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UNIT VI---UNUSUAL PROBLEMS   Water Proofing The Roof Terrace:  Recommendation   The old cover concrete and system should be examined for its soundness.   The slopes shall be checked for its effective drainage of rain water.   The surface cracks shall be fixed with polymer modified cementitious crack filling compound.   Injection pressure grouting is carried to fill the voids in the concrete by drilling holes at regular intervals c/c 1mtr by admixing Grout additive and integral water proofing admixture.  Line of Action   Dismantle the old system   Surface preparation   Fill up all the cracks   Injection pressure grouting   Fixing down take pipes   Fixing joint tape   Membrane coating   Final layer of cement mortar screed   Coving  Specification for terrace waterproofing  For new constructions:  To obtain a sound waterproofing layer please follow the...

UNIT V---METHODICAL APPROACH TO REPAIRS   CRACKS OVER OPENINGS :  The cracks over the windows had developed over many years due to rusting lintels.   Lintels are made of steel and support the brick over a window openings.     Rusting lintels are the number one reason cracks occur above window frames.    This generally is not a structural issue, but can develop into a structural issue if left unrepaired.  REPAIR :    The only true way to tell if a crack is active is to install a crack monitor.    The proper way to install a crack monitor is to epoxy the monitor to both sides of the crack and leave on the wall or foundation for as long as possible.    SINKING BALCONIES :   There are many things that can increase the risk of injury on a property.    Loose railings on decks and walkways are one of the areas that we need to be aware of.   Wood railing, iron railings, stucco, or even...