Measuring from the floor of the platform to the top of the rail between the posts is essential to meet the International Residential Code (IRC) requirements. The minimum value should be 36 inches. It is important to ensure that the sweeping space and all filling openings do not allow four spheres to pass through. Roof rail height codes require a minimum of 36 inches for roofs higher than 30 inches above ground level, although this may vary by location.
It is important to be aware of the space and load requirements, so always check local building codes when planning your terrace design. Roofs that are 24 to 5 to 10 cm (180 cm) need 36 guards and those above 5 to 10 cm (180 cm) require a 42-inch high railing. The roof railing building code states that a deck railing is needed for any platform that is 30 or more above ground level. If your deck is below 30, then you don't need a railing in most North American jurisdictions. In some states and some provinces, mandatory railings start 24 above ground level, not 30.
The minimum handrail height must be 36 inches. To comply with the code, there is no maximum height, so 42 or 48 inches. Most major manufacturers of composite and plastic roofs offer manufactured railing systems that can be used with their roofs or as a standalone system. Many states and provinces require deck railings to be at least 42 inches long if the platform is 6 feet or more above the ground. If the railing of the terrace staircase works as a railing, then you have 4 of margin to place the railing of the terrace staircase in a place that provides the safest way for people to go up and down the stairs. When building a deck railing, there are many factors to consider, but the most important is the height of the platform railing.
You should check the building code in your jurisdiction before building a deck railing or a deck stair railing. While generalizations can be made for many of the measures required for the code relating to deck railings and terrace stair railings, it is essential to note that there are many variations between jurisdictions in terms of the requirements of the code. In Quebec, deck railings must be at least 36 inches high on all roofs that are 2 feet or more above ground level. The Prescriptive Guide to the Construction of Residential Wooden Roofs, based on the latest version of the IRC (International Residential Code), states that the stair railing “will run continuously from a point directly on the lowest riser to a point directly above the highest riser and return to protection at each end (see details below the Guide). The Canadian construction requirements for the deck railing and the height of the deck ladder railing are generally the same as those found in the U.
Generally, the inner edge of the balusters or cables aligns with the outer edge of the platform, or is within the edge of the platform. It is not measured at the top of the roof posts or anywhere else in the railing system, except at the top of the roof railing.