Pitch pine
With pitch pine (from the English term pitch pine for the pitch pine , lat. Pinus rigida ) are called heavy and heartwood rich pine woods. The term does not designate a specific botanical species, but is a collective term in the timber industry for the best quality of softwood ("the hardest softwood in the world"), which is hardly available today. This heartwood sometimes has annual rings less than 1 mm wide, is very resinous and therefore heavy at approx. 710 g / dm³.
In the past, "pitch pine" was also one of several English terms for the swamp pine ( Pinus palustris ).
The pitch pine wood marketed worldwide comes from Canada, the southwest of the USA and Central America, especially from Honduras (Honduras Pitch Pine) from very old and large trees that have largely been felled there. Pitchpine is mainly used for the production of floor boards , wall and ceiling coverings . Since the wood was used very often as floorboards in buildings from the early days and the high quality wood used at the time is rare, there is a market for old floorboards .
In 1933, the radio stations founded in Germany in the previous years preferred to use pitch pine wood for the construction of transmission towers, including the one for the Bavarian Broadcasting Tower , then “Reichssender München” in Munich-Ismaning. The logs for a total of 3 transmission towers were transported from Canada to Europe by steamship. The wooden tower of the Ismaning transmitter was blown up in 1983 as the last wooden transmission tower still in existence in Germany. Carpenter's shops and carpenters removed some of the wood and used it, among other things, to build wooden winter gardens.
Web links
- Commercial Timbers from Latin America (accessed June 25, 2020)
Individual evidence
- ^ The transmitter Munich-Ismaning. wabweb.net, accessed April 18, 2017 .
- ↑ Martin Trauner: Last wooden transmission tower in Germany blown up. br.de, Bayern2, March 16, 2017, accessed April 18, 2017 .