shall have edges bent to an angle of at least 45 degrees, of sufficient width to provide firm and secure anchorage into the wall construction. Open-type reglets shall be fitted into fiberboard or other suitable separators to prevent crushing or filling of the slot during placing of concrete. Reglets shall be secured in the concrete forms with aluminum nails spaced not over 12 inches on centers. Metal flashing shall be secured in open-type reglets by means of lead plugs spaced not over 12 inches on centers, with the groove filled with calking compound and calked smooth after application. Friction or slot-type reglets shall have metal flashings inserted the full depth of slot and be lightly punched every 12 inches to crimp the reglet and metal flashing together. 11-5