ing of 73/+ cm. planks, which shall be nailed to the beams with 18 cm. galvanized pine-spikes (i. e. spikes having in ungalv. state a weight of 4,25 kg. per 100 pieces), two at each crossing. Around this platform, the surface of which shall be in a level 7,5 m. above low-water, there is to be built a 1,3 m high, strong parapet (for protecting the lighthouse against the action of waves) of 21 by 21 cm. posts or stanchions, which shall be tenoned into the deck-planks of the platform and propped by a strut against the platform. A tie-rail of 21 by 21 cm. timber shall be laid across the tops of the stanchions and joined to them by means of mortises and tenons. The stanchions shall be provided with a close outer planking of 5 cm. planks, which are to be nailed to them by 12a/2 cm. galvanized pine-spikes (i. e. spikes having in ungalv. state a weight of P/2 kg. per 100 pieces). At the middle of the side facing the harbour there shall be built a wooden ladder, 0,7 m. in breadth, reaching from low-water level upw’ards to the platform; it shall be strongly fastened to the nether-most tiebeam, braces and beams of the framework. The bottom-ring of the light-house shall be fastened by galvanized bolts to the beams of the platform. Beside the ladder shall be placed a tidegauge of cast iron furnished with distinct marks and numbers of metal screwed on it. It shall extend from 0,5 m. below upwards to 6,6 m. above low-water level, and shall have a small mark for every 10 cm., a larger one for every 50 cm., and a large mark for every m. c. The Batteri-mole extends from a point about 30 m. to the east of the Batteri in a north-wester- ly direction 265 m. (measured at the top) including the head, in a straight line outwards to the 6 m. curve, where it terminates in a head. It is to be given a cross-section as exhibited on Plate I. The level of the top shall be 6 m. above low-water. The sides of the mole shall be given the same slopes as those of the Effersey-mole. The breadth of the top is to be 6,75 m. on the innermost 93 m. of the mole, but 3,5 m. on the remainder, and it is to be paved like that of the Grandi-mole. In other respects the mole shall be constructed like the Grandi-mole and the Effersey-mole; the large stone of the seaward slope shall accordingly have a weight of 5 to 10 tons, those of the harbour slope 1 ton. The mole ter- minates in a head constructed like that of the Effersey-mole. In connection with the head there is to be