Grain Systems Bin Accessories PNEG-1177 - Manual (Page 4)

2.66” Corrugation Winding Stair PNEG-1177 Page 4 of 16
2.66" Winding Stair Installation
1) Determine which direction the steps will go around the bin. (Right or Left)
2) Determine where you want the steps to begin or end, depending on what is important. Each step will go up
10.666" and around the tank 9 3/8" (one bolt space on the horizontal seam). The 2.66" system will have 3
steps per ring. The platform will then cover 56.25" around the tank (6 spaces around the tank). The platform
is to be placed under the roof steps and half of the manway.
3) Once you have determined the start and end of the stairs, the roof can be built to match the placement of the
platform.
4) Add the second ring to the tank and stiffeners if you have a stiffened tank. Once you have two rings of 2.66"
sidewall, you can begin mounting the stairs and platform.
5) There is to be one step in the top ring and three in each of the following rings.
6) The platform and the top of the top step will be 11.75" up from the horizontal seam between the first and
second ring.
2.66" WINDING STAIR INSTALLATION