![]() Remove the four horizontal guard rail braces around this platform and then descend on to the staircase steps and remove the platform from the alloy tower so that it and the braces can be reused and repositioned higher up the tower. Descend the tower to the lowest platform and adopt the 3T position with your feet on the frame rungs below the trapdoor.Lock the interlock clips that will secure the frames together. Fit the four rung guard rail frame to the top of the frames on the upper step and the three rung guard rail frame to the top of the frames on the lower step. Now the operator should climb fully onto this platform and close the trapdoor.The brace should be placed on the flush side of the platform. ![]() Climb partially through the second trapdoor platform and adopt the 3T position then fit four 1.5 horizontal guardrail braces to the verticals of the frames 0.5 and 1.0, above the platform to make a guard rail and then fit a diagonal brace to continue the zig-zag bracing pattern.A second trapdoor platform also needs to be fitted at the level of the top rung of the ladder frame on the upper step. The operative should now climb fully on the platform, closing the trapdoor behind them and fit another six rung frames to either end of the tower.The brace needs to be placed on the flush side of the platform and will run in the opposite direction to the lower diagonal brace that forms a zig-zag platform. Fit four 1.5m horizontal guardrail braces to the verticals of the frames 0.5m and 1.0m above the platform to make a guard rail then fit a diagonal brace between the bottom rung of the frame on the upper step and the upper frame which is located on the lower step. Climb into the middle of the tower through the opening frame from the bottom of the staircase and climb partially through the platform and adopt the 3T (Through The Trapdoor) position with your feet on rungs below the platform. Lock the frames together with the interlock clips. From the bottom of the staircase, fit a six rung upper frame to the top of the ladder frame on the lower step.This platform will be used for the temporarily safe erection of the tower and will be removed later when being used further up the tower. There is a small bubble level on the underside of all stair deck alloy towers to ease levelling. Fit a trapdoor platform with the trapdoor end located at the lower part of the stairs, to the bottom rung of the frame on the upper step and to the top rung of the ladder frame on the lower step.Level the frames by turning the adjustable leg nuts so that the bottom rung of the frame on the upper step is at the same level as the top rung of the frame on the lower steps with the adjustable legs extended if necessary to achieve this. The brace hooks should be located at the centre of the bottom rungs of the ladder frames which prevents clashing using an erection platform. Connect the two bottom rungs of the frames using a diagonal brace. Place the two ladder frames on the staircase in the position required, roughly 1.5 metres apart with the baseplates fully located on the steps of the staircase with the offset plate facing inwards towards the centre of the frame.Insert the adjustable legs and baseplates into the opening base ladder frames.Sufficient equipment also needs to be available to erect the tower at the height required whilst checking components are not damaged or incompatible plus checking the tower breakdown. Operatives need to be competent and familiarise themselves with the manual for assembly. Before the tower is erected you will need to ensure site conditions are safe.Have two people available to erect all towers for safety reasons.By Network Scaffold Services on in Alloy Towers, Blog |Īlloy towers are one of the most important parts of our scaffolding services, but do you know how to erect them?įor this blog, Network Scaffold will share our 12 step guide to erecting stairwell alloy towers.
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