The internal. structure of the cargo tanks, often un-coated, is exposed to potentially. corrosive gases, sea water, crude oil and oil products. The effect of this corrosion over a period of years is to reduce the. material thickness and hence the strength of the structure. Classification.
It will cost $300 to $400 per day to hire a general contractor. Many times, a general contractor will also be a carpenter and do a lot of the work that needs to be done.That is a great help and cost savings to the project.Whether a general contractor will do work on a project depends on their skills and the outlook of the job. If your general contractor does not do any labor he may want 10% to 20% of the cost of the project.If he does the carpentry he will want 45% to 65% of the money paid to contractors on the project.hat is a great help and cost savings to the project. Whether a general contractor will do work on a project depends on their skills and the outlook of the job. If your general contractor does not do any labor he may want 10% to 20% of the cost of the project.
1 On average, plan on spending anywhere from $15 to as much as $45 per hour. 2  Aside from the hourly fee, most contractors will charge a flat rate to visit a residence or business. 3  This flat fee can range anywhere from $30 to $60. 4  You can expect to pay anywhere from $17 to $26 for a journeyman plumber.