Roof of Administration Building, Faculty of Arts, which is not visible from below (photo. 3).
to be more efficient. each wall section are and can be controlled and chain drive.
That aluminium was
Faculty of Arts classrooms as seen from roof of Administration Building (photo. 4).
on
the
All blades for ing 2,020 sq. ft. were alternately The method of fixing is unique in- interconnected anodised in pale gold and dark gold. asmuch as all fastenings are concealed with a handle
The requirements of the roofs pos-
from view and neither sheets nor ed various problems. The aesthetics accessories are pierced at any point the obvious were still important and it was neces- exposed to the weather. choice for the louvres goes without sary that a cladding material should In the installations under considera- saying. A lasting finish, good be found which would give a long tion, endlaps were not required strength, and lightness were required, and trouble-free life and, at the same the administration building of all of which were more than fulfilled. time have as good insulation pro- Faculty of Arts, photograph 3, as the The alloy chosen was Noral 2SH, perties as possible. Further, due to sheet was supplied in lengths suf- supplied by Northern Aluminium Co. design of the buildings, a sheet was ficient to span from ridge to eaves in Ltd. England through their associates, required which was absolutely weather- one run (a sheet length of 30 ft. in Alcan Asia Ltd., and the fabrication proof at low pitches.
some instances). However, in photo- was carried out in Diethelm & Com-
To this end, the architects decided graph 4 of the Faculty of Arts class- pany's aluminium factory. After that Snaprib sheet manufactured by rooms, an endlap was necessary and fabricating, all louvres were anodised the Northern Aluminium Company, here sheets with specially-formed Ltd. would fulfil all their require-
ends were used in order to give a inents. This sheet, which is roll form- tight and entirely waterproof joint. ed from Noral 3SH (a special roofing As the name suggests, Noral Snaprib sheet aluminium alloy containing sheet is fixed to the purlins by snap- To correspond with the striking 11% manganese), incorporates three ping over special clips which are design of the buildings, the 14 sets 14 in. deep corrugations at 10 in, turn fastened to the purlins. of horizontally adjustable louvres in pitches, giving an effective width of
All accessories or flashings are pur- the library covering an area of 2,260 20 in. for each sheet. The flats be posc made in aluminium and snapped sq. ft. were just plain anodised. But tween the corrugations themselves have into position, giving clean and unin- in the Faculty of Arts, the six sets three small flutes which give the sheet terrupted lines, as clearly shown of vertically adjustable louvres cover- an even more pleasing appearance. photographs 3 & 4.
to give an attractive uniform appear ance and high corrosion resistance ensuring a long life with no main- tenance or painting.
In
in
ARTISTIC
WORKS
RAOUL BIGAZZI
UNION BUILDING
MARBLES
MOSAICS
ORNAMENTAL TERRAZZO TILES
STAINED GLASS
TELEPHONE: 25177
BRONZES
WROUGHT IRON
THE HONG KONG & FAR EAST BUILDER VOLUME 14, NUMBER 3
FA
47