Apparatus for barricading an outward swinging door to provide physical security

A system useable to barricade a door, comprising:

• an anchor comprising an upper portion and a lower portion, wherein the upper portion comprises a first vertical planar surface and a first key on the first vertical planar surface, and wherein the lower portion is configured to be insertable in an opening in a floor proximate to an inside surface of the door;
• and
• a lock affixable to the door, wherein the lock comprises a stop, a key plate, and a cross member, wherein when the lock is affixed to the door the stop is configured to be proximate to an outside surface of the door, the key plate is configured to be proximate to the inside surface of the door, and the cross member is configured to connect the stop and the key plate through an opening in the door, and wherein the key plate comprises a second key on a second vertical planar surface,
• wherein the upper portion is configured to engage the key plate by connection of the first and second keys when the lower portion is inserted in the opening in the floor, wherein inserting the lower portion in the opening in the floor brings the first and second vertical planar surfaces into contact, and wherein the first and second vertical planar surfaces are parallel with the door when the lower portion is inserted, wherein a bottom of the one of the first or second keys is configured to contact a bottom of the other of the first or second keys when the upper portion engages the key plate, wherein the bottoms of the first and second keys are perpendicular to the first vertical planar surface.