Technical Drawing 3, WASSCE (PC), 2020

Question 4


Figure 2 shows the plan of a bungalow. Study the specifications attached and answer the questions that follow.




SPECIFICATIONS



All dimensions are given in millimetres.

FOUDATION: 675 × 225 concrete strip laid on 25 blinding at a depth of 900 below ground level

FLOOR: Finished floor level, 300 above ground level with 25 floor creed, 150 concrete slab and 150 hardcore filling

WALLS: All walls 225 thick and 3050 from floor to ceiling

LINTEL: 225 × 225 reinforced concrete

DOORS: DD – 2100 × 1350 × 50 double wooden panel door;

D – 2100 × 900 × 50 flush door both in 100 × 50 timber frame


GARRAGE DOOR: D1 – 2100 × 2500 overhead roller shutter metal

WINDOWS: All louvered glass in 100 × 50 timbre frame
WWW – 1800 × 1200;

WW – 1200 × 1200;

WW – 600 × 600


PROOF: 150 reinforced concrete slab;

750 × 150 parapet with 13 rendering on both sides, 600 eaves projection


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

(i) floor plan;

(ii) front elevation.


(b) Draw, to a scale of 1:50, the section K – K.
[Assume suitable dimension where necessary.]

Observation


The attempt on the question was good; however, the respondents of this question did well in (a)(i) but not in(a)(ii) and (b). The solution and explanation to the poorly answered parts of the question is given below

(a) (ii) FRONT ELEVATION




IMPORTANT AREAS OF CONSIDERATION

    Drawing to correct scale

  • Drawing and indication of ground line

  • Drawing the two (2) walls

  • Drawing the five (5) windows

  • Drawing double panel door

  • Drawing garage door

  • Drawing reinforced concrete roof

  • Drawing the eaves

  • Neatness and quality of lines


      (b) DEAILED VIEW OF SECTION K-K




      IMPORTANT AREAS OF CONSIDERATION

        Drawing to correct scale

      • Drawing and indication of ground line

      • Drawing three (3) foundation footings with convention

      • Drawing the earth filling with convention

      • Drawing hard core with convention

      • Drawing the concrete slab with convention

      • Drawing the floor finish

      • Drawing three (3) walls in section with convention

      • Drawing three (3) foundation walls in section with convention

      • Drawing the reinforced concrete roof

      • Drawing the parapet roof with convention

      • Drawing one (1) window in section

      • Drawing one (1) door in section and 1 in elevation

      • Drawing two (2) lintels

      • Showing five (5) important dimensions

      • Neatness and quality of lines