Study of the Causes and Magnitude of Wastage of Materials on Construction Sites in Jordan

Table 3

Results of the survey, percentages of wastage of materials.

Material	Percentages of wastage of materials					Mean
	0–10%	11–20%	21–30%	31–40%	41–50%
Sand	35	44	36	22	13	20.98
Aggregate	40	45	27	21	17	20.70
PVC water pipes	48	38	29	22	13	19.61
Timber for formworks	44	40	35	20	10	19.49
Cement	48	46	28	19	9	18.34
Concrete block	55	44	30	12	9	17.05
Steel reinforcement	56	42	30	16	6	16.91
Concrete	60	40	27	14	9	16.76
Ceramic tiles	60	49	22	15	4	15.57
Facing stones	68	35	30	15	2	15.14