{"title":"Troncs de robinier, bois rond de robinier","description":"\u003ch2\u003e Achetez des troncs et des rondins de robinier.\u003cbr\u003e\n\n\u003c\/h2\u003e\n\n \u003cp\u003eNous proposons \u003cstrong\u003edes troncs de robinier faux-acacia (Robinia pseudoacacia) cultivés naturellement, tortueux ou extra-droits.\u003c\/strong\u003e Le tronc de \u003cstrong\u003erobinier faux-acacia\u003c\/strong\u003e idéal pour chaque projet. Le robinier faux-acacia commun pousse généralement assez tortueux, ce qui est particulièrement recherché, par exemple, pour la création de structures d'escalade originales pour les aires de jeux pour enfants. Vous \u003cstrong\u003epouvez acheter\u003c\/strong\u003e chez nous \u003cstrong\u003edes troncs de robinier faux-acacia\u003c\/strong\u003e adaptés à vos besoins.\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp\u003e On utilise \u003cstrong\u003edes troncs de robinier extra-droits\u003c\/strong\u003e , par exemple pour les pilotis d'une cabane de jeux, d'une balançoire, d'une terrasse surélevée ou encore pour les pieux d'un quai de baignade ou d'un ponton. Lorsqu'on souhaite utiliser \u003cstrong\u003edes troncs de robinier\u003c\/strong\u003e pour créer un bac à sable ou délimiter un espace, on a généralement besoin de troncs droits.\u003c\/p\u003e\n\n \u003cp\u003eNous nous approvisionnons \u003cstrong\u003een troncs de robinier\u003c\/strong\u003e extra-droits auprès de nos propres forêts de la variété rare de robinier.\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eLe Robinia pseudoacacia rectissima L.\u003c\/em\u003e , également appelé robinier faux-acacia, est particulièrement adapté à nos produits grâce à sa croissance exceptionnellement droite, contrairement au robinier commun. Afin de garantir \u003cstrong\u003edes grumes de robinier\u003c\/strong\u003e irréprochables, nous procédons également à une taille précoce des troncs. Ce travail, bien que conséquent, est payant, car il permet d'obtenir des grumes exemptes d'irrégularités importantes dues aux branches ou aux fourches. Vous pouvez \u003cstrong\u003eacheter cette grume de robinier\u003c\/strong\u003e chez nous.\u003cbr\u003e\u003c\/p\u003e\n\n \u003cp\u003eLe robinier utilisé pour les mâts de navires possède une densité de bois particulièrement élevée, ce qui lui confère une résistance et une durabilité exceptionnelles. Ces \u003cstrong\u003etroncs en robinier\u003c\/strong\u003e peuvent durer des décennies. Nos \u003cstrong\u003etroncs en robinier\u003c\/strong\u003e sont donc d'une qualité irréprochable à tous égards. Vous trouverez des informations complètes sur le bois de robinier \u003cspan\u003e\u003ca href=\"https:\/\/robinia24.de\/pages\/eigenschaften-robinienholz\"\u003eici\u003c\/a\u003e .\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003ch2\u003e Bois rond de robinier - plusieurs options s'offrent à vous : écorcé, sans aubier et poncé, naturellement tordu ou extra droit.\u003cbr\u003e\n\n\u003c\/h2\u003e\n\n\u003cp\u003e Après l'écorçage, les \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e sont soigneusement débarrassés des résidus de liber et rabotés. Le rabotage consiste à éliminer les moignons de branches saillants et autres irrégularités.\u003c\/p\u003e\n\n\u003cp\u003e Si vous sélectionnez l'option « … poncée », les bûches seront poncées sur toutes leurs faces avec du papier de verre à gros grain.\u003c\/p\u003e\n\n\u003cp\u003e Nous fournissons généralement les \u003cstrong\u003egrumes de robinier faux-acacia\u003c\/strong\u003e avec un chanfrein aux deux extrémités.\u003c\/p\u003e\n\n \u003cp\u003e\u003c\/p\u003e\n\n\u003c!----\u003e","products":[{"product_id":"robinienstamme-extragerade-geschalt-geglattet-und-geschliffen","title":"Troncs de robinier, extra droits, écorcés, lissés et poncés","description":"\u003cp\u003eLe bois de robinier est le choix idéal pour une utilisation extérieure, même en pleine terre. Aucun autre bois indigène n'offre une durabilité comparable (voir la page sur les \u003ca href=\"https:\/\/robinia24.de\/pages\/eigenschaften-robinienholz\" title=\"Propriétés du bois de robinier\"\u003epropriétés du bois de robinier\u003c\/a\u003e ). Cela ne signifie pas pour autant qu'une isolation contre le sol est inutile. Deux couches de bitume liquide (jusqu'à environ 20 cm au-dessus du sol) ou l'enrobage des rondins dans du béton ou du gravier prolongeront considérablement leur durée de vie. Ainsi, vos rondins dureront des décennies.\u003c\/p\u003e\n\n\u003cp\u003e Ces \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e « extra droits » proviennent de variétés particulières, appelées robinier faux-acacia à mât de navire, qui poussent presque parfaitement droits. (Le robinier faux-acacia sauvage a généralement un tronc plus ou moins courbé.) Cependant, les \u003cstrong\u003etroncs\u003c\/strong\u003e ne sont pas parfaitement droits ; la nature est la nature. On peut également observer des renflements et des creux, notamment dus à des branches incrustées.\u003c\/p\u003e\n\n \u003cp\u003eL'écorce des \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e a été enlevée, ainsi que le liber. Les irrégularités les plus importantes ont été rabotées (lissées). Enfin, les troncs ont été poncés.\u003c\/p\u003e\n\n\u003cp\u003e Les extrémités du tronc sont sciées droites, à un angle de 90° par rapport à l'axe du tronc, et chanfreinées.\u003c\/p\u003e\n\n\u003cp\u003e En choisissant le bois de robinier, vous optez pour un merveilleux produit de la nature. Il ne s'agit pas d'un matériau artificiel et standardisé. Chaque pièce possède sa propre individualité, sa propre vitalité grâce à certaines irrégularités.\u003c\/p\u003e\n\n\u003cp\u003e Tolérances dimensionnelles : Le diamètre diminue naturellement d’environ 1 cm par mètre de longueur de tronc. La plage de diamètre spécifiée s’applique au centre du tronc (diamètre médian). Il est à noter que la section transversale du tronc n’est pas parfaitement circulaire ; le diamètre indiqué est un diamètre moyen. La tolérance sur la plage de diamètre spécifiée est de 10 %. La longueur du tronc spécifiée est soumise à une tolérance de 2 cm.\u003c\/p\u003e\n\n \u003cp\u003eDéformation et fissuration : le bois « vit » car son taux d’humidité – qui dépend de l’humidité ambiante et du climat – influe sur ses dimensions et ses contraintes internes. En pratique, les dimensions peuvent varier jusqu’à 6 % perpendiculairement au fil (radialement, tangentiellement), tandis que les variations longitudinales (axialement) sont minimes.\u003c\/p\u003e\n\n\u003cp\u003e Les déformations et les fissures du bois libèrent des contraintes internes plus importantes. Il faut en tenir compte. (Nos ancêtres, dont le bois était le matériau principal, procédaient ainsi ; nous avons tendance à l’oublier aujourd’hui.)\u003c\/p\u003e\n\n\u003cp\u003e Ce qui précède est d'autant plus vrai que le bois est dur ; le bois de robinier est le plus dur de tous les bois.\u003c\/p\u003e\n\n\u003cp\u003e Il est difficile de prévoir avec certitude comment le bois se déforme et se fissure. Plus le bois est sec, plus le retrait volumique est important et, en principe, plus les fissures seront nombreuses et larges. Il peut y avoir plusieurs fissures, ou les dégâts peuvent être concentrés dans une seule grande fissure.\u003c\/p\u003e\n\n \u003cp\u003eEn revanche, l'épaisseur du bois est cruciale. Plus le bois est épais, plus le retrait volumique « compensé » par les fissures est important, en valeur absolue. Les fissures sont inévitables pour des épaisseurs de bois de 6 cm et plus, même avec un séchage soigné.\u003c\/p\u003e\n\n\u003cp\u003e Le climat ambiant peut varier considérablement en fonction de la région, du microclimat du lieu et de la présence de soleil ou d'ombre.\u003c\/p\u003e\n\n\u003cp\u003e Comme nous ignorons les conditions climatiques du lieu d'installation, nous livrons les poteaux semi-secs, c'est-à-dire avec un taux d'humidité du bois d'environ 30 % maximum. Ceci limite l'apparition à de légères fissures, proportionnelles à l'épaisseur (voir ci-dessus). Dans un endroit humide et complètement ombragé, le bois ne séchera pratiquement plus.\u003c\/p\u003e\n\n\u003cp\u003e Un séchage rapide du bois, même au soleil ou à l'abri, accentue les tensions internes. Cela peut entraîner des déformations et des fissures importantes. Si vous devez entreposer du bois, veuillez le faire dans un endroit frais et ombragé.\u003c\/p\u003e\n\n \u003cp\u003eImportant : Les fissures n'altèrent pas la résistance, la capacité de charge ni la durée de vie du bois.\u003c\/p\u003e","brand":"Robinia 24","offers":[{"title":"50 cm \/ 8-10 cm","offer_id":56367536570699,"sku":"04.02.04.-0001","price":7.47,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 10-12 cm","offer_id":56367536603467,"sku":"04.02.04.-0002","price":11.15,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 12-14 cm","offer_id":56367536636235,"sku":"04.02.04.-0003","price":15.58,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 14-16 cm","offer_id":56367536669003,"sku":"04.02.04.-0004","price":20.74,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 16-18 cm","offer_id":56367536701771,"sku":"04.02.04.-0005","price":26.64,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 17-20 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Aucun autre bois indigène n'offre une durabilité comparable ; consultez la page sur \u003ca href=\"https:\/\/robinia24.de\/pages\/eigenschaften-robinienholz\" title=\"Propriétés du bois de robinier\"\u003eles propriétés du bois de robinier\u003c\/a\u003e . Cela ne signifie pas pour autant qu'une isolation contre le sol est inutile. Deux couches de bitume liquide (jusqu'à environ 20 cm au-dessus du sol) ou l'enrobage des rondins dans du béton ou du gravier prolongeront considérablement leur durée de vie. Ainsi, vos rondins dureront des décennies.\u003c\/p\u003e\n\n \u003cp\u003eCes \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e « extra droits » proviennent de variétés particulières, appelées robinier faux-acacia à mât de navire, qui poussent presque parfaitement droits. (Le robinier faux-acacia sauvage a généralement un tronc plus ou moins courbé.) Cependant, les \u003cstrong\u003etroncs\u003c\/strong\u003e ne sont pas parfaitement droits ; la nature est la nature. On peut également observer des renflements et des creux, notamment dus à des branches incrustées.\u003c\/p\u003e\n\n\u003cp\u003e Seule l'écorce a été retirée (pelée) des \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e . Ils sont donc rugueux. Les extrémités des troncs sont sciées droites, à angle droit par rapport à l'axe du tronc.\u003c\/p\u003e\n\n\u003cp\u003e En choisissant le bois de robinier, vous optez pour un merveilleux produit de la nature. Il ne s'agit pas d'un matériau artificiel et standardisé. Chaque pièce possède sa propre individualité, sa propre vitalité grâce à certaines irrégularités.\u003c\/p\u003e\n\n \u003cp\u003eTolérances dimensionnelles : Le diamètre diminue naturellement d’environ 1 cm par mètre de longueur de tronc. La plage de diamètre spécifiée s’applique au centre du tronc (diamètre médian). Il est à noter que la section transversale du tronc n’est pas parfaitement circulaire ; le diamètre indiqué est un diamètre moyen. La tolérance sur la plage de diamètre spécifiée est de 10 %. La longueur du tronc spécifiée est soumise à une tolérance de 2 cm.\u003c\/p\u003e\n\n\u003cp\u003e Déformation et fissuration : le bois « vit » car son taux d’humidité – qui dépend de l’humidité ambiante et du climat – influe sur ses dimensions et ses contraintes internes. En pratique, les dimensions peuvent varier jusqu’à 6 % perpendiculairement au fil (radialement, tangentiellement), tandis que les variations longitudinales (axialement) sont minimes.\u003c\/p\u003e\n\n \u003cp\u003eLes déformations et les fissures du bois libèrent des contraintes internes plus importantes. Il faut en tenir compte. (Nos ancêtres, dont le bois était le matériau principal, procédaient ainsi ; nous avons tendance à l’oublier aujourd’hui.)\u003c\/p\u003e\n\n\u003cp\u003e Ce qui précède est d'autant plus vrai que le bois est dur ; le bois de robinier est le plus dur de tous les bois.\u003c\/p\u003e\n\n\u003cp\u003e Il est difficile de prévoir avec certitude comment le bois se déforme et se fissure. Plus le bois est sec, plus le retrait volumique est important et, en principe, plus les fissures seront nombreuses et larges. Il peut y avoir plusieurs fissures, ou les dégâts peuvent être concentrés dans une seule grande fissure.\u003c\/p\u003e\n\n\u003cp\u003e En revanche, l'épaisseur du bois est cruciale. Plus le bois est épais, plus le retrait volumique « compensé » par les fissures est important, en valeur absolue. Les fissures sont inévitables pour des épaisseurs de bois de 6 cm et plus, même avec un séchage soigné.\u003c\/p\u003e\n\n\u003cp\u003e Le climat ambiant peut varier considérablement en fonction de la région, du microclimat du lieu, de l'ensoleillement ou de l'ombre.\u003c\/p\u003e\n\n \u003cp\u003eComme nous ignorons les conditions climatiques du lieu d'installation, nous livrons les poteaux semi-secs, c'est-à-dire avec un taux d'humidité du bois d'environ 30 % maximum. Ceci limite l'apparition à de légères fissures, proportionnelles à l'épaisseur (voir ci-dessus). Dans un endroit humide et complètement ombragé, le bois ne séchera pratiquement plus.\u003c\/p\u003e\n\n\u003cp\u003e Un séchage rapide du bois, même au soleil ou à l'abri, accentue les tensions internes. Cela peut entraîner des déformations et des fissures importantes. Si vous devez entreposer du bois, veuillez le faire dans un endroit frais et ombragé.\u003c\/p\u003e\n\n\u003cp\u003e Important : Les fissures n'altèrent pas la résistance, la capacité de charge ni la durée de vie du bois.\u003c\/p\u003e\n\n\u003c!----\u003e","brand":"Robinia 24","offers":[{"title":"50 cm \/ 8-10 cm","offer_id":56367532638539,"sku":"04.01.07.-0001","price":6.22,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 10-12 cm","offer_id":56367532671307,"sku":"04.01.07.-0002","price":9.29,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 12-14 cm","offer_id":56367532704075,"sku":"04.01.07.-0003","price":12.98,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 14-16 cm","offer_id":56367532736843,"sku":"04.01.07.-0004","price":17.28,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 16-18 cm","offer_id":56367532769611,"sku":"04.01.07.-0005","price":22.2,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 17-20 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Aucun autre bois indigène n'offre une durabilité comparable ; consultez notre page sur \u003ca title=\"Propriétés du bois de robinier\" href=\"https:\/\/robinia24.de\/pages\/eigenschaften-robinienholz\"\u003eles propriétés du bois de robinier.\u003c\/a\u003e Cela ne signifie pas pour autant qu'une isolation contre le sol est inutile. Appliquer deux couches de bitume liquide (jusqu'à environ 20 cm au-dessus du sol) ou sceller les rondins dans du béton ou du gravier prolongera considérablement leur durée de vie. Ainsi, vos rondins dureront des décennies.\u003c\/p\u003e\n\n \u003cp\u003eCes \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e proviennent de la forme sauvage de cet arbre. Cette forme sauvage présente généralement un tronc plus ou moins courbé (contrairement au robinier faux-acacia à mâts, qui pousse très droit – voir \u003ca title=\"Troncs de robinier, extra droits, pelés et lissés\" href=\"https:\/\/robinia24.de\/products\/robinienstamme-extra-gerade-geschalt-und-geglattet\"\u003eles troncs de robinier faux-acacia extra-droits, écorcés et lissés\u003c\/a\u003e ). La courbure n'est pas excessive et ne pose aucun problème, par exemple pour une balançoire, une cabane dans les arbres ou une aire de jeux.\u003c\/p\u003e\n\n\u003cp\u003e Seule l'écorce a été retirée (pelée) des \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e . Ils sont donc rugueux. Les extrémités des troncs sont sciées droites, à angle droit par rapport à l'axe du tronc.\u003c\/p\u003e\n\n\u003cp\u003e En choisissant le bois de robinier, vous optez pour un merveilleux produit de la nature. Il ne s'agit pas d'un matériau artificiel et standardisé. Chaque pièce possède sa propre individualité, sa propre vitalité grâce à certaines irrégularités.\u003c\/p\u003e\n\n \u003cp\u003eTolérances dimensionnelles : Le diamètre diminue naturellement d’environ 1 cm par mètre de longueur de tronc. La plage de diamètre spécifiée s’applique au centre du tronc (diamètre médian). Il est à noter que la section transversale du tronc n’est pas parfaitement circulaire ; le diamètre indiqué est un diamètre moyen. La tolérance sur la plage de diamètre spécifiée est de 10 %. La longueur du tronc spécifiée est soumise à une tolérance de 2 cm.\u003c\/p\u003e\n\n\u003cp\u003e Déformation et fissuration : le bois « vit » car son taux d’humidité – qui dépend de l’humidité ambiante et du climat – influe sur ses dimensions et ses contraintes internes. En pratique, les dimensions peuvent varier jusqu’à 6 % perpendiculairement au fil (radialement, tangentiellement), tandis que les variations longitudinales (axialement) sont minimes.\u003c\/p\u003e\n\n \u003cp\u003eLes déformations et les fissures du bois libèrent des contraintes internes plus importantes. Il faut en tenir compte. (Nos ancêtres, dont le bois était le matériau principal, procédaient ainsi ; nous avons tendance à l’oublier aujourd’hui.)\u003c\/p\u003e\n\n\u003cp\u003e Ce qui précède est d'autant plus vrai que le bois est dur ; le bois de robinier est le plus dur de tous les bois.\u003c\/p\u003e\n\n\u003cp\u003e Il est difficile de prévoir avec certitude comment le bois se déforme et se fissure. Plus le bois est sec, plus le retrait volumique est important et, en principe, plus les fissures seront nombreuses et larges. Il peut y avoir plusieurs fissures, ou les dégâts peuvent être concentrés dans une seule grande fissure.\u003c\/p\u003e\n\n\u003cp\u003e En revanche, l'épaisseur du bois est cruciale. Plus le bois est épais, plus le retrait volumique « compensé » par les fissures est important, en valeur absolue. Les fissures sont inévitables pour des épaisseurs de bois de 6 cm et plus, même avec un séchage soigné.\u003c\/p\u003e\n\n\u003cp\u003e Le climat ambiant peut varier considérablement en fonction de la région, du microclimat du lieu, de l'ensoleillement ou de l'ombre.\u003c\/p\u003e\n\n \u003cp\u003eComme nous ignorons les conditions climatiques du lieu d'installation, nous livrons les poteaux semi-secs, c'est-à-dire avec un taux d'humidité du bois d'environ 30 % maximum. Ceci limite l'apparition à de légères fissures, proportionnelles à l'épaisseur (voir ci-dessus). Dans un endroit humide et complètement ombragé, le bois ne séchera pratiquement plus.\u003c\/p\u003e\n\n\u003cp\u003e Un séchage rapide du bois, même au soleil ou à l'abri, accentue les tensions internes. Cela peut entraîner des déformations et des fissures importantes. Si vous devez entreposer du bois, veuillez le faire dans un endroit frais et ombragé.\u003c\/p\u003e\n\n\u003cp\u003e Important : Les fissures n'altèrent pas la résistance, la capacité de charge ni la durée de vie du bois.\u003c\/p\u003e\n\n\u003c!----\u003e","brand":"Robinia 24","offers":[{"title":"50 cm \/ 8-10 cm","offer_id":56284954853707,"sku":"04.01.02.-0001","price":4.62,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 10-12 cm","offer_id":56284954886475,"sku":"04.01.02.-0002","price":6.9,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 12-14 cm","offer_id":56284954919243,"sku":"04.01.02.-0003","price":9.64,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 14-16 cm","offer_id":56284954952011,"sku":"04.01.02.-0004","price":12.83,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 16-18 cm","offer_id":56284954984779,"sku":"04.01.02.-0005","price":16.48,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 17-20 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extérieure, même en pleine terre. Aucun autre bois indigène n'offre une durabilité comparable ; consultez la page sur \u003ca title=\"Propriétés du bois de robinier\" href=\"https:\/\/robinia24.de\/pages\/eigenschaften-robinienholz\"\u003eles propriétés du bois de robinier\u003c\/a\u003e . Cela ne signifie pas pour autant qu'une isolation contre le sol est inutile. Deux couches de bitume liquide (jusqu'à environ 20 cm au-dessus du sol) ou l'enrobage des rondins dans du béton ou du gravier prolongeront considérablement leur durée de vie. Ainsi, vos rondins dureront des décennies.\u003c\/p\u003e\n\n \u003cp\u003eCes \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e proviennent de la forme sauvage de cet arbre. Cette forme sauvage présente généralement un tronc plus ou moins courbé (contrairement au robinier faux-acacia cultivé en sphaigne, qui pousse très droit – voir \u003ca title=\"Troncs de robinier, extra droits, écorcés, lissés et poncés\" href=\"https:\/\/robinia24.de\/products\/robinienstamme-extragerade-geschalt-geglattet-und-geschliffen\"\u003eles troncs de robinier faux-acacia extra-droits, écorcés, lissés et poncés\u003c\/a\u003e ). La courbure n'est pas excessive et ne pose aucun problème, par exemple pour une balançoire, une cabane dans les arbres ou une aire de jeux.\u003c\/p\u003e\n\n\u003cp\u003e L'écorce et l'aubier des \u003cstrong\u003etroncs de robinier faux-acacia\u003c\/strong\u003e ont été enlevés, puis ces troncs ont été poncés. Ils conviennent particulièrement lorsqu'une surface lisse est recherchée. Cette surface lisse est durable car le bois de cœur restant est beaucoup moins sensible aux intempéries que l'aubier (qui a été éliminé).\u003c\/p\u003e\n\n\u003cp\u003e Les extrémités du tronc sont sciées droites, à un angle de 90° par rapport à l'axe du tronc.\u003c\/p\u003e\n\n \u003cp\u003eEn choisissant le bois de robinier, vous optez pour un merveilleux produit de la nature. Il ne s'agit pas d'un matériau artificiel et standardisé. Chaque pièce possède sa propre individualité, sa propre vitalité grâce à certaines irrégularités.\u003c\/p\u003e\n\n\u003cp\u003e Tolérances dimensionnelles : Le diamètre diminue naturellement d’environ 1 cm par mètre de longueur de tronc. La plage de diamètre spécifiée s’applique au centre du tronc (diamètre médian). Il est à noter que la section transversale du tronc n’est pas parfaitement circulaire ; le diamètre indiqué est un diamètre moyen. La tolérance sur la plage de diamètre spécifiée est de 10 %. La longueur du tronc spécifiée est soumise à une tolérance de 2 cm.\u003c\/p\u003e\n\n \u003cp\u003eDéformation et fissuration : le bois « vit » car son taux d’humidité – qui dépend de l’humidité ambiante et du climat – influe sur ses dimensions et ses contraintes internes. En pratique, les dimensions peuvent varier jusqu’à 6 % perpendiculairement au fil (radialement, tangentiellement), tandis que les variations longitudinales (axialement) sont minimes.\u003c\/p\u003e\n\n\u003cp\u003e Les déformations et les fissures du bois libèrent des contraintes internes plus importantes. Il faut en tenir compte. (Nos ancêtres, dont le bois était le matériau principal, procédaient ainsi ; nous avons tendance à l’oublier aujourd’hui.)\u003c\/p\u003e\n\n\u003cp\u003e Ce qui précède est d'autant plus vrai que le bois est dur ; le bois de robinier est le plus dur de tous les bois.\u003c\/p\u003e\n\n\u003cp\u003e Il est difficile de prévoir avec certitude comment le bois se déforme et se fissure. Plus le bois est sec, plus le retrait volumique est important et, en principe, plus les fissures seront nombreuses et larges. Il peut y avoir plusieurs fissures, ou les dégâts peuvent être concentrés dans une seule grande fissure.\u003c\/p\u003e\n\n \u003cp\u003eEn revanche, l'épaisseur du bois est cruciale. Plus le bois est épais, plus le retrait volumique « compensé » par les fissures est important, en valeur absolue. Les fissures sont inévitables pour des épaisseurs de bois de 6 cm et plus, même avec un séchage soigné.\u003c\/p\u003e\n\n\u003cp\u003e Le climat ambiant peut varier considérablement en fonction de la région, du microclimat du lieu, de l'ensoleillement ou de l'ombre.\u003c\/p\u003e\n\n\u003cp\u003e Comme nous ignorons les conditions climatiques du lieu d'installation, nous livrons les poteaux semi-secs, c'est-à-dire avec un taux d'humidité du bois d'environ 30 % maximum. Ceci limite l'apparition à de légères fissures, proportionnelles à l'épaisseur (voir ci-dessus). Dans un endroit humide et complètement ombragé, le bois ne séchera pratiquement plus.\u003c\/p\u003e\n\n\u003cp\u003e Un séchage rapide du bois, même au soleil ou à l'abri, accentue les tensions internes. Cela peut entraîner des déformations et des fissures importantes. Si vous devez entreposer du bois, veuillez le faire dans un endroit frais et ombragé.\u003c\/p\u003e\n\n \u003cp\u003eImportant : Les fissures n'altèrent pas la résistance, la capacité de charge ni la durée de vie du bois.\u003c\/p\u003e\n\n\u003c!----\u003e","brand":"Robinia 24","offers":[{"title":"50 cm \/ 8-10 cm","offer_id":56367530017099,"sku":"04.01.09.-0001","price":5.53,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 10-12 cm","offer_id":56367530049867,"sku":"04.01.09.-0002","price":8.27,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 12-14 cm","offer_id":56367530082635,"sku":"04.01.09.-0003","price":11.55,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 14-16 cm","offer_id":56367530115403,"sku":"04.01.09.-0004","price":15.37,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 16-18 cm","offer_id":56367530148171,"sku":"04.01.09.-0005","price":19.75,"currency_code":"EUR","in_stock":true},{"title":"50 cm \/ 17-20 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