按使用空间分三类:下面都是以mm(毫米)为单位
外墙砖:100X100,150X150,50X100,50X150,200X200,200X300,300X300
内墙砖:100X100,100X200,100X250,150X250,200X300,250X300,250X400,300X450,(大规格内墙砖是最近才用得比较多。)300X600,400X800
地砖:300X300,300X600,330X330,333X333,400X400,400X800,450X450,450X900,500X500,600X600,600X900,800X800,1000X1000,1200X1200。
所以:
1、也就是说基本上是整数,而且是以0和5结尾的整数。这是对的。除了仿古砖有(330X330,333X333)