Table 3.

Possible defects in building.

s/n	Building component/element defects	Mean	Ranking
A	Roof (wooden member)
1	Poor strength and stability of the timber framing resulting in sagging and spreading of roofs	2.90	45
2	Decay (particularly trusses and facia)	3.20	4
B	Roof covering (asbestos)
1	Broken roofing sheets	3.50	2
C	Roof covering (Aluminium sheet or corrugated zinc)
1	Roof leakage	3.20	4
2	Corroded or worn out	3.10	22
3	Leaking rain water gutter	3.10	22
4	Faulty roof drainage	3.10	22
D	Sanitary fittings and appliance (Plumbing)
1	Septic tank full	3.20	4
2	Inefficient flushing of WC	3.00	34
3	Blocked trap of sanitary appliance	3.00	34
4	Leaking pipes	3.00	34
5	Faulty water taps	3.00	34
6	Worn out drainage board	3.00	34
7	Loose bracket holding pipes to walls	3.10	22
E	Electrical
1	Broken switches and sockets	3.00	34
2	Worn out electrical insulated copper wires	3.10	22
3	Loose wall brackets	3.00	34
4	Cutting off electrical supply	3.20	4
5	Damage to luminaires by vandals	3.20	4
6	Loose arrangement of wires	3.20	4
F	Staircases
1	Nosing, cracked or missing	3.10	22
2	Worn out nosing, treads, balusters, handrails, loose newels post	3.10	22
3	Handrail loose and baluster loose in their bases	3.10	22
4	Blocked rain water, gutter and drainage	3.20	4
G	Walls (Sandcrete blocks)
1	Settlement cracks	3.20	4
2	Bulging and buckling (external walls only)	3.30	3
3	Dampness of walls	3.00	34
4	General weathering/erosion of wall surface	3.10	22
5	Atmospheric impurities	3.20	4
H	Floors/Finishes
1	Spalling (with reinforcement exposed)	3.20	4
2	Movement cracks	3.20	4
3	Worn out screed/finish	3.20	4
4	Dirty terrazzo/granolithic	3.20	4
5	Worn out tiles, ceramic, PVC, clay quarry tiles, marbles, wood blocks	3.20	4
J	Windows/door joinery
1	Decayed frames	3.20	4
2	Sticking of frames	3.20	4
3	Broken glazing	3.00	34
4	Screening noise in doors handles	3.60	1
5	Loose hinges	3.20	4
6	Loose louver blade	3.20	4
K	Wall finishes (Paint)
1	Peeling	3.00	34
2	Chipping or flaking	3.10	22
3	chalking	3.10	22