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  1. A comparison of two methods for estimating conifer live foliar moisture content

    Foliar moisture content is an important factor regulating how wildland fires ignite in and spread through live fuels but moisture content determination methods are rarely standardised between studies. One such difference lies between the uses of rapid moisture analysers or drying ovens. Both of these methods are commonly used in live fuel research but they have never...

    Author(s):
    W. Matt Jolly; Ann M. Hadlow
    Year:
    2012
    Keywords:
    Computrac, fuel moisture, live fuels, oven-drying, rapid moisture analyser
    Source:
    International Journal of Wildland Fire. 21: 180-185.

  2. Interior moisture design loads for residences

    This paper outlines a methodology to obtain design values for indoor boundary conditions for moisture design calculations for residences. This is part of a larger effort by ASHRAE Standard Project Committee 160P, Design Criteria for Moisture Control in Buildings, to formulate criteria for moisture design loads, analysis techniques, and material and building performance...

    Author(s):
    Anton TenWolde; Iain S. Walker
    Year:
    2001
    Keywords:
    Wooden-frame houses, moisture, dampness in buildings, wood moisture, building moisture, dwelling moisture, building testing, wooden buildings, humidity control, environmental engineering, moisture content of wood in service, moisture content
    Source:
    Performance of exterior envelopes of whole buildings VIII [electronic resource] : integration of building envelopes. Atlanta, GA : American Society of Heating, Refrigerating and Air-Conditioning Engineers, c2001: ISBN: 1883413966: 6 pages.

  3. Summer evapotranspiration trends as related to time after logging of forests in Sierra Nevada

    Abstract - The quantity of summer soil moisture lost from logged forest openings was related to the length of time since the creation of the opening, in the subalpine forest zone of the Sierra Nevada west side, near the Central Sierra Snow Laboratory, California, at an elevation of 6000 to 7000 feet. Soil moisture depletion was measured in forest openings which were...

    Author(s):
    Robert R. Ziemer
    Year:
    1964
    Keywords:
    PSW4351, soils, soil moisture, evapotranspiration, loggin
    Source:
    Journal of Geophysical Research 69(4): 615-620.

  4. Effect of moisture cycling on truss-plate joint behavior

    The structural performance of wood trusses, which are now commonplace in light-frame construction, is dictated in part by the mechanical properties of the truss-plate joints. However, little information exists quantifying the effect of environmental conditions on truss-plate joint properties. The main objective of this paper was to quantify the effect of moisture...

    Author(s):
    Leslie H. Groom
    Year:
    1994
    Keywords:
    Source:
    Forest Prodcuts Journal 44(1):21-29

  5. Electric moisture meters for wood

    Electric moisture meters for wood measure electric conductance (resistance) or dielectric properties, which vary fairly consistently with moisture content when it is less than 30 percent. The two major classes of electric moisture meters are the conductance (resistance) type and the dielectric type. Conductance-t ype meters use penetrating electrodes that measure in a...

    Author(s):
    William L. James
    Year:
    1988
    Keywords:
    Moisture measurement, moisture meters, electric properties
    Source:
    Gen. Tech. Rep. FPL-GTR-6. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory; 1988. 17 p.

  6. Assessing topographic patterns in moisture use and stress using a water balance approach

    Through its control on soil moisture patterns, topography's role in influencing forest composition is widely recognized. This study addresses shortcomings in traditional moisture indices by employing a water balance approach, incorporating topographic and edaphic variability to assess fine-scale moisture demand and moisture availability. Using GIS and readily...

    Author(s):
    James M. Dyer
    Year:
    2009
    Keywords:
    Source:
    Landscape Ecology DOI: 10.1007/s10980-008-9316-6

  7. Drying and control of moisture content and dimensional changes

    In the living tree, wood contains large quantities of water. As green wood dries, most of the water is removed. The moisture remaining in the wood tends to come to equilibrium with the relative humidity of the surrounding air. Correct drying, handling, and storage of wood will minimize moisture content changes that might occur after drying when the wood is in service...

    Author(s):
    William T. Simpson
    Year:
    1999
    Keywords:
    Wood moisture, moisture content, drying, shrinkage, dimensions, structural timbers, warping
    Source:
    Wood handbook : wood as an engineering material. Madison, WI : USDA Forest Service, Forest Products Laboratory, 1999. General technical report FPL ; GTR-113: Pages 12.1-12.20

  8. The role of moisture content in above-ground leaching

    This paper reviews previous reports on the moisture content of wood exposed above ground and compares those values to moisture contents obtained using simulated rainfall and immersion methods. Laboratory leaching trials with CCA-treated specimens were also conducted and the results compared to published values for leaching of CCA-treated specimens exposed above ground...

    Author(s):
    Stan Lebow; Patricia Lebow
    Year:
    2007
    Keywords:
    Above ground, moisture content, leaching, simulated rainfall, immersion, rain, rainfall, wood preservatives, wood moisture, chromium, copper, arsenic, simulation methods, weathering, preservatives, chromated copper arsenate, moisture content, CCA
    Source:
    IRG/WP ; 07-50245. Stockholm, Sweden : IRG Secretariat, 2007. 15 pages.

  9. Effects of wood moisture content and the level of acetylation on brown rot decay

    Acetylation is one of the most common types of wood modifcation and is commercially available throughout the world. Many studies have shown that acetylated wood is decay resistant at high levels of acetylation. Despite its widespread use, the mechanism by which acetylation prevents decay is still not fully understood. It is well known that at a given water activity,...

    Author(s):
    Samuel L. Zelinka; Grant T. Kirker; Amy B. Bishell; Samuel V Glass
    Year:
    2020
    Keywords:
    Acetylated wood, wood modification, brown rot decay, fungal decay, soil block test, wood moisture content, soil bottle assays
    Source:
    Forests. 11(3): 299

  10. Measuring moisture content in living chaparral: a field user's manual

    This manual standardizes procedures for determining the moisture content of living chaparral for use in a proposed statewide system of monitoring living fuel moisture. The manual includes a comprehensive examination of fuel moisture variations in California chaparral, and describes techniques for sampling these variations. Equipment needed to sample and determine...

    Author(s):
    Clive M. Countryman; William A. Dean
    Year:
    1979
    Keywords:
    Fire management, chaparral, prescribed burning, fuel moisture, living wildland fuels, chamise, manzanita
    Source:
    General Technical Report PSW-036. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 28 p

  11. Electric moisture meters for wood

    Common methods of measuring the moisture content of wood are described briefly, and a short historical account of the development of electric moisture meters is given. Electrical properties of wood are discussed briefly, and the basic operation of the resistance type and the radio- frequency types of moisture meter is outlined. Data relating the electrical resistance...

    Author(s):
    William L. James
    Year:
    1963
    Keywords:
    Electric moisture meters, moisture meters, wood moisture
    Source:
    Research Note FPL-RN-08. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. [29] p.

  12. Predicting moisture content: fuel moisture indicator sticks in the Pacific Northwest.

    Successful day-to-day planning of presuppression activities requires accurate prediction of burning index. In the Pacific Northwest, forecasts of burning index are prepared by the fire-control man and are based on predictions of windspeed and fuel moisture. Although fuel moisture is affected by a number of weather elements and is consequently difficult to predict, the...

    Author(s):
    Owen P. Cramer
    Year:
    1961
    Keywords:
    Source:
    USDA Forest Service PNW Old Series Research Paper No. 41: 1-17

  13. The moisture content of ponderosa pine and whiteleaf manzanita foliage in the Central Sierra Nevada

    In the first year of studies of moisture in living fuels, pine and manzanita had dissimilar moisture trends, the moisture content of brush varied with elevation during the growing season, and soil moisture was correlated with brush foliage moisture.

    Author(s):
    Charles W. Philpot
    Year:
    1963
    Keywords:
    Source:
    Res. Note PSW-RN-039. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 7 p.

  14. Drying and control of moisture content and dimensional changes

    The discussion in this chapter is concerned with moisture content determination, recommended moisture content values, drying methods, methods of calculating dimensional changes, design factors affecting such changes in structures, and moisture content control during transit, storage, and construction. Data on green moisture content, fiber saturation point, shrinkage,...

    Author(s):
    Richard Bergman
    Year:
    2010
    Keywords:
    Wood moisture, moisture, lumber, wood drying, drying, humidity, veneers, veneering, plywood, building materials, dwellings, dampness in buildings, wood defects, moisture content, kiln drying, air drying, dimensional stability, green lumber, shrinkage, fiber saturation point, equilibrium moisture content
    Source:
    Wood handbook : wood as an engineering material: chapter 13. Centennial ed. General technical report FPL ; GTR-190. Madison, WI : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2010: p. 13.1-13.20.

  15. An examination of the sensitivity of numerically simulated wildfires to low-level atmospheric stability and moisture, and the consequences for the Haines Index

    The Haines Index, an operational fire-weather index introduced in 1988 and based on the observed stability and moisture content of the near-surface atmosphere, has been a useful indicator of the potential for high-risk fires in low wind conditions and flat terrain. The Haines Index is of limited use, however, as a predictor of actual fire behavior. To develop a fire-...

    Author(s):
    Mary Ann Jenkins
    Year:
    2002
    Keywords:
    coupled wildfire, atmospheric numerical modelling
    Source:
    International Journal of Wildland Fire 11:213-232

  16. Estimating moisture content of tree-length roundwood

    The green weight of southern pine tree-length roundwood delivered to the pulp mill is generally known. However, for optimum mill efficiency it is desirable to know dry weight. The moisture content of tree-length pine logs is quite variable. The moisture content of pine tree-length logs increases significantly with increasing stem height. Moisture content also varies...

    Author(s):
    Alexander Clark; Richard F. Daniels
    Year:
    2000
    Keywords:
    Source:
    Pulping/Process and Product Quality Conference, Sheraton Boston

  17. Moisture distributions in western hemlock lumber from trees harvested near Sitka, Alaska.

    Western hemlock (Tsuga heterophylla) can be characterized by localized regions of high-moisture-content wood, often referred to as wet pockets, and uneven drying conditions may occur when lumber of higher and lower moisture content is mixed together in a dry kiln. The primary objective of this preliminary study was to characterize the frequency and...

    Author(s):
    David L. Nicholls; Allen M. Brackley; Travis Allen
    Year:
    2003
    Keywords:
    Western hemlock, Tsuga heterophylla, lumber, drying, sawmill, moisture content, Alaska
    Source:
    Res. Note PNW-RN-530. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p

  18. Effects of size and moisture on stress wave E-rating of structural lumber

    This paper discusses the effects of size and moisture content on stress wave properties of wood and evaluates the...

    Author(s):
    Xiping Wang
    Year:
    2008
    Keywords:
    Wood grading, grading, flexure, mechanical properties, lumber, nondestructive testing, bending, moisture, stress waves, moisture content, elasticity, modulus of elasticity, wave mechanics, strength, structural timbers, bending strength, Douglas fir
    Source:
    Proceedings of the 10th world conference on timber engineering : Miyazaki, Japan, 2008 June 2-5. [S.l. : s.n.], 2008: [8] pages.

  19. Modeling seasonal changes in live fuel moisture and equivalent water thickness using a cumulative water balance index

    Live fuel moisture, an important determinant of fire danger in Mediterranean ecosystems, exhibits seasonal changes in response to soil water availability. Both drought stress indices based on meteorological data and remote sensing indices based on vegetation water absorption can be used to monitor live fuel moisture. In this study, a cumulative water balance index (...

    Author(s):
    Philip E. Dennison; Dar A. Roberts; Sommer R. Thorgusen; Jon C. Regelbrugge; David Weise; Christopher Lee
    Year:
    2003
    Keywords:
    Live fuel moisture, Equivalent water thickness, Cumulative water balance index
    Source:
    Remote Sensing of the Environment 88(4): 442-452

  20. Stress Wave E-Rating of Structural Timber—Size and Moisture Content Effects

    The objectives of this study were to investigate the influence of cross sectional size and moisture content on stress wave properties of structural timber in various sizes and evaluate the feasibility of using stress wave method to E-rate timber in green conditions. Four different sizes of Douglas-fir (Pseudotsuga menziesii) square timbers were...

    Author(s):
    Xiping Wang
    Year:
    2013
    Keywords:
    Stress wave, structural timber, modulus of elasticity, moisture content, size
    Source:
    In: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-226, 2013; pp. 38-46

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