DOI Heft:
Anhang
DOI Seite / Zitierlink:https://doi.org/10.11588/diglit.51152#0201
199
1945. Today parts of the building in the west wing ofthe
cloister, rebuilt in 1953, still contain historical rooms. At
present a preachers’ seminary for the Evangelical-Lutheran
Church ofHanover is located there.
The project
Eva-Maria Eilhardt-Braune, Ivo Hammer, Hans-Jürgen
Schwarz, Erwin Stadlbauer and Axel Werner
Development and testing of a model strategy for
the preservation of the cloister - an interdisciplinary
co-operation project
The cloister in the formet monastery ofSt. Michael has been
severely damaged by environmental effects and other factors.
The masonry and ornamental decoration in the cloister,
which consist mainly of Rhaetic sandstone, show considera-
ble losses due to humidity and the harmful accumulation of
salts. Düring the last three years an interdisciplinary study
group of conservators-restorers, art historians, monument-
care specialists, architects and scientists has intensively re-
searched the factors causing the deterioration. Permanent
preservation measures, based on thorough conservation-resto-
ration and historical building surveys, have been developed
and tested. In this section the aims and tasks ofthe project
will be presented.
Angela Weyer
The exhibition concept
The exhibitions by the Hornemann Institute reflect the
diversity ofthe Institutes tasks:
on the one hand they should illustrate to the general public
the perils which cultural heritage is exposed to, thereby
demonstrating the need to preserve it. On the other hand, the
Institutes exhibitions facilitate the transfer ofnew scientific
results between specialists, contributing to an increased qua-
lity in preservation measures in the sense of “sustainable
development”, which Agenda 21 postulates.
Following an introduction to Benedictine monasteries in
general and to the conservation-restoration and historical
building surveys ofthe monastery ofSt. Michael in particu-
lar, the visitors can discover the many traces of its varied
history, while being informed about the damage to the buil-
ding and the concept for its conservation-restoration. Within
the provisional protective enclosure, we will put a modern
“conservation building site” opposite a medieval stonema-
sons lodge. We will provide elaborate Information on the
damage and its causes, on the variety of modern documenta-
tion technology, on the concepts for the prevention offurther
harmful environmental effects, and on the prospects for
remedying manifest damage.
The cloister in the Middle Ages
Ivo Hammer, Ursula Schädler-Saub, Barbara Hentschel,
Thomas Keßler and Gerhard Lutz
Medieval construction history
Through examination by architects specialising in historical
buildings and conservators-restorers, the different building
phases in the Western wing of the cloister could be more
accurately deftned. The results indicate that part of the
Western wall of the cloister, with a succession of round-
arched niches, dates back to the early llth Century. In the
1170’s, under Bishop Adelog, a new portal from the cloister
to the north-west side wing was added. Then around
1220/30 the Western enclosure was renovated and two por-
tals with trefoil arches were inserted, one to the chapter
house, flanked by two twin Windows and the other to the
ninth yoke. Between c. 1230 and 1250 the cloister received
a new arcade wall and vault, which took into consideration
the different yoke depths on the portals, but intersected the
llth Century niches, therefore these were bricked up.
Towards the end ofthe 15th Century a new dormitory on the
first floor ofthe west wing was apparently set up. The but-
tresses and blind arches in front ofthe external arcade wall
probably date from this time.
Ursula Schädler-Saub, Ivo Hammer, Meike Fuhrmann,
Jutta Hansch, Barbara Hentschel and Ina Pratesi
Polychromy of medieval architectural surfaces
and architectural sculpture
Piaster, distemper and polychrome painting, which are cha-
racteristic of the appearance of the cloister in the Middle
Ages, have been lost, with the exception ofa few traces. The
most recent conservation-restoration examinations give the
Impression of different layers of architectural polychrome
painting: in the early llth Century a fine, well-smoothed
Urne plaster was applied on the Western wall with the niches.
The Adelog portal ofthe late 12th Century consisted ofred
and light-beige sandstone. The alternating colours in the
stone were taken up in the subsequent polychrome painting
on the portal, using red, pink and ochre. The partly glaze-
like application ofthe paint allowed the colours ofthe stone
to show through. The two trefoil-arched portals have poly-
chrome painting in grey and white or pink and white tones.
The artistic details ofthispolychromepainting can no longer
be reconstructed. The new layer of polychrome painting on
1945. Today parts of the building in the west wing ofthe
cloister, rebuilt in 1953, still contain historical rooms. At
present a preachers’ seminary for the Evangelical-Lutheran
Church ofHanover is located there.
The project
Eva-Maria Eilhardt-Braune, Ivo Hammer, Hans-Jürgen
Schwarz, Erwin Stadlbauer and Axel Werner
Development and testing of a model strategy for
the preservation of the cloister - an interdisciplinary
co-operation project
The cloister in the formet monastery ofSt. Michael has been
severely damaged by environmental effects and other factors.
The masonry and ornamental decoration in the cloister,
which consist mainly of Rhaetic sandstone, show considera-
ble losses due to humidity and the harmful accumulation of
salts. Düring the last three years an interdisciplinary study
group of conservators-restorers, art historians, monument-
care specialists, architects and scientists has intensively re-
searched the factors causing the deterioration. Permanent
preservation measures, based on thorough conservation-resto-
ration and historical building surveys, have been developed
and tested. In this section the aims and tasks ofthe project
will be presented.
Angela Weyer
The exhibition concept
The exhibitions by the Hornemann Institute reflect the
diversity ofthe Institutes tasks:
on the one hand they should illustrate to the general public
the perils which cultural heritage is exposed to, thereby
demonstrating the need to preserve it. On the other hand, the
Institutes exhibitions facilitate the transfer ofnew scientific
results between specialists, contributing to an increased qua-
lity in preservation measures in the sense of “sustainable
development”, which Agenda 21 postulates.
Following an introduction to Benedictine monasteries in
general and to the conservation-restoration and historical
building surveys ofthe monastery ofSt. Michael in particu-
lar, the visitors can discover the many traces of its varied
history, while being informed about the damage to the buil-
ding and the concept for its conservation-restoration. Within
the provisional protective enclosure, we will put a modern
“conservation building site” opposite a medieval stonema-
sons lodge. We will provide elaborate Information on the
damage and its causes, on the variety of modern documenta-
tion technology, on the concepts for the prevention offurther
harmful environmental effects, and on the prospects for
remedying manifest damage.
The cloister in the Middle Ages
Ivo Hammer, Ursula Schädler-Saub, Barbara Hentschel,
Thomas Keßler and Gerhard Lutz
Medieval construction history
Through examination by architects specialising in historical
buildings and conservators-restorers, the different building
phases in the Western wing of the cloister could be more
accurately deftned. The results indicate that part of the
Western wall of the cloister, with a succession of round-
arched niches, dates back to the early llth Century. In the
1170’s, under Bishop Adelog, a new portal from the cloister
to the north-west side wing was added. Then around
1220/30 the Western enclosure was renovated and two por-
tals with trefoil arches were inserted, one to the chapter
house, flanked by two twin Windows and the other to the
ninth yoke. Between c. 1230 and 1250 the cloister received
a new arcade wall and vault, which took into consideration
the different yoke depths on the portals, but intersected the
llth Century niches, therefore these were bricked up.
Towards the end ofthe 15th Century a new dormitory on the
first floor ofthe west wing was apparently set up. The but-
tresses and blind arches in front ofthe external arcade wall
probably date from this time.
Ursula Schädler-Saub, Ivo Hammer, Meike Fuhrmann,
Jutta Hansch, Barbara Hentschel and Ina Pratesi
Polychromy of medieval architectural surfaces
and architectural sculpture
Piaster, distemper and polychrome painting, which are cha-
racteristic of the appearance of the cloister in the Middle
Ages, have been lost, with the exception ofa few traces. The
most recent conservation-restoration examinations give the
Impression of different layers of architectural polychrome
painting: in the early llth Century a fine, well-smoothed
Urne plaster was applied on the Western wall with the niches.
The Adelog portal ofthe late 12th Century consisted ofred
and light-beige sandstone. The alternating colours in the
stone were taken up in the subsequent polychrome painting
on the portal, using red, pink and ochre. The partly glaze-
like application ofthe paint allowed the colours ofthe stone
to show through. The two trefoil-arched portals have poly-
chrome painting in grey and white or pink and white tones.
The artistic details ofthispolychromepainting can no longer
be reconstructed. The new layer of polychrome painting on