TOLCO(R), a brand of NIBCO INC., offers TOLBrace Version 4.0, an invaluable software program for aiding in the design of earthquake bracing for fire protection systems. Ideal for contractors, design consultants and inspectors, this seismic bracing calculation program has many features, including: zone of influence calculations that are self-correcting; component load information; fastener load information and a complete summary sheet with brace assembly details in AutoCAD format. TOLCO(R). Circle 9.