205
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: − +
no edit summary
For advice on decorative surface aggregates see [[Stone]]
For advice on decorative surface aggregates see '''[[Stone]]'''
*Granular material for underdrains should be clear crushed 20 or 50 mm diameter stone graded in accordance with [https://www.astm.org/Standards/D2940.htm ASTM D 2940],
*Granular material for underdrains should be clear crushed 20 or 50 mm diameter stone graded in accordance with [https://www.astm.org/Standards/D2940.htm ASTM D 2940],