📕 Source : WEDC © - Poster.057-A typical arrangement for an apron slab and drainage. // 2013 // 1 page.
https://wedc-knowledge.lboro.ac.uk/details.html?id=19654
https://app.box.com/s/gaz2ajzsm2iq5qyl52np4umt9ug0yqou
https://app.box.com/s/gaz2ajzsm2iq5qyl52np4umt9ug0yqou
Source : WEDC© // Release year — 2013.