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FE - Iron Survey

FE = Iron

Rust – iron + water + oxygen    →    hydrated iron(III) oxide = FE3+

When FErrous come into contact with oxygen and water they Rust

·         Iron + Carbon = Steel

·         Steel + Concrete = two materials with the same coefficient of expansion = re-inforced concrete = sky scrapers

Protection from rust – Alkalinity, Paint, plastic, Cathode

The principal signs of deterioration and distress within reinforced concrete structures are:

  • Cracks
  • Spalling
  • Pop outs
  • Discolouration
  • Leaks
  • Damp Patches
  • Lim-scale
  • Re-inforcement corrosion
  • Previous repairs
  • Location and condition of joints
  • Condition of bearings

Period properties often used ferrous metals as ties and as structural elements.

Some mid- war properties of non conventional construction were built structurally of Ferrous structural elements :

Your structural/Building survey should advise you where these elements may be, their expected condition and how to ensure their protection. 

Party Wall Surveyor serving Thanet and London

Third Surveyor serving England and Wales

Bruce Spenser MSc LCGI
Bruce Spenser MSc LCGI