The Installation Process for 5 5:9
Case Study Solihull College, Solihull Objective To provide a safe, anti-slip, level means of access on Solihull College building in Solihull. The roof type was an existing Tacdeck 508 secret fix with rooftop mounted plant. The request was in response to a need to comply with WAHR 2005 (Work at Height Regulations 2005) which requires a safe means of access to a place of work and at the same time protect the roof sheet from regular foot traffic. Solution Latchways approved installer worked with the client to develop a specification. It was recommended that the client should install a Latchways WalkSafe system in a longways and shortways format that was secured using secret fix clamps thereby not affecting the warranties/guarantees of the roofsheet or day to day college facilities. The system was installed in line with Tacdeck s recommended guidelines. Project Data Site: Solihull College, Solihull Roof type: Tacdeck 508 Walkway specification: Flat style longways, white Flat style shortways, white Project date: July 2006 Total metreage of walkway: 232 m World leaders in fall protection 5:10 Copyright Latchways plc 2007 www.latchways.com
5 The Installation Process for Shortways Panels laid to falls NB: Typical example of shortways panels with some planks removed for clarity and items shown are not to scale. 3 1600 mm 1 1 Fixing the Connecting Bars Lay the walkway sections on the roof in the approximate configuration of the intended route. 2 Fix the Aluminium Joining Bars 50 x 6 x 200 mm into the end of the 3 x T bearers of the walkways. These are only screwed in one end of the panel to create the male part of the connection, the female section is not screwed to allow for thermal movement. 2 Secret Fix Seam Clamp Placement The Secret Fix Seam Clamps will need to be positioned approx 1600 mm apart (depends on the roof section), placed over the seam and slid into position (abutting the walkway) and tighten. 3 Fixing the Secret Fix Seam Clamp to the Walkway Where the angle bracket of the Secret Fix Seam Clamp abuts the walkway pre-drill the Walkway T Bearers to receive the Peel Rivet. Then using a Peel Rivet affix the Secret Fix Seam Clamp to the T Bearer of the walkway. 5:11
The Installation Process for Corner Panel detail laid to falls NB: Typical example of corner panels with some planks removed for clarity and items shown are not to scale. 2 1 1 Shortways to Longways Corner Corner packs consist of 2 x Aluminium Joining Bars and 1 x T bearer. As the T bearers on the longways and shortways section do not line up, an extra T bearer is supplied. Insert the Aluminium Joining Bars into the end T bearers of the shortways panel and secure using Self-Tapping Screws supplied. 2 Shortways to Longways Corner (continued) Slide the extra piece of T bearer over the protruding Aluminium Joining Bar and position this under the longways unit, ensuring that the bearer spans at least two seams. Now offer the longways walkway up to the shortways panel and interlock the outside section. 3 Aligning Longways Panel to a Shortways Panel When aligning a longways panel with a shortways panel the two are not connected merely butted up together with a 5 mm gap to allow for thermal expansion. World leaders in fall protection 5:12 Copyright Latchways plc 2007 www.latchways.com 3
5 Longways Panels laid to falls NB: Typical example of longways panels and items shown are not to scale. 1 5 mm gap for thermal expansion 2 Approx 2000 mm Walkway Layout Firstly identify where the walkway is to be fitted and loose lay the standard panels onto roof sheet. 1 Positioning the Secret Fix Seam Clamps Space out the Secret Fix Seam Clamps around 2000 mm apart onto adjacent secret fix seams and lightly clamp over the seam. Move the Secret Fix Seam Clamp up adjacent the extended bearer on the walkway. Once in position, tighten the Secret Fix Seam Clamp onto the seam. There is no joining mechanism for longways, just lay the next one in line with a 5 mm gap to allow for thermal expansion. 2 Fixing the Walkway Where the angle bracket of the Secret Fix Seam Clamp abuts the walkway pre-drill the Walkway T Bearers to receive the Peel Rivet. Then using a Peel Rivet affix the Secret Fix Seam Clamp to the T Bearer of the walkway. 5:13
The Installation Process for Stepped Shortways Panels on pitched roof NB: The walkway is supplied as individual sections, not component parts and items shown are not to scale. Approx 1500 mm 1 Approx 400 mm Fixing the Connecting Bars Lay the stepped shortways sections on the pitched roof in the approximate configuration of the intended route. 1 Fixing the Stepped Walkway Secure a A Hi-Bond Self-Adhesive Pad to the reverse side of the Secret Fix Bracket where the fixing will be located. Using a Peel Rivet, secure the stepped walkway to the roof sheet with a Secret Fix Step Fixing Bracket. Fix 4 x Peel Rivets per Secret Fix Step Fixing Bracket with 2 x Peel Rivets fixing through the stepping footer bearers and 2 x Peel Rivets through the roof sheet as illustrated. The Peel Rivets are fixed using a peel rivet tool. World leaders in fall protection 5:14 Copyright Latchways plc 2007 www.latchways.com A
5 Stepped Shortways Panels on pitched roof (continued) NB: The walkway is supplied as individual sections, not component parts and items shown are not to scale. 2 3 2 Connecting the step units Remove the lowest pair of loosely fixed bolts from the Step Footing Bearers of the 2nd step unit. Next slide down the 2nd step unit ensuring the 2 x protruding Aluminium Joining Bars insert into the chambers of the step unit already installed. 3 Fixing the step units together Drill through the Aluminium Joining Bar, re-fix bolts and tighten. 5:15
The Installation Process for Shortways Panels traversing a pitched roof NB: Typical example of shortways panels traversing a pitched roof with some planks removed for clarity and items shown are not to scale. Approx 800 1000 mm 3 2 1 1 The Aluminium Flat Bar In the first section of walkway insert 1 x Aluminium Reinforcing Bar 50 x 6 x 3000 mm into the front and middle bearers ensuring 100 mm remains protruding from the end to form a male function with the next panel. To the rear bearer insert the Aluminium Joining Bar 50 x 6 x 200 mm to form this male joiner. 2 Fixing the Secret Fix Level Front and Back Fixing Brackets B Start at one end of the walkway. Secure a Hi-Bond Self-Adhesive Pad (HSAP) to the reverse side of the A Secret Fix Level Front Fixing Bracket, then fix in position with 2 x Peel Rivets ensuring it sits over the secret fix seam (approx 800 1000 mm apart). A A 3 Fixing Top Hat Section and Levelling Bracket Fix both sides of the Top Hat Section to Bracket (THS) A with Self-Tapping Screws supplied (approx 600 mm apart) (ensuring to miss the crown of the roof sheet). Fix the Levelling Bracket to the THS with 4 x Self-Tapping Screws diagonally (3 x Levelling brackets per THS approx 800 1000 mm apart). World leaders in fall protection 5:16 B Copyright Latchways plc 2007 www.latchways.com
5 Shortways Panels traversing a pitched roof (continued) NB: Typical example of shortways panels traversing a pitched roof with some planks removed for clarity and items shown are not to scale. 4 Approx 800 1000 mm 5 6 4 Fixing the G-Section Secure a HSAP to the reverse side of the Secret Fix Level Back Fixing Brackets B. Loosely place the G-Section (GS) on the roof sheet approx 500 mm up the slope of the THS. Position the Support Rail (SR) so the rear end sits over and against the GS. Use a spirt level on top of the SR to ensure it is level. Slide down both GS and SR until it butts up to the Levelling Bracket. Mark on the roof sheet the position of the GS. Position the B Bracket under the GS and affix to the side of the roof sheet using 2 x Peel Rivets. Affix the GS to the B Bracket using 2 x Self-Tapping Screws supplied (ensuring to miss the crown of the roof sheet). 5 Fixing the Support Rail Fixing B A Fixing Fix the Support Rail to G-Section with 2 x Self-Tapping Screws diagionally. 8 Fixing the Support Rail to the Levelling Bracket Once level fix the Support Rail to the Levelling bracket using a single Self-Tapping Screw supplied. Fixing 5:17
The Installation Process for Shortways Panels traversing a pitched roof (continued) NB: Typical example of shortways panels traversing a pitched roof with some planks removed for clarity and items shown are not to scale. 9 Approx 800 1000 mm 7 8 7 Keeping the Walkway Level Mark here To ensure the next Support Rail is level, take a marker to indicate the required distance between the Support Rail and the top of the Levelling Brackets. 8 Fixing the Walkway to the Support Rail Lay the walkway onto the Support Rail hooking the rear T bearer over the G-Section. Secure the walkway to the Levelling Bracket using 3 x Self-Tapping Screws supplied. Make sure the walkway and Support Rail are aligned in such away that you can clearly see the Support Rail through the walkway as a Retaining Bracket will fix the upper end of the walkway to the Support Rail. 9 Fixing the Retaining Bracket Finally use Self-Tapping Screws supplied and Retaining Bracket to fix the walkway to the Support Rail, hooking the Retaining Bracket over the top load bearer. World leaders in fall protection 5:18 Copyright Latchways plc 2007 www.latchways.com Fixing Fixing