CHÂTAIGNIER - Cirad

1 CH TAIGNIERPage 1of 426/03/2012 TROPIX 7 - 1998-2011 Cirad - Dissemination without express authorization is prohibitedFAGACEAE (angiosperm)Family:Scientific name(s):Castanea sativaCommercial restriction:no commercial restriction2560pointlessgoodabsentstraig htmediumclearly demarcatedlight yellowLOG DESCRIPTIONWOOD DESCRIPTIONC olor:Sapwood:Texture:Grain:Interlocked grain:Diameter:Thickness of sapwood:Floats:Log durability:fromtocmLight yellow wood to yellowish :0,642,90,426,94,230moderately stable467113300 PHYSICAL PROPERTIES1,6 MECHANICAL AND ACOUSTIC PROPERTIESS pecific gravity *:Monnin hardness *:Coeff. of volumetric shrinkage:Total tangential shrinkage (TS):Total radial shrinkage (RS):Fiber saturation point:MeanStd and mechanical properties are based on mature heartwood specimens.

2 These properties can vary greatly depending on origin and ratio:Stability:Crushing strength *:MeanStd bending strength *:Modulus of elasticity *:(*: at 12% moisture content, with 1 MPa = 1 N/mm )Musical quality factor:%%%%MPaMPaMPa95,8 measured at 2546 Hzclass 3 - not in ground contact, outsideclass 4 - not permeableclass M - moderately durabledurable - sapwood demarcated (risk limited to sapwood)class 2 - durableNATURAL DURABILITY AND TREATABILITYF unghi (according to standards):Dry wood borers:Termites (according to standards):Treatability (according to standards):Use class ensured by natural durability:Species covering the use class 5:Fungi and termite resistance refers to end-uses under temperate climate. Except for special comments on sapwood, natural durability is based on matureheartwood.

3 Sapwood must always be considered as non-durable against wood degrading = Euro NormNoThis species is listed in the European standard NF EN is linked to the presence of water soluble tanins. It decreases with tanins washing in caseof harsh to the European standard NF EN 335, performance length might be modified by theintensity of end-use :REQUIREMENT OF A PRESERVATIVE TREATMENTA gainst dry wood borer attacks:In case of risk of temporary humidification:In case of risk of permanent humidification:does not require any preservative treatmentdoes not require any preservative treatmentuse not recommendedCH TAIGNIERPage 2/426/03/2012 TROPIX 7 - 1998-2011 Cirad - Dissemination without express authorization is prohibitedDRYING normal to slowslight risknohigh riskyesDrying rate:Risk of distortion:Risk of casehardening:Risk of checking:Risk of collapse:Possible drying schedule.

4 (%)dry-bulbwet-bulbAir humidity (%)Temperature ( C)Green424194504843743054466320605162156 051626 Risk of humidity schedule is given for information only and is applicable to thickness lower or equal to 38 must be used in compliance with the code of thickness from 38 to 75 mm, the air relative humidity should be increased by 5 % at each thickness over 75 mm, a 10 % increase should be AND MACHINING normalordinary or alloy steelordinarygoodnoodBlunting effect:Sawteeth recommended:Cutting tools:Peeling:Slicing:Wood easy to split (manufacturing of split shingles).Note:ASSEMBLING good but pre-boring necessarycorrectNailing / screwing:Gluing:Must be carefull for nailing and screwing because of the wood's great tendancy to split (small nail diameter, no nail near theends and need for pre-holes in case of screwing).

5 Nail or screw corrosion if in contact with :Thickness > 14 mm : (moderately inflammable)Thickness < 14 mm : (easily inflammable)Conventional French grading:FIRE SAFETYD s2 d0 Default grading for solid wood, according to requirements of European standard EN 14081-1 annex C (April2009). It concerns structural graded timber in vertical uses with mean density upper and thickness upper22 grading:END-USESF looringInterior joineryInterior panellingCabinetwork (high class furniture)Exterior joinerySliced veneerExterior panellingHeavy carpentryCooperageShinglesStakesFiber or particle boardsTanins create a risk of smudges on woods if not well dried or if processed in a non protected area or if no product is used for protection or.

6 CH TAIGNIERPage 3/426/03/2012 TROPIX 7 - 1998-2011 Cirad - Dissemination without express authorization is prohibitedMAIN LOCAL NAMESC ountryLocal nameCountryLocal nameEDELKASTANIEG ermany (temperate timber)KASTANIENBAUMG ermany (temperate timber)CASTA OSpain (temperate timber)CH TAIGNIERF rance (temperate timber)CASTAGNOI talia (temperate timber)CHESTNUTU nited Kingdom (temperate timber)SWEET CHESTNUTU nited Kingdom (temperate timber)CH TAIGNIERPage 4/426/03/2012 TROPIX 7 - 1998-2011 Cirad - Dissemination without express authorization is prohibit