Types of Floor Lecture Notes. The access and penetration of moisture content into building through its walls, floor, roof etc. It is continuous layer of impervious material applied to prevent moisture transmission. A common example is polyethylene sheeting laid under a concrete slab to prevent the concrete from gaining moisture through capillary action. Rising damp is caused by capillary action drawing moisture up through the porous elements of a building's fabric.
BSD-108: Investigating and Diagnosing Moisture Problems
METHODS TO PREVENT DAMPNESS IN BUILDING | CIVIL SITE VISIT
Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Halim , Anas Zafirol Abdullah Halim Published Engineering Journal of Sustainable Development Analysis of dampness covers a variety of methods for measuring moisture content in both high level and trace amounts in solids such as building element. Analysis of dampness in heritage building is very important to avoid serious damage in heritage property.
Post a Comment. Dampness in a simple term is when excess water molecule is on building which results to visible growth of mould and destruction or disturbance of wall surfaces and materials. At this stage, you begin to observe the presence of moisture on the body of a building, usually inside, a little below the window level. You can easily see this when you raise the carpet and notice presence of water under it Possible Causes Of Dampness In A Building 1 Rain— If the roof is not well constructed to take out water rain, it may lead to dampness on walls due to leakages down from roof to wall.
Absorption of moisture by the building materials is one of the chief causes of dampness. On account of granular nature of materials, moisture finds an easy access through the voids and this aided by capillary action assists the moisture to travel in different directions. Thus, either on account of faulty design of structure or bad workmanship or by use of defective structures or by use of defective materials, moisture may find its way on the interior of the building either through the wall, floor or roof.