Pete that wasn't always the case and a lot of bridges failed because they were not properly engineered or were built with substandard material. Plus today they have to install silt barriers and treat anything painted as hazardous materials because of lead based paint. People don't realize just how much money EPA and OSHA regs cost. Now I don't want to go back to how things were prior to those agencies but somewhere a balance has to be reached.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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