The final steps include installation of a ladder, a safety rail to the upper bunk and a spring counter-balance system. The simplest spring balance system is a double-drum-enclosed trailer ramp spring and cable set. These are available both locally at trailer vendors as well as online. The spring set will install across the interior head of the outer frame. Follow the manufacturer's instructions for installation and tension-setting, and connect the cable to the outer edge of the upper bed frame. The spring-load tension should be set so that the bed has a slight upward movement when released near the closed position. This step is very important as the bed can cause a hazard to young children that attempt to open it.
A ladder can be constructed out of a variety of fun and innovative materials to match the bunk bottoms. In this case, a simple ladder was made from 2x4s to match the “billboard” art sign painted on the bottom of the bunks. The ladder should mount directly to the floating trim to hinge with the bed. Make sure the ladder feet touch the floor when the bed is open to fully support its own weight. The upper bunk also needs safety rails installed on both sides. The interior side should have a rail installed across the entire length. The exterior side should have a rail starting at the ladder edge and both should be at least 5" above the mattress. If in doubt, be sure to contact the local health department, a licensed contractor and online resources such as the CPSC.