Technical Drawing 3, WASSCE (PC 2ND), 2022

Question 4

 

 

The sketch in Fig. 2shows the sketch plan of a three-bedroom bungalow.  Study the sketch plan with the given specifications and answer the questions that follow.

 

SPECIFICATIONS

All dimensions are given in millimetres.

FOUDATION:           675225 concrete strip foundation at a depth of 900 from ground level

FLOOR:                      25 cement with sand screed;
150 thick concrete slab;
200 hardcore. 

WALLS:                     All walls are 225hollow sandcrete blocks with 12 rendering on both sides.

LINTEL:                     225  225 reinforced concrete

DOORS:                     All doors are flush wooden in 100 50  timber frame;
D1:    2100 900 ;
D2:    2100 1800 38.

WINDOWS:               All windows sliding glazed sash in aluminium frame;
W1:    900600;
W2:   900 1200


ROOF:                        Double pitch with king post height 2000 and 13 corrugated asbestos sheets;
Rafter 10050 at 1200 centres;
Purlins 10050 at 1000 centres;
King post and strut 100 50;
Wall plate 10075;
Tie beam 100  50;
Ceiling joist5050 at 1200 centres;
Floor to ceiling height 3100

                                    [Assume suitable dimension where unspecified.]

(a)        Draw, to a scale of 1:100, the following views of the building:

(i)         floor plan;
(ii)        front elevation.

(b)        Draw, to a scale of 1:50, the detailed section on plane Y-Y of the building.

 

 

 

 

 

Most of the candidates answered this question and their performance was very good.