Observation

 

Most candidates were able to:
-           sketch straight edge and boat level;
-           Name one safety wear that should be worn on site when carrying a sandcrete block.

            However, some of them were unable to:

•  state one use of straight edge and boat level;
• state three reasons for ensuring safety on a construction site.

The expected response to question 2 is as given below

 

(b)        Uses of each of the tools:

• Straight-edge is used for:

 

                        -           checking the flatness of a newly laid wall;
-           ensuring that all blocks/bricks are laid to the same level in each course;
-           tamping concrete in solid ground floor or reinforced concrete upper floor construction;
-           transferring levels in conjunction with the spirit level during setting-out operation;
-           adjusting/aligning brick/blockwall vertically and horizontally;
-           checking plumb of a wall in conjunction with a spirit level.

• Boat level is used for:

• adjusting small works in a confined space;
• adjusting individual brick or block in a wall;
• checking the flatness of tiles in a tiling work;
• establishing horizontal surface;
• establishing verticality of walls in conjunction with a straight-edge.

                                                       
(c)        Reasons for ensuring safety on a construction site are to:

• avoid injury to operatives;
• safeguard lives of workers;
• avoid waste of man-hour;
• avoid waste of materials;
• avoid additional cost of construction;
• avoid delay of construction;
• boost the moral of workers
• prevent accident on site.

(d)       Safety wears to be worn when carrying a concrete block include:

• hand gloves; rubber gloves; leather gloves etc;
• hard boots;
• overall;
• helmet;
• visor.