Providing and laying reinforced cement concrete (including prestressed concrete), using coarse sand and screened graded and washed aggregate, in required shape and design, including forms, moulds, shuttering, lifting, compacting, curing,rendering and finishing exposed surface, complete but excluding the cost of steel reinforcement, its fabrication and placing in oosition. etc,):- (a)(ii) Reinforced cement concrete in slab of rafts / sVip foundation, base slab of column and retaining walls; etc and other structural members other than those mentioned in 5(a) (i) above not requiring form work (Le. horizental shuttering) complete in all respecte:-3000psi (Ratio 1:1.5:3) (a) (i) Reinforced cement concrete in roof slab, beams, columns lintels, girders and other structural members iaid in situ or precast laid in position, or prestressed members cast in situ, complete in all respects:-