The Rallying Cry of Secession. The appeal to states' rights is of the most potent symbols of the American Civil War, but confusion abounds as to the historical and present meaning of this federalist principle. South Carolinians crowd into the streets of Charleston in 1860 to hear speeches promoting secession.
A dry riser is a main vertical pipe intended to distribute water to multiple levels of a building or structure as a component of the fire suppression systems. The pipe is maintained empty of water. The dry riser is the opposite of a wet riser or wet standpipe system where the pipes are kept full of water for manual or automatic fire fighting operations. Dry risers have to allow access to a fire engine within 18 m of the dry riser inlet box.
Riser: An extra void in the mold that fills with molten material to compensate for shrinkage during solidification. Gating system: The network of connected channels that deliver the molten material to the mold cavities. Pouring cup or pouring basin: The part of the gating system that receives the molten material from the pouring vessel.