1. BUILDING ECONOMICS

2. FACTORS AFFECTING COST DURING CONSTRUCTION STAGE

3. INFLUENCE ON COST OF SITE CONDITION
NUMEROUS FACTORS TO BE CONSIDERED. TYPICAL CONSTRUCTION SITE MAY INVOLVE ANAY COMBINATION OF THESE FACTORS PLUS ADDITIONAL ITEM PECULIAR TO INDIVIDUAL SITUATIONS.

4. INFLUENCE ON COST OF SITE CONDITION
LOCATION OF SITE
ACCESS AND TRAFFIC CONTROL
SIZE OF SITE
GROUND CONDITION
ORGANISATION

5. INFLUENCE ON COST OF CONTRACT CONDITIONS
VARIOUS TYPES OF CONTRACTS ARE USED IN CONSTRUCTION INDUSTRY.
THESE MAY INCORPORATE SPECIAL CONDITIONS WHICH COULD HAVE A BEARING ON COST OF WORKS.

6. INFLUENCE ON COST OF CONTRACT CONDITIONS
TIME AVAILABLE FOR COMPLETION
TYPE OF CONTRACT
NATURE AND MAGNITUDE OF WORK
DEPENDING ON DEGREE OF ACCURACY OF PREPARERATION OF CONTRACT

7. INFLUENCE ON COST OF CONSTRUCTION TECHNIQUES
CHOICE OF CONSTRUCTION TECHNIQUES CANNOT BE CONSIDERED SEPARATELY, IT IS CLOSELY RELATED TO DESIGN AND CHOICE OF STRUCTURAL FORM FOR THE BUILDING. BASICALLY NOWADAYS DUE TO HIGH COST OF LABOUR, MAIN AIM IS TO UTILISE MECHANICAL EQUIPMENT WHEREVER POSIBLE ON SITE, IN THIS BEING THE CASE, DESIGN AND PROGRAMME FOR WORK MUST BE DEVELOPED AROUND THIS CONSIDERATIONS

8. INFLUENCE ON COST OF CONSTRUCTION TECHNIQUES
TYPE AND SIZE OF MACHANICAL EQUIPMENT REQUIRED VARIES WITH CONSTRUCTIONAL FORM, EXAMPLE:
i) TRADITIONAL LOAD BEARING BRICKWORK, MAINLY A MECHANICAL MIXER FOR MORTAR AND POSSIBLY A PLATFORM OF HOIST FOR BRICKS ETC.
ii) FRAMED STRUCTURE, HEAVIER CAPACITY LIFTING STEEL SECTIONS, WET CONCRETE, REINFORCING STEEL, PANELS OF FORMWORK ETC.

9. INFLUENCE ON COST OF CONSTRUCTION TECHNIQUES
IMPORTANT CONSIDERATIONS INVOLVE:
METHOD OF EXCAVATION AND MEANS OF TRANSPORTATING EXCAVATED SPOIL.
LOCATION OF CONCRETE OR MORTAR MIXING SET-UPS IN RELATION TO DELIVERIES, ACCESS AND MEANS OF TRANSPORTING MATERIAL AROUND SITE.
LUFTING EQUIPMENT, CHOICE BETWEEN STATIC AND MOBILE TYPES.THIS FACTORS MUST BE RELATED TO MIXING PLANT, UNLOADING POINTS, STORAGE AREAS ETC. WHERE MECHANICAL EQUIPMENT IS UTILISED ON SITE, AIM IS FOR CONTINUOUS USE TO OPTIMISE CAPACITY.

10. UNPREDICTABLE ITEMS
OVER WHICH THE CONTRACTOR HAS NO CONTROL. THESE INCLUDES:
CURRENT ECONOMIC SITUATION
LABOUR PROBLEMS
ON EXTREME SITES OR DURING WINTER MONTHS, INCLEMENT WEATHER.
PRESENCE ON SOME SITES OF HIDDEN OBSTRUCTIONS
CONFINED CITY SITES