The code is designed to reduce property losses from a hurricane by at least 50 percent while only slightly adding to construction costs. Maximum sustained winds are between 74 and 95 miles per hour. Minimal damage is done to building structures.
Damage is primarily to unanchored mobile homes, shrubbery and trees.
Some coastal road flooding and minor pier damage are expected. Maximum sustained winds are between 96 and 110 miles per hour. Some roofing material, door and window damage is done to buildings. Considerable damage to vegetation, mobile homes and piers is expected. Small craft in unprotected anchorages will break their moorings.