CONSTRUCTION PRACTICE
4.1 DOORS, WINDOWS AND VENTILATORS
STANDARD SIZES OF DOORS AND WINDOWS – LOCATION OF DOORS
AND WINDOWS – DIFFERENT MATERIALS USED – DOORS –
COMPONENT PARTS – TYPES – FRAMED AND PANELLED – GAZED,
FLUSH, LOUVERED, COLLAPSIBLE, ROLLING SHUTTER AND SLIDING
DOORS – WINDOWS – TYPES – CASEMENT, GLAZED, BAY, CORNER –
PIVOTED CIRCULAR AND DORMER WINDOWS – VENTILATORS –
DEFINITION – PURPOSE – TYPES – VENTILATOR COMBINED WITH
WINDOWS / DOORS.
4.2 HOLLOW BLOCK CONSTRUCTIONS
HOLLOW BLOCKS – ADVANTAGES OF HOLLOW BLOCKS – LOAD
BEARING AND NON-LOAD BEARING HOLLOW BLOCKS – OPEN CAVITY
BLOCKS – FACE SHELLS, WEB, GROSS AREA, NOMINAL DIMENSIONS
OF BLOCKS, MINIMUM THICKNESS OF FACE SHELLS AND WEB,
GRADES OF HOLLOW CONCRETE BLOCKS – MATERIALS USED,
ADMIXTURES ADDED – MIXING, MOULDING, PLACING AND
COMPACTING, CURING, DRYING – PHYSICAL REQUIREMENTS – USE
OF LIGHT WEIGHT AGGREGATES – HOLLOW CONCRETE (HOLLOW
BLOCK) MASONRY – CONSTRUCTION OF WALLS – ADVANTAGES OF
HOLLOW CONCRETE MASONRY.