The administration of Mayor Luke Ravenstahl is working on a temporary ordinance that would place restrictions on materials protesters use to link themselves together in tough-to-break formations, the Pittsburgh Post-Gazette reported Friday.
PVC pipe, handcuffs, wire and cement are among the materials the city may restrict, the Post-Gazette says.
Public Safety Director Michael Huss says the proposed legislation will be made public once it is completed.
Pittsburgh's hosting of the G20 summit is expected to draw a large number of protesters. Previous summits have sparked massive demonstrations.
"I feel like we're just sitting ducks," says Councilwoman Tonya Payne, whose district includes the downtown area where the leaders will meet.