procurement of electrical materials for maintenance of street lighting in gundlapochampally municipality under municipal general funds-. cement 1. ordinary and low heat portland cement. ii. aggregates 1. aggregates, coarse & fine from natural resources for concrete. 2. sand for masonry mortar 3. methods of tests for aggregates for concrete part-i particle size and shape part-ii estimation of deleterious materials & organic impurities part-iii soundness 4. specification for test sieves. part-i: wire cloth test sieves. bricks 1. common bunt clay building bricks iv. steel 1. mild steel and medium tensile steel bars and hard drawn steel wire, concrete reinforcement part-i mild steel & medium tensile steel bars. etc 2. pozzolanna portland cement