. Proceedings of the annual convention . LOW POINT OF STRUCTURE TYPE C—3 PLY 2 ALL LAPS. TYPE D - 5 PLY LOW POINT OF STRUCTURE *»„»»»» DENOTES FELT^^mm DENOTES FABRIC LAPPING OF MEMBRANE WATERPROOFING F»G. 1 Water p rootipg 827 Change last item to read as follows: Fine mineral aggregate, and mineral filler meeting requirements of Sec. 213 (3 or 4) 19 percent 302-5.—Last item, change to read: Mineral filler, meeting requirements of Sec. 214 (4) 15 percent to 20 percent 302-6.—In third sentence, fifth Une, insert after stirring rods or suitable mechanicalheaters and mixers, Pages 29-13 to 29-16,
. Proceedings of the annual convention . LOW POINT OF STRUCTURE TYPE C—3 PLY 2 ALL LAPS. TYPE D - 5 PLY LOW POINT OF STRUCTURE *»„»»»» DENOTES FELT^^mm DENOTES FABRIC LAPPING OF MEMBRANE WATERPROOFING F»G. 1 Water p rootipg 827 Change last item to read as follows: Fine mineral aggregate, and mineral filler meeting requirements of Sec. 213 (3 or 4) 19 percent 302-5.—Last item, change to read: Mineral filler, meeting requirements of Sec. 214 (4) 15 percent to 20 percent 302-6.—In third sentence, fifth Une, insert after stirring rods or suitable mechanicalheaters and mixers, Pages 29-13 to 29-16, incl. PRINCIPLES GOVERNING THE WATERPROOFING ORDAMPPROOFING OF RAILWAY STRUCTURES Reapprove with the following revisions: Item 3—Insert after Waterproofing , or waterproofing Sees. 3, 4, 5, and 7 A, change should to 29-14 Item 8—In the second line after the word waterproofing place a period and deletethe remainder of the sentence. Item 9—Second Une, change against external pressure to from external sources. SPECIFIC CASES Item 1—Change Abut
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