Measurement Section $-$ Figure $1$DQ$\mathrm{.}1.$ Figure $1($D$)$ shows a section of column base foundation of Type X$,$ Y and Type Z$.$In accordance with the Hong Kong SAR Standard Method of Measurement for Civil Engineering Works, $1992$ Edition, and using the following information: Measure the items of earthwork, concrete, formwork and steel bar reinforcement for the column base foundations.$($Total : $25$ Numbers for Type X$.6$ Numbers for Type Y and $10$ Numbers forType Z$.)$ All excavations are in materials other than rock or artificial hard materials. Excavated materials are suitable for filling. Disposal of excavated materials shall be in tips provided by the Employer.Specification:Reinforced concrete mix for base Type X$-$ grade $40/20$DReinforced concrete mix for base Type Y and Z $-$ grade $45/20$DReinforced concrete mix for column Type X and Z$-$ grade $40/20$DReinforced concrete mix for column Type Y$-$ grade $35/20$DBlinding concrete for all column bases$-$grade $20/20$SCement $-$ Ordinary Portland Cement to BS $12$Steel reinforcement $-$Mild steel or High yield bars to BS $4449$Formwork to all concrete bases $-$ F$2$Formwork to Type X and Z concrete column $-$ F$3$Formwork to Type Y concrete column $-$ F$4$Complete the Measurement, Abstract and Billing for the column base foundation.Blinding

SECTION $($Not to Scale$)$

$\backslash$table$[[$Type of Column Base Foundation,Type X $(25$Nos$),$Type Y $(6$ Nos$),$Type Z $(10$ Nos$)],[$Existing Ground Level,$19\mathrm{.}950,20\mathrm{.}000,20\mathrm{.}000],[$Top Level of Column Base,$17\mathrm{.}100,17\mathrm{.}725,16\mathrm{.}550],[$Bottom Level of Column Base,$16\mathrm{.}500,17\mathrm{.}075,16\mathrm{.}000],[$Thickness of Blinding Layer,$50mm,75mm,50mm$