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This manuscript describes the natural radioactivity and its health hazard effects due to building materials. An overview of other natural radioactivity sources like uranium, radium, thorium and potassium and, also the types of radiations has been discussed. A brief description of radiation units, exposure limits and guidelines given by International Commission on Radiological Protection is also given. It represents a brief description of radium, thorium and potassium measurement techniques, materials and instruments used in the present study. The building material have been analyzed for...

We live in radioactive world. The exposure of living beings to the natural and manmade ionizing radiation have adversely affected the health of mankind causing short and long term biological consequences and hence is the major cause of concern for the past about hundred years . Various international agencies like UNSCEAR, ICRP, WHO, IAEA, ICAR, OECD, NEA, US EPA, etc. are regularly monitoring the radiation levels, exposure of the public, its health effects and thereby are giving recommendation for the control and protection from radiations. For the detailed investigations for natural...