prvi hrvatski speleološki kongres - KARST underground protection

LITERATURA:
BAUĈIĆ, I. i suradnici (1959): Speleološki objekti otoka Braĉa- zapadni dio (I).
Elaborat. Speleološka sekcija Geografskog društva Hrvatske, Speleološko društvo
Hrvatske - SDH. Zagreb.
BOROVIĆ, I., MARINĈIĆ, S., MAJCEN, Ţ., MAGAŠ, N. (1968): Tumaĉ za
Osnovnu geološku kartu 1: 100 000, list Jelsa, Institut za geološka istraţivanja,
Zagreb.
MARINĈIĆ, S. & MAJCEN, Ţ. (1968): Osnovna geološka karta 1: 100 000, list
Jelsa, Institut za geološka istraţivanja, 1967- 1968, Zagreb.
MARINĈIĆ, S., KOROLIJA, B. i MAJCEN, Ţ. (1968): Osnovna geološka karta 1:
100 000, list Omiš, Institut za geološka istraţivanja, 1968- 1969, Zagreb.
ŠUJICA, N. (2004): Geološka graĊa otoka Braĉa, Speleosfera , 1/2004, 6, Zagreb
TRPĈIĆ, M. (2005): Speleološka ekspedicija „Braĉ 2004“, Speleosfera , 2/2005, 18-
43, Zagreb
Giant cave - scientific research
Grotta Gigante - znanstvena istraţivanja
Alessio Fabbricatore 1,2
1
Direttore Grotta Gigante, Trieste, Italy
2
Società Alpina delle Giulie , Trieste del Club Alpino Italiano
Key words: Karst, Giant cave, Trieste, caves,
Ključne riječi: krš, Grotta Gigante, Trst, spilje,
The electrical system of the Grotta Gigante: compliance with the laws in force
and lighting study (project by architect Alessio Fabbricatore, 2009)
The Grotta Gigante, which opens into the Mesozoic limestone, is a large cave,
and the only one to be open to the public among the caves of the Trieste Karst. Its
central cave entered the Guinness Book of Records in 1995 as the largest show cave
in the world. The central cave is 107 metres high and 130 metres wide, and has a
volume of 600,000 m 3 . The first documented mention of the Grotta Gigante dates
back to 1851. The Grotta was opened to the public in 1908 by the Club Touristi
Triestini (Trieste tourist club); the first electrical lighting system was carried out in
1957 by the Societa Alpina delle Giulie sezione di Trieste del Club alpino italiano
(The Julian Alps Association - division of Trieste of the Italian Alpine Club).
The existing electrical power supply is Low Tension; with reference to the
neutral state, the system is a TT, three-phase, 400 V, 50 Hz system, with a subscribed
demand of 70 kW. The origin of the electrical installation is slightly downstream of
the electrical power supply point of the distributing company (ENEL), inside a
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