Grubenmann
Encyclopedia
Several members of the Swiss
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

 family Grubenmann were famous as joiner
Joiner
A joiner differs from a carpenter in that joiners cut and fit joints in wood that do not use nails. Joiners usually work in a workshop since the formation of various joints generally requires non-portable machinery. A carpenter normally works on site...

s and civil engineers in the 18th century. The sons were innovators in bridge
Bridge
A bridge is a structure built to span physical obstacles such as a body of water, valley, or road, for the purpose of providing passage over the obstacle...

 construction.

Ulrich Grubenmann (1668 – 27 June 1736) lived all his life in Gstalden, Appenzell Ausserrhoden
Appenzell Ausserrhoden
Appenzell Ausserrhoden is a canton of Switzerland. The seat of the government and parliament is Herisau, judicial authorities are in Trogen. Appenzell Ausserrhoden is located in the north east of Switzerland, bordering the cantons of St...

 where he fathered three sons:
  • Jakob Grubenmann (10 January 1694 – 5 October 1758), died in Hombrechtikon
    Hombrechtikon
    Hombrechtikon is a municipality in the district of Meilen in the canton of Zürich in Switzerland.-History:Hombrechtikon is first mentioned in 1200 as Humbrechtigkon. In 1217 it was mentioned as Hunbrechticon.-Geography:...

    , Zürich
    Canton of Zürich
    The Canton of Zurich has a population of . The canton is located in the northeast of Switzerland and the city of Zurich is its capital. The official language is German, but people speak the local Swiss German dialect called Züritüütsch...

    ;
  • Johannes Grubenmann
    Johannes Grubenmann
    Johannes Grubenmann was a member of the Swiss family Grubenmann who were famous as joiners and civil engineers in the eighteenth century....

    (15 June 1707 – 10 June 1771), died in Teufen
    Teufen
    There are two municipalities of Switzerland named Teufen:*Teufen AR in Appenzell Ausserrhoden*Teufen ZH in the Canton of Zurich...

    ; and
  • Hans Ulrich Grubenmann (23 March 1709 – 22 January 1783), died in Teufen.


The brothers were village carpenters in Teufen. The principal structures are known to be:
  • Crossing of the Rhine at Schaffhausen
    Schaffhausen
    Schaffhausen is a city in northern Switzerland and the capital of the canton of the same name; it has an estimated population of 34,587 ....

     in two spans of 52 m and 59 m respectively, (Hans Ulrich, 1757);
  • A single-span of 67 m at Reichenau, (Johannes, 1757);
  • Crossing of the Limmat
    Limmat
    The Limmat is a river in Switzerland. It is the continuation of the Linth river, known as Limmat from the point of effluence from Lake Zurich, in the city of Zurich. From Zurich it flows in a northwesterly direction, after 35 km reaching the river Aare...

     at Wettingen
    Wettingen
    Wettingen is a residential community in the district of Baden in the Swiss canton of Aargau. With a population about 20,000, Wettingen is the largest municipality in the canton.-Geography:...

    , a 60 m span thought to be the first use of a true arch
    Arch
    An arch is a structure that spans a space and supports a load. Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture and their systematic use started with the Ancient Romans who were the first to apply the technique to a wide range of structures.-Technical aspects:The...

     in a timber
    Timber
    Timber may refer to:* Timber, a term common in the United Kingdom and Australia for wood materials * Timber, Oregon, an unincorporated community in the U.S...

     bridge, (Hans Ulrich and Johannes, 1778).


Very few of their bridges have survived, those at Schaffhausen and Wettingen being burnt by the French
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 in the war of 1799, but their designs were influential, making use of novel combinations of arches and truss
Truss
In architecture and structural engineering, a truss is a structure comprising one or more triangular units constructed with straight members whose ends are connected at joints referred to as nodes. External forces and reactions to those forces are considered to act only at the nodes and result in...

es. The surviving bridges include:
  • Rümlangbrücke, Oberglatt
    Oberglatt
    Oberglatt is a municipality in the district of Dielsdorf in the canton of Zürich in Switzerland, and belongs to the Glatt Valley . Zürich Airport is partially in Oberglatt.-Geography:...

    , 27.5 m span
  • Hundwilertobel, 30 m span
  • Kubelbrücke, Herisau
    Herisau
    Herisau is a municipality of the canton of Appenzell Ausserrhoden in Switzerland. It is the seat of the canton's government and parliament; the judicial authorities are situated in Trogen....

    , 30 m span
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