(a) Where the temperature in the surrounding area is below seventy degrees Fahrenheit, the maximum allowable time from loading to pour shall be less than one and one half hours.
(b) Where the temperature in the surrounding area is above seventy degrees Fahrenheit, the maximum allowable time from loading to pour shall be less than one hour.
(c) When concrete is placed at or below an atmospheric temperature of forty degrees Fahrenheit or when the predicted temperature is below forty degrees Fahrenheit, within the curing period, the water, aggregates or both shall be heated and suitable enclosures and heating devices shall be provided. The concrete shall be placed at a temperature of not less than fifty degrees Fahrenheit and not more than seventy degrees Fahrenheit and the air surrounding the forms and deposited concrete shall be maintained within this temperature range for a period of not less than five days.
(Ord. 1982-34. Passed 11-8-82.)