The pulse rate is a measurement of the heart rate, or the number of times the heart beats per minute. As the heart pushes blood through the arteries, the arteries expand and contract with the flow of the blood. The normal pulse for healthy adults ranges from 60 to 100 beats per minute.
Health Hazards of Sewer Gas Backing up in the House Sewer gas is a mix of both toxic and nontoxic gases created by the decomposition of household and industrial waste. Gas levels... The Effects of Breathing Methane Gas Methane is a chemical compound composed of one atom of carbon and four atoms of hydrogen (CH4).
A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere. When a column of waste water flows through a pipe, it compresses air ahead of it in the pipe, creating a positive pressure that must be released so it does not push back on the waste stream and downstream trap water seals.hrough traps, all fixtures are connected to waste lines, which in turn take the waste to a soil stack, or soil vent pipe. At the building drain system's lowest point, the drain-waste vent is attached, and rises (usually inside a wall) to and out of the roof.