Cost Analysis of Precast and Cast-in-Place Concrete Construction for Selected Public Buildings in Ghana

Table 5

Professionals opinions on using precast concrete product.

Number	Advantages	Rating					Total		Mean	RII	Rank
		1	2	3	4	5
1	Low life cycle cost	0	0	2	42	34	78	344	4.4103	0.882	1
2	Reduction of on-site waste	0	0	2	50	26	78	336	4.3077	0.862	2
3	Speed of construction	0	2	6	46	24	78	326	4.1795	0.836	3
4	Quality	2	0	10	54	12	78	308	3.9487	0.79	4
5	Durability	0	2	16	48	12	78	304	3.8974	0.779	5
6	Dimensional accuracy	0	16	14	28	20	78	286	3.6667	0.733	6
7	Reduction of on-site labour	0	14	12	48	4	78	276	3.5385	0.708	7
8	Reduction of on-site activity, noise, and disturbance	0	14	20	34	10	78	274	3.5128	0.703	8
9	Sandwich panels available for insulation	6	16	12	26	18	78	268	3.4359	0.687	9
10	Minimal maintenance	6	16	4	46	6	78	264	3.3846	0.677	10
11	Thermal inertia reduces lifetime energy costs	0	14	22	42	0	78	262	3.359	0.672	11
12	Large spans available from prestressing	6	26	4	34	8	78	246	3.1538	0.631	12
13	Tight tolerances	4	34	6	28	6	78	232	2.9744	0.595	13
14	Acoustic insulation	12	36	10	14	6	78	200	2.5641	0.513	14

Source: Field Survey, 2014.