▽ +09.00Technical detail · PS-D-03
External corner
An external wall corner in plan: chamfered arris, reinforcing strip, membrane wrapped with no laps at the corner, protection board.
+01.00PS-D-03
Plan and numbered callouts
Callouts
- 1Concrete wall (cut in plan)جدار خرساني (مقطع أفقي)
- 2Chamfered or rounded arrisحافة مشطوفة أو مدوّرة
- 3Primerبرايمر
- 4Reinforcing strip centred on the cornerشريط تقوية متمركز على الزاوية
- 5Membrane wrapped around the cornerغشاء العزل ملتفًا حول الزاوية
- 6Field lap kept away from the cornerوصلة الغشاء بعيدًا عن الزاوية
- 7Protection boardلوح حماية
- 8Backfill compacted in layersردم مدكوك على طبقات
- 9Inside (basement)الفراغ الداخلي (القبو)
+02.00About this detail
What this detail solves
At an external corner the membrane is pulled around a projecting edge; on a sharp arris it tears or lifts. The arris is chamfered or rounded and primed, a reinforcing strip is centred on the corner, and the field membrane is wrapped around with its laps kept away from the corner. The plan shows a basement wall corner with a sheet membrane on the outside and a protection board before backfilling.
Critical points
- Chamfer or round the arris to suit the membrane system — never on a sharp edge.
- Centre the reinforcing strip on the corner, extending L onto each face.
- Keep the field laps off the corner — offset by at least L.
- In liquid-applied systems, a reinforcing fabric is embedded in the first coat instead.
- Fix the protection board before backfilling; compact the backfill in layers without dragging it over the membrane.
Notation in this drawing
- PLANhorizontal section (plan)
- NTSnot to scale
+03.00Downloads
Detail files
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Detail sheet — PDF (A3 landscape, Arabic & English)
Typical detailAR · ENR02026-10-08367 KB
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+04.00Related
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