1.0The Construction Specifierhttps://www.constructionspecifier.comrich600338<blockquote class="wp-embedded-content" data-secret="ceGGF9t2ov"><a href="https://www.constructionspecifier.com/the-evolution-of-plaza-waterproofing/">The evolution of plaza waterproofing</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.constructionspecifier.com/the-evolution-of-plaza-waterproofing/embed/#?secret=ceGGF9t2ov" width="600" height="338" title="“The evolution of plaza waterproofing” — The Construction Specifier" data-secret="ceGGF9t2ov" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.constructionspecifier.com/wp-includes/js/wp-embed.min.js </script> https://www.constructionspecifier.com/wp-content/uploads/2017/02/featured1-4.jpg600300Non-stop increases in urban land costs have led to more efficient use of space by building owners. This includes not only building upward, but also downward. Waterproofed plazas over occupied underground facilities and roof terraces became popular ways of maximizing both horizontal and vertical space.