Systole is the last stage of a heart beat. It happens right after diastole, when the heart refills with blood. During systole, the heart's two ventricles contract (squeeze). (The ventricles are the largest parts of the heart, which pump blood to the body and lungs.) During systole, the heart muscle gets an automatic electrical signal that tells the heart to contract (squeeze). This makes the blood flow out of the heart.
Basics. General contractors earned a mean $45.14 per hour, or $93,900 per year, as of May 2011, according to the Bureau of Labor Statistics. The lowest-paid 10 percent of contractors received less than $24.35 per hour, or $50,650 per year, while the best-paid 10 percent made $71.67 per hour, or $149,070 per year.
The typical remodeling contractor will have overhead expenses ranging from 25% to 54% of their revenue â that means every $15,000 job could have overhead expenses of $3,750 to $8,100.Somewhere along the line, people started believing that a 10% overhead and 10% profit is the industry standard for construction jobs.our contractor gets $5,000 to pay their overhead expenses (which includes salary) and make a reasonable profit. I just heard those same people say, But wait, contractors don't have any overhead!. Guess again.