Questions and Answers.2 - 19SP1026Q0002.pdf

This is a Questions and Answers document (No. 1) for RFQ 19SP1026Q0002 that addresses stairwell construction materials.

The document provides detailed findings from trial pit investigations conducted on stairwell walls and ceiling. Wall A and Wall B are both 15-20 centimeters thick concrete walls. Wall C is solid brick. The transformer wall is concrete. At the corner of the stairwell lower level between the transformer wall and Wall A, a mix of mortar and sand was found. The answer notes that the concrete walls appear to have several patches that used mortar and sand mixtures rather than standard concrete. An accompanying technical diagram illustrates the stairwell layout with dimensional measurements and color-coded identification of the different wall materials and ceiling construction.