Materials that are bound together with bitumen are called bituminous materials. The use of bituminous materials were initially limited to road construction. Now the applications have spread over the area of roof construction, for industrial purposes, carpet tiles, paints and as a special coating for waterproofing. History of Bituminous Materials Before the era of bitumen, tar…
Types of defects in plaster This post describes 7 different categories of defects most frequently noticed in plaster (as mentioned below) 1. Non-structural cracks 2. Structural cracks 3. Debonding 4. Lack of hardness 5. Grinning 6. Expansion 7. Popping The causes and repair methods for each are discussed below. 1. NON-STRUCTURAL CRACKS Crazing Crazing is a network of fine cracks, usually in a hexagonal…
The term rdA may be called as moment of area, similar to moment of a force, and hence r 2 dA may be called as moment of area or the second moment of area. Thus, the moment of inertia of area is nothing but second moment of area. In fact, the term ‘second moment of…
Life is precious, and should not be wasted by road accidents. Use of the road safety features and proper driving may prevent road accidents. The roads have been designed keeping in view the human factors in road safety. Safety posters and slogans can influence humans towards safe driving. Importance Of Road Safety Risks will always exist that…
Amid thousands of homes in Texas that suffer damage from expansive clay soils and arguably improper structural and geotechnical design or Builders taking chances, this is just one case history that made it to the Texas Supreme Court. The following is by Wayne Slater of The Dallas Morning News (2007)….The house was constructed on what…
Development We apply the Law of Conservation of Energy to a control volume. To do so, we must identify the forms of energy in the control volume. Consider the following system The forms of energy in this system are: · Pressure energy: The pressure in a fluid also does work by generating force on a cross section…
This is the right way to dig a hole children’s story is Mike Mulligan and his Steam Shovel. About this there can be no debate. It was my favorite story growing up, and it remains pertinent to my work today. You dads and moms can get a copy here: Mike Mulligan and Mary Anne You’re welcome….
Lacquer is a colored coating that is frequently used to produce a shiny wood appearance. Lacquer types are nitrocellulose, and less often cellulose, which is expensive and produces an appearance that is not very attractive. Lacquer will be durable if suitable measures are implemented. Basics Of Lacquer In a broad sense, lacquer implies a colored and a clear varnish that is…
When the highway planning process takes place within a large urban area and other transport options such as rail and cycling may be under consideration alongside car-based ones, the procedure can become quite complex and the workload involved in data collection can become immense. In such circumstances, before a comprehensive study can be undertaken, one…
Archaeology is defined as the systematic approach for uncovering the human past and its environment. Archaeology involves not only systematic excavations and surveys, but also analysis of the data collected in the field. In a broader term, archaeology is an interdisciplinary research. Modern studies in archaeology engage a series of other sciences such as geology,…