To complete this stage, I started out with creating custom spindles constructed out of at least 2x4 stock. I used the 2x4 spindles at the beginning and end of reach guardrail sections. This allowed for easier installation and greatly increases lateral stability. Each section of handrail, as defined by the different sections of decking or a change in elevation, needed to parallel the walking surface at three inches above the walking surface. To do this, I started out by installing my 2x4 spindles at the very center of the intersection of the different guardrail sections. Corners were also constructed out of 2x4 stock. At that point, all 2x4 spindles were in place and the 2x6 handrail was ready to be installed. Deck screws secured the 2x6 firmly to the 2x4 spindles. At that point, we had 2x4 spindles and a 2x6 handrail in place. It was then a matter of filling in with the conventional spindles.
The code required that a four-inch round sphere should not be able to pass through any part of the spindle system, so I cut two spacers at 3¾”. The spindles were used with the horizontal spacing at the top and the bottom and one can start at any one of the 2x4 spindles and work toward any direction. The vertical elevation was dictated by the bottom of the outside finger grips for all spindles. To nail these on, I used No. 8 penny or 2½-inch, exterior-grade nail. I personally like to use two three-inch, ring-shank, exterior-grade nails at the bottom of the spindle and I like to use two ring-shank, 2½-inch, exterior-grade nails at the top.