Reinforced concrete wall openings feature vertical bar jamb reinforcement and horizontal lintels above and below the penetrations. Each face contains four number four bars equally spaced, reinforced with number three ties at eighteen inches on center from two feet below the opening to two feet above the opening, transitioning to thirty-two inches on center elsewhere. A sixty-inch concrete lintel incorporates one number six bar top and bottom. An eighteen-inch concrete lintel incorporates one number seven bar top and bottom. A smaller adjacent opening uses two number four bars on each face equally spaced with matching tie spacing.
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