Last edited by Nabar
Friday, August 7, 2020 | History

2 edition of Pilot study of moisture control in stuccoed straw bale walls found in the catalog.

Pilot study of moisture control in stuccoed straw bale walls

Bob Platts

Pilot study of moisture control in stuccoed straw bale walls

report

by Bob Platts

  • 368 Want to read
  • 12 Currently reading

Published by The Corp. in Ottawa .
Written in English

    Subjects:
  • Dampness in buildings,
  • Exterior walls -- Design and construction,
  • Humidity -- Control,
  • Straw bale houses -- Design and construction

  • Edition Notes

    Issued also in French under title: Étude pilote de contrôle de l"humidité dans les murs en ballots de paille recouverts de stucco.

    Other titlesÉtude pilote de contrôle de l"humidité dans les murs en ballots de paille recouverts de stucco
    Statementto Canada Mortgage and Housing Corporation, Don Fugler ; from Fibrehouse Limited, Bob Platts.
    ContributionsFugler, Don, Canada Mortgage and Housing Corporation.
    Classifications
    LC ClassificationsTH2235 .P53 1997
    The Physical Object
    Pagination17 p. :
    Number of Pages17
    ID Numbers
    Open LibraryOL18879165M

      ―A pilot study examining and comparing the load-bearing capacity and behavior of an earth rendered straw ball wall to cement rendered straw bale wall.‖ International Straw Bale Building. Straw Bale Moisture Sensor Study Introduction Houses with straw bale walls are relatively rare in Canada, but many people have expressed interest in building this type of house, particularly in rural areas. The main advantages are the ease of construction, the high degree of wall insulation, and the environmental benefits of.

    The aim of this study is to compare brick and straw bale wall systems from environmental, economic and energy perspectives. The choice of basic building materials is an important part of each project and is usually based on compression tests, moisture content and thermal stability of bales as well as pH measurements. Furthermore, Garas et. Likewise, California straw bale code () recommends that, a moisture barrier shall be used between foundation top and the bottom of bale walls to prevent moisture from migrating through the foundation so as to come into contact with the bottom course of bales.

    An average T of dB (A- weighted) for the stuccoed bale wall is greater than the average transmission loss of dBA measured for a 6-in solid concrete wall with 1/2-in of plaster on both sides. The effectiveness of straw bales to absorb sound was measured in .   This is equivalent to a U-factor of W/m2K. On this basis, it is commonly reported that the R-value of plastered straw bale walls is per 25mm wall thickness. A more recent study by Wimmer et al. () measured the U-factor of plastered straw bale walls and reported W/m2K for a wall with mm wide bales.


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Pilot study of moisture control in stuccoed straw bale walls by Bob Platts Download PDF EPUB FB2

4/ THE PILOT STUDY. 5/ PILOT STUDY RESULTS AND FIRST COMMENTS. 6/ DISCUSSION. INTRODUCTION. This report presents the findings of pilot work exploring straw bale house performance in resisting or controlling moisture.

The field work was done in Quebec's Outaouais region, just north of Ottawa. Get this from a library. Pilot study of moisture control in stuccoed straw bale walls: report. [Bob Platts; Canada Mortgage and Housing Corporation.]. Straw-bale construction consists of using compressed blocks (bales) of straw, either as fill for a wall cavity (non-load-bearing) or as a structural component of a wall (load-bearing.).

A post-and-beam framework that supports the basic structure of the building, with the bales of straw used as infill, is the most common non-load-bearing approach.

were built differently than most current straw bale straw was mortared on all sides, like big builder then applied stucco to the “bricks.” Louis Gagné pioneered this technique, which is the subject of several CMHC reports.

The report about the research, Pilot Study of Moisture Control in Stuccoed Straw Bale Walls. A Pilot Study Examining the Strength, Compressibility and Serviceability of Rendered Straw Bale Walls for Two Storey Load Bearing Construction.

In: Proceedings of the First International Conference on Ecological Building Structure, San Rafael, 14 by: 4. The rate at which straw bale walls dried out was also able to be measured, as was the influence of high RH at the interior on the RH within the straw bales.

The moisture content of the straw was not measured. Straw bale moisture probes. Straw bale moisture probes are used by farmers to measure the moisture content of straw bales.

People often talk to me about testing the moisture content of the bales in their walls once their straw bale house is complete. For some it’s just a passing thought, but one they want to pursue.

For others who are perhaps buying an existing straw bale home from a previous owner, it’s a must as they want to be sure the bale walls are dry.

Straw bale walls need to be kept dry as moisture is detrimental to not only straw, but to many building materials. Moisture entering the bales from the roof above is to be avoided at all cost. If the walls of your straw bale home are kept dry, they will last for the life of the building.

Why are we even talking about this in when it was clearly pointed out in the "Pilot Study of Moisture Control in Stuccoed Straw Bale Walls" report to Canada Mortgage & Housing Corp (CMHC) that such constructions are the equivalent of placing a moisture-susceptible material into a moisture-impermeable bell jar.

Pilot Study of Moisture Control in Stuccoed Straw Bale Walls This report presents the findings of pilot work exploring straw bale house performance in resisting or controlling moisture. The field work was done in Quebec's Outaouais region, just north of Ottawa.

Pilot Study of Moisture Control in Stuccoed Straw Bale Walls, by Bob Platts, Other tests available from CMHC; additional studies appear in Issue TLS# Development Center for Appropriate Technologies – DCAT, PO BoxTucson AZ ; Downloadable codes and testing documents include.

A Pilot Study examining and comparing the load bearing capacity and behaviour of an earth rendered straw bale wall to cement rendered straw bale wall. International Straw Bale Building Conference, Wagga Wagga, Pilot Study of Moisture Control in Stuccoed Straw Bale Walls.

Abstract. This thesis is an investigation into the moisture performance of straw bales used in the construction of buildings. The principle of taking bales of straw off the field and stacking them up on themselves to form the walls of a simple building is a practise that started over a hundred years ago.

Platts, B.: Pilot study of moisture control in stuccoed straw bale walls, Report to Canada Mortgage an d Housing Cooperation. Fiber House limited, Canada, All straw bale houses need a layer of plaster on the outside to keep water out.

While cement stucco is convenient and low-maintenance, it can cause moisture problems once it cracks, and may actually keep the bale wall from drying properly.

Most straw bale builders use clay-based earthen plasters or lime plaster, which require regular reapplication. The most promising thing we’ve seen in terms of strawbale homes were the prefabricated straw bale walls, also known as straw bale SIPS. There was a Canadian supplier we knew of that has gone belly up we have heard, but they are still being built in the UK and apparently have a pretty good track record despite the humid climate.

For example, a square foot of inch-thick straw-bale wall is cubic feet, weighing 15 pounds per square foot, assuming a density of 10 pcf for the baled straw; this wall can store 3 to pounds of water per square foot. Lower density straw would store proportionately less water.

A study of mould is presented along with the current methods available for predicting mould growth. Moisture is the primary controllable factor to mould growth in buildings. Therefore, an understanding of moisture accumulation within straw bale walls is necessary to provide a safe design that precludes mould growth.

This study compiles the. Pilot Study of Moisture Control in Stuccoed Straw Bale Walls Monitoring the Hygrothermal Performance of Strawbale Walls "A California winery, interested in quality buildings and sustainable action, commissioned the construction of a large strawbale building to be used as a tasting room, barrel storage room, and tank farm on a site adjoining one.

Straw decay is not an issue if the proper precautions are taken to prevent moisture infiltration (Heath and Walker, ). In order to ensure the durability of straw bale walls, Lawrence et al. typical straw bale wall exposed to a Belgium climate. Transient numerical Heat, Air and Moisture (HAM)-simulation are performed with the state-of-art model DELPHIN 5 [9] to verify the overall hygrothermal performance of a straw bale wall and quantify the impact of natural air convection in such building elements.Moisture is the primary controllable factor to mould growth in buildings.

Therefore, an understanding of moisture accumulation within straw bale walls is necessary to provide a safe design that precludes mould growth.

This study compiles the current state of knowledge of the hygrothermal properties of the materials used in straw bale walls.You can build a quality “garden wall” with straw bales, but the wall must be built to protect the bales from exposure.

Plaster, a wall top device (roof or other protection, must be included in the design as well as a lift off of the ground to prevent moisture from wicking up into the straw.