Balcony railings vary depending on style of architecture and materials used. Local laws dictate the amount of space required between each railing. Most commonly, a space of no more than four inches must separate each rail from another. This is required so that no human, including a small child, can crawl through balcony railings. Further, balcony railing must be strong enough to meet the
. resistance of at least 200 pounds of pressure, the weight of a large person leaning against the railing. For an article on selecting the right balcony railing for an individual, click here: http://www.home-decorating-reviews.com/railing.html