Starter Bars

It is preferred that you mark out your window, door openings and intersecting walls on your slab formwork edge board

Windows and doors should be marked out as per your window and door schedule (NOT AS MARKED ON YOUR DRAWINGS) The reason is that Architectural drawings are usually nominal and not exact! It is advisable to get a copy of your window and door schedule from your window and door manufacturer. Check the sizes are or are not inclusive of timber revels, as reveals usually add 2 x 20mm =40mm to the opening size

Starter bars are typically located in 

• All corners
• All intersections
• 100mm either side of door and window openings
• At the appropriate maximum centres to suit the windload of the area
• Protrude minimum 300mm out of the footing or slab
• Tie them into the slab or footing or lower them into the wet concrete precisely
• Centre of the wall eg 200 Series ZEGO forms are 190mm wide so the bar will be 95mm to the centre from the edge of the slab
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 Starter bars for retaining wall

• Centre to centre as nominated on the Engineering drawings
• Protrude minimum of 600mm out of the footing or slab
• Retaining wall starter bars must be cast in

Missing starter bars, wrongly located Starter Bars or for those who prefer to drill them

• Drill a hole 4mm wider than the bar size eg N12 starter bar drill a 16mm hole
• Depth of hole 125mm minimum
• Blow and brush the hole out
• If there is more than one bar to be drilled, then drill them all first
• Mix up a half cup of ZEGO two part epoxy
• Pour an appropriate amount into the hole and lower the starter bar into the hole so that the epoxy just comes out of the hole, top up hole if required NOTE: Be careful of your skin and eyes when using epoxy
• NOTE: Starter bars for retaining walls must be cast in

Once you have poured the footings or slab

• Before you remove the edge boards, use a roofing square and scratch a line back onto the slab from the window and door setout

Click here for ZEGO Setout and Damp Proof Course Video

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