NYC building code 2003 Design of masonry wall clarification
NYC building code 2003 Design of masonry wall clarification
(OP)
Hi,
section 6.4.1 Multi story buildings (page 129 volume II,RS-10 NYC Building code 2003) is not clear to me.
Regarding item a) Exterior Solid Walls-..."The thickness of solid exterior masonry bearing walls shall be at least 8 in. for the top floor and 12 in. for a maximum of 55 feet measured downward from the top floor level. Any addtional height should be provided by 16 in lower walls up to a maximum height of 104 ft. Building taller than 104 ft. shall be structurally analyzed and designed. The slenderness ratio shall not exceed 20. "
Question: where in elevation is the 16 inch wide wall required ? At 55 feet ? Please advise someone.
section 6.4.1 Multi story buildings (page 129 volume II,RS-10 NYC Building code 2003) is not clear to me.
Regarding item a) Exterior Solid Walls-..."The thickness of solid exterior masonry bearing walls shall be at least 8 in. for the top floor and 12 in. for a maximum of 55 feet measured downward from the top floor level. Any addtional height should be provided by 16 in lower walls up to a maximum height of 104 ft. Building taller than 104 ft. shall be structurally analyzed and designed. The slenderness ratio shall not exceed 20. "
Question: where in elevation is the 16 inch wide wall required ? At 55 feet ? Please advise someone.






RE: NYC building code 2003 Design of masonry wall clarification
top floor: 8 inch (whatever height top floor is, say 10ft from floor to roof)
walls below top FLOOR: 12 inches, which can be used up to a maximum of 55 feet
Therefore the 16 inch would start at (10 feet+55 feet)=65 feet from the top of the highest floor.
I don't really like the phrase: "Buildings taller than 104 ft. shall be structurally analyzed and designed". To some people it may sound like "so up to 104' just put whatever reinforcing you choose."
RE: NYC building code 2003 Design of masonry wall clarification