Le béton demande beaucoup de temps avant de durcir complètement, vous pourriez voir apparaître des fissures capillaires. Ces fissures ne permettent pas l’infiltration d’eau. Si votre fissure n’est pas plus large que l’épaisseur de trois cartes de crédit (3mm), vous n’avez pas à vous inquiéter. Par contre, il faudra cependant vous occuper des fissures plus grossières en les corrigeant vous-même ou en les faisant corriger par un entrepreneur spécialisé.
Apple released three computers bearing the Centris name: the Centris 610 (replacing the Macintosh IIsi) and Centris 650 (replacing the Macintosh IIci in form and the Quadra 700 in function), both of which were introduced in March 1993, and the Centris 660AV which followed in July. Apple also considered the Macintosh IIvx to be part of the Centris line. The IIvx was released in October of the previous year, but, according to Apple, their lawyers were unable to complete the trademark check on the "Centris" name in time for the IIvx's release.
The retirement of the Centris name was announced in September 1993, with the 610, 650 and 660AV all being rebranded the following month as Macintosh Quadra machines as part of Apple's effort to reposition their product families to correlate with customer markets instead of price ranges and features. The IIvx was also discontinued in favor of the newly-announced Quadra 605.