Tímarit Verkfræðingafélags Íslands - 01.05.1922, Blaðsíða 12

is good, and will allow of piles being rammed down.
The disadvantage of both places is their situation,
which is too far from the large fishing-banks, and
too near the harbours of Reykjavík and Hafnar-
fjörður.
On plan III are shown the constructions which it
would be possible to carry out here, viz:
a pier, 120 m long, supported by the rocks, with
a boat-bridge built on the inner side, as mentioned
under Vogar, the total cost of pier and bridge being
estimated at abt. Kr. 115,000. In continuation of
this pier it is suggested (as shown with dotted
lines) to build a mole of 330 m until a depth of 9
m water is reached, the total length of the mole
from land being 450 m. In combination with an-
other mole, 550 long, mole-head at 8 m depth of
water, an excellent harbour will be formed, giving
at low-tide a harbour area of abt. 55 hectars, about
half of which has more than 4 m depth of water.
Fi’om the western mole are three projeeting piers of
wood, inclining 1: 20, length about 70 m, and about
5 m wide.
The total cost of the two moles in question is
estimated at Kr. 2,735,000.
3. K e f 1 a v i k, m a p III. The natural conditions
are not good, the creek is open, the depth is great,
and the advantages gained by building a mole would
be too small to warrant the high cost of construction.
For instance, the mole shown on the plan would
cost abt. Kr. 640,000, and would in reality only be of
slight use.
A landing-stage of iron-concrete blocks as sketch-
ed on the map (length abt. 100 m, 5 m wide, the
level of the top falling from plus 5,0 to plus 2,0,
with 2 m depth of water at the outer end,and furnish-
ed with double rails) will cost abt. Kr. 105,000, and
cannot be used in eastern winds.
4. L e i r a. The fishing is unimportant and the
soundings which were taken showed that it would
be impossible to construct any useful moles at a
reasonable cost. There are here two landings-places
for the boats, the western of which can be some-
what improved by digging-out and levelling at a
cost of abt. Kr. 5000,00.
5. • H ó 1 m a r. The examination of this place, and
the soundings which were taken show that the na-
tural conditions exclude the possibility of harbour
constructions.
6. Gerðar, mapIV. This is the largest of the
fishing-places between Keflavik and Garðskagi. The
soundings which were taken show that the depth
increases so quickly that it reaches 13—14 m imme-
diately outside the low-water line. This in itself
would, on account of the cost, exclude the possibi-
lity of constructing a harbour here.
On the other hand it would be possible to im-
prove the landing place considerably by building in
continuation of the existing wall on the southern
side a further stone wall of 40 m, stretching out
to the low-water line. The cost is estimated at Kr.
16,000.
lo cover the north side of the landing-place
brick-built mole would be required, reaching out to
minus 1,5, abt. 130 m long, as well as a bridge of
stone along the outer end of the mole. The top-
edge of the mole should be 5,6 m above low-water
level, 1,3 m above high-water, the width of the
top level being 3 m, and at the outer end 6 m.
The mole will have a 1 m high parapet of stone and
be furnished with double 10 kilo rails, the cost
being estimated at Kr. 130,000, making the total
cost of the whole construction abt. Kr. 146,000.
The advantage gained in this manner wouid,
however, not be very great, as the area inside is
rather narrow (80 m), and partly covered with
buildings.
7. K r ó k s ó s, m a p IV. At low-tide this place
would appear to be favourable for the construction
of a good and cheap harbour by building on top of
two rocks which stretch out into the water, and
possibly deepen the area they form. Careful sound-
ings and borings showed however that this area
has not at any point a depth of even )/2 m at low-
tide, and cannot be deepened to more than 1—2
m. To attempt to cover this small area by con-
structing moles would be out of the question.
Outside the 2 m curve the depth increases vei’y
rapidly, and the only constructions which would be
at all possible are the two moles sketched on map
IV. Thus a harbour would be formed at a cost of
Kr. 1,200,000, but it would only have a covered
area of 1 /3 hectar with two meters of water.
8. S a n d g e r ð i, m a p V. The fishing from this
place is very considerable especially during the
winter season, from January to the middle of May,
and the small harbour, which has no cover from the
Atlantic Ocean, is often dangerously full of fishing-
craft from Sandgerði and the neighbouring places.
Mr. Krabbe calls special attention to the favourable
position of this place, and points out that it will
be possible to carry out fishing from there on a
much more extensive scale than the case is at pre-
sent, if the necessary works are constructed to
create a safe harbour for the fishing boats, when
they are unloading their catch or taking in pro-
visions. Such structures would be extremely costly,
on account of the length and necessary solidity of
the moles.
On map V will be found a plan of the proposed
constructions which consist of two large outer moles