Fibre saturation point FSP - Revision history

Designing Buildings at 10:31, 31 October 2022

2022-10-31T10:31:59Z

← Older revision		Revision as of 10:31, 31 October 2022
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−	Fibre Saturation Point (FSP) ~~is a term that generally~~ relates to the moisture content (MC) of timber. Saturation Point (SP) may also be used with reference to other materials such as soil, but in both cases it refers to the point at which ~~soil~~ pores or ~~wood~~ cells are full with water.	+	Fibre Saturation Point (FSP) relates to the moisture content (MC) of timber. Saturation Point (SP) may also be used with reference to other materials such as soil, but in both cases it refers to the point at which pores or cells are 'full' with water.

−	The FSP of timber will vary between species but it is normally accepted as averaging around 30%MC, that being the percentage ratio of the wet wood to the theoretical weight of the dry wood. This level of MC is significant because it is considered to be the point of reasonable movement ie when wood that is significantly above this MC level dries its physical and mechanical properties change, which can lead to deformation.	+	The FSP of timber will vary between species but it is normally accepted as averaging around 30%MC (moisture content), that being the percentage ratio of the wet wood to the theoretical weight of the dry wood. This level of MC is significant because it is considered to be the point of reasonable movement ie when wood that is significantly above this MC level dries its physical and mechanical properties change, which can lead to deformation.

−	Wood is hygroscopic so moisture levels can ~~relate~~ to the localised environment ~~but as~~ wood dries it shrinks, and as it absorbs moisture up it expands, the severity of which depends on the amount of moisture lost or gained. When wood is at the FSP of 30% further drying is less likely to cause significant deformation and therefore considered more stable or predictable in terms of being worked with.	+	Wood is hygroscopic so moisture levels can change in relation to the localised environment. As wood dries it shrinks, and as it absorbs moisture up it expands, the severity of which depends on the amount of moisture lost or gained. When wood is at the FSP of 30% further drying is less likely to cause significant deformation and it is therefore considered more stable or predictable in terms of being worked with.

−	The point at which timber stabilises in balance with the moisture of its own environment (which is normally below the FSP) is referred to as Equilibrium Moisture Content (EMC). This figure will vary depending on the species but more importantly with the moisture and temperature of the local environment, this hygroscopic characteristic of timber can be ~~benefitial~~ to internal environments when exposed internally.	+	The point at which timber stabilises in balance with the moisture of its own environment (which is normally below the FSP) is referred to as Equilibrium Moisture Content (EMC). This figure will vary depending on the species but more importantly with the moisture and temperature of the local environment, this hygroscopic characteristic of timber can be beneficial to internal environments when exposed internally. Fore more information see: Equilibrium Moisture Content.

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

Editor at 12:34, 7 October 2022

2022-10-07T12:34:38Z

← Older revision		Revision as of 12:34, 7 October 2022
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	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

−	~~<ul>~~	+	* Moisture content MC.
−	~~<li>Cavity wall insulation.</li>~~	+	* Mould growth.
−	~~<li>Condensation.</li>~~	+	* Recognising wood rot and insect damage in buildings.
−	~~<li>Damp.</li>~~	+	* Sacrificial timber.
−	~~<li>Damp proofing.</li>~~	+	* Timber.
−	~~<li>Dew point.</li>~~	+	* Timber preservation
−	~~<li>Humidity.</li>~~	+	* Types of water.
−	~~<li>Insulation.</li>~~	+	* Ventilation.
−	~~<li>~~Moisture content MC.~~</li>~~	+	* Wall insulation and moisture risk.
−	~~<li>~~Mould growth.~~</li>~~	+	* Water.
−	~~<li><p>Timber preservation</p></li>~~	+	* Water vapour.
−	~~<li>Types of water.</li>~~	+	* Wet rot.
−	~~<li>Ventilation.</li>~~	+
−	~~<li><p>~~Recognising wood rot and insect damage in buildings.~~</p>~~	+
−	~~<p>~~Sacrificial timber.~~</p>~~	+
−	~~<p>~~Timber.~~</p></li>~~	+
−	~~<li>~~Wall insulation and moisture risk.~~</li>~~	+
−	~~<li>~~Water.~~</li>~~	+
−	~~<li>~~Water vapour.~~</li>~~	+
−	~~<li><p>~~Wet rot.~~</p>~~	+
−	~~<p>Woodworm.</p>~~	+
−	~~<p>Woodworm and spiders.</p></li></ul>~~	+

−	[[Category:~~Articles_needing_more_work~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Specification]] [[Category:Definitions]] [[Category:Research_/_Innovation]] [[Category:Water]] [[Category:Standards_/_measurements]]

Editor at 11:56, 7 October 2022

2022-10-07T11:56:02Z

← Older revision		Revision as of 11:56, 7 October 2022
Line 1:		Line 1:
−	Fibre Saturation Point (FSP) is s term that generally relates to the moisture content (MC) of timber. Saturation Point (SP) may also be used with reference to other materials such as soil, but in both cases refers to the point at which soil pores or wood cells are full with water.	+	Fibre Saturation Point (FSP) is a term that generally relates to the moisture content (MC) of timber. Saturation Point (SP) may also be used with reference to other materials such as soil, but in both cases it refers to the point at which soil pores or wood cells are full with water.

−	~~In timber the~~ FSP will vary between species but it is normally accepted as ~~being~~ around 30%MC, that being the percentage ratio of the wet wood to the theoretical weight of the dry wood. ~~The true amount~~ of ~~moisture will vary depending on where in the section of wood it is measured, this level is taken as an average. This average~~ MC is significant because it is considered to be the point of reasonable movement ie when wood that is significantly above this MC level dries its physical and mechanical properties change, ~~leading~~ to deformation.	+	The FSP of timber will vary between species but it is normally accepted as averaging around 30%MC, that being the percentage ratio of the wet wood to the theoretical weight of the dry wood. This level of MC is significant because it is considered to be the point of reasonable movement ie when wood that is significantly above this MC level dries its physical and mechanical properties change, which can lead to deformation.

−	Wood is hygroscopic so ~~its~~ moisture ~~level~~ can ~~relates~~ to ~~its~~ environment but as it dries it shrinks, and as it ~~soaks up~~ moisture up it expands, the severity of ~~these actions will depend~~ on the amount of moisture lost or gained. When wood is at the FSP of 30% further drying is less likely to cause significant deformation and therefore considered more stable or predictable in terms of being worked.	+	Wood is hygroscopic so moisture levels can relate to the localised environment but as wood dries it shrinks, and as it absorbs moisture up it expands, the severity of which depends on the amount of moisture lost or gained. When wood is at the FSP of 30% further drying is less likely to cause significant deformation and therefore considered more stable or predictable in terms of being worked with.

−	The point at which timber stabilises with the moisture of its own environment (which is normally below the FSP) ~~it is considered to be in balance and~~ is referred to as Equilibrium Moisture Content (EMC). This figure will vary depending on the species but more importantly ~~the~~ the moisture and temperature of the environment, ~~it is a~~ characteristic of timber ~~that is considered a benefit~~ when ~~used~~ internally.	+	The point at which timber stabilises in balance with the moisture of its own environment (which is normally below the FSP) is referred to as Equilibrium Moisture Content (EMC). This figure will vary depending on the species but more importantly with the moisture and temperature of the local environment, this hygroscopic characteristic of timber can be benefitial to internal environments when exposed internally.
		+
		+	= Related articles on Designing Buildings =
		+
		+	<ul>
		+	<li>Cavity wall insulation.</li>
		+	<li>Condensation.</li>
		+	<li>Damp.</li>
		+	<li>Damp proofing.</li>
		+	<li>Dew point.</li>
		+	<li>Humidity.</li>
		+	<li>Insulation.</li>
		+	<li>Moisture content MC.</li>
		+	<li>Mould growth.</li>
		+	<li><p>Timber preservation</p></li>
		+	<li>Types of water.</li>
		+	<li>Ventilation.</li>
		+	<li><p>Recognising wood rot and insect damage in buildings.</p>
		+	<p>Sacrificial timber.</p>
		+	<p>Timber.</p></li>
		+	<li>Wall insulation and moisture risk.</li>
		+	<li>Water.</li>
		+	<li>Water vapour.</li>
		+	<li><p>Wet rot.</p>
		+	<p>Woodworm.</p>
		+	<p>Woodworm and spiders.</p></li></ul>

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor: Created page with "Fibre Saturation Point (FSP) is s term that generally relates to the moisture content (MC) of timber. Saturation Point (SP) may also be used with reference to other materials suc..."

2022-10-07T09:30:57Z

Created page with "Fibre Saturation Point (FSP) is s term that generally relates to the moisture content (MC) of timber. Saturation Point (SP) may also be used with reference to other materials suc..."

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Fibre Saturation Point (FSP) is s term that generally relates to the moisture content (MC) of timber. Saturation Point (SP) may also be used with reference to other materials such as soil, but in both cases refers to the point at which soil pores or wood cells are full with water.

In timber the FSP will vary between species but it is normally accepted as being around 30%MC, that being the percentage ratio of the wet wood to the theoretical weight of the dry wood. The true amount of moisture will vary depending on where in the section of wood it is measured, this level is taken as an average. This average MC is significant because it is considered to be the point of reasonable movement ie when wood that is significantly above this MC level dries its physical and mechanical properties change, leading to deformation.

Wood is hygroscopic so its moisture level can relates to its environment but as it dries it shrinks, and as it soaks up moisture up it expands, the severity of these actions will depend on the amount of moisture lost or gained. When wood is at the FSP of 30% further drying is less likely to cause significant deformation and therefore considered more stable or predictable in terms of being worked.

The point at which timber stabilises with the moisture of its own environment (which is normally below the FSP) it is considered to be in balance and is referred to as Equilibrium Moisture Content (EMC). This figure will vary depending on the species but more importantly the the moisture and temperature of the environment, it is a characteristic of timber that is considered a benefit when used internally.

[[Category:Articles_needing_more_work]]