Tow
A towing hood is a chimney that is installed at the angle of a sloping roof, i.e. an outer corner of a building.
In the case of pitched roofs, it is often required that the chimney head is led above the ridge height of the roof. If the chimney passes through the roof cladding near the eaves , it would have to be walled up so high that it would be difficult to ensure stability without providing special bracing . Alternatively, in the past, the chimney was often built following the sloping roof or at any other angle upwards towards the roof ridge. This is also known as chimney warping or dragging .
advantages
The chimney head is usually built from more expensive facing bricks or clinker bricks and with a greater wall thickness than the part of the chimney that is in the building. As a result of the warping, the otherwise very heavy and high chimney head can now turn out to be small. This saves costs and weight. In addition, the upper part of the chimney is supported without any special effort when it passes through the roof structure , since the chimney head only protrudes slightly over the roof skin. Sometimes two chimneys were brought together by being dragged away and end in a common chimney.
disadvantage
Settlement of the roof structure tends to lead to the formation of cracks in warped chimneys, especially at the kinks (the knees ), as the weight of the inclined masonry partially weighs on the roof structure. This increases the risk of fire. Sweeping the chimney is made more difficult because it is not easy for the chimney sweep to guide the ball around the kinks and through the slope. Soot can settle on the gussets and in the slope, which can ignite and cause a fire.
history
The prevention of a fire served the orders under Palatine Count Karl IV. From the year 1772 about the removal of chips every evening in the workshops of the carpenters , Wagner and Bender , as well as the daily extinguishing of the stove and stove fire at certain evening hours. According to the simultaneous building regulations, no more wooden chimneys were allowed to be erected, no more wooden hoses were allowed to be installed, which had to lead the smoke from the fireplace to the fireplace , just as it was forbidden to lead stove pipes out of the window.
Individual evidence
- ↑ Fire of Lichtenwalde Castle (1905)
- ^ Franz-Josef Sehr : The fire extinguishing system in Obertiefenbach from earlier times . In: Yearbook for the Limburg-Weilburg district 1994 . The district committee of the Limburg-Weilburg district, Limburg-Weilburg 1993, p. 151-153 .