It should be borne in mind that when dry the aggregate weighs approximately 30 cwt per cu. yd and the cement approximately 23 cwt per cu. yd. I it will therefore be seen that stout timber, well shored and supported, will be required.
Mayihlale ezingqondweni into yokuba xa yomile intlabathi inobunzima obunga- mashumi amathatha abuncinane becwt ngecu enye kwaye isamente inamashunu mabini anesithatha secwt ngecu yeyadi nganye.Iyakubonakala ngapha koko ukuba umthi owomeleleyo, ezibekwe kakuhle saxhaswa, uya kufuneka.