Enter the size of the slab you want to build in square feet. The calculator will indicate the number of 60 lb bags you will need to build a 4 inch or 6 inch slab. (all yields are approximate and do not allow for uneven substrate, waste, etc.)
The classic symptoms of pertussis are a paroxysmal cough, inspiratory whoop, and fainting, or vomiting after coughing. The cough from pertussis has been documented to cause subconjunctival hemorrhages, rib fractures, urinary incontinence, hernias, and vertebral artery dissection.
The disease is transferred from person to person by bacteria-contaminated droplets formed during a coughing spell; however, the disease may be prevented by vaccinations. Symptoms of whooping cough vary. Early in the infection, the symptoms resemble those of a cold; mild fever, nasal congestion, sneezing, nasal discharge, and a dry cough. However, in contrast to a cold, the symptoms persist and worsen over about one to two weeks.