Earthquake-resistant equipment rack

A rack for electrical equipment comprising:

• a base including access apertures for receiving wires therethrough and mounting apertures for securing the base to a floor upon which the rack is mounted;
• a pair of vertically extending upright members having lower ends secured to opposite sides of the base, each upright member having a web, opposing first and second flanges projecting from the web, and openings for mounting electrical equipment thereon;
• a cross member extending between upper ends of the upright members;
• and
• wherein at least a portion of one of the flanges of the upright members tapers towards the web from the lower ends of the upright members.

A rack for electrical equipment comprising:

• a base including access apertures for receiving wires therethrough and mounting apertures for securing the base to a floor upon which the rack is mounted;
• a pair of vertically extending upright members having lower ends secured to opposite sides of the base, each upright member having a web, opposing first and second flanges projecting from the web, and openings for mounting electrical equipment thereon;
• a cross member extending between upper ends of the upright members;
• and
• at least one brace secured to the cross-member and extending through the web of each upright member, and secured to one of the flanges of each upright member.

A rack for electrical equipment comprising:

• a base including access apertures for receiving wires therethrough and mounting apertures for securing the base to a floor upon which the rack is mounted;
• a pair of vertically extending upright members having lower ends secured to opposite sides of the base, each upright member having a web, opposing first and second flanges projecting from the web, and openings for mounting electrical equipment thereon;
• a cross member extending between upper ends of the upright members;
• and
• wherein the base includes a bottom plate, side channels extending at an angle between the bottom plate and the webs of the upright members, and a central channel extending horizontally between the side channels.

A rack for electrical equipment comprising:

• a base including access apertures for receiving wires therethrough and mounting apertures for securing the base to a floor upon which the rack is mounted;
• a pair of vertically extending upright members having lower ends secured to opposite sides of the base, each upright member having a web, opposing first and second flanges projecting from the web, and openings for mounting electrical equipment thereon, wherein at least a portion of one of the flanges of each of the upright members tapers towards the web from the lower ends of the upright members;
• separate flange reinforcing plates secured flat against interior surfaces of the flanges of the upright members and extending vertically from the lower ends of the upright members;
• a cross member extending between upper ends of the upright members;
• at least one brace secured to the cross-member and extending through the web of each upright member, and secured to one of the flanges of each upright member;
• side channels extending at an angle between the base and the webs of the upright members;
• and
• a central channel extending horizontally between the side channels.