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Centering Against Your Studs

Le 'problème des 40 cm' d'une ossature:

Dans le cas d'une étagère de 120 cm, il n'y a pas de problème de fixation.

Dans le cas d'un rail de 75 ou 80 cm, seuls 2 des 3 montants du mur creux peuvent être utilisés pour la fixation.
Les poutres de l'ossature ont en général des dimensions de 5 x 10 cm ou, en Europe, de 4 x 8 cm. Mais en
moyenne, ce n'est pas toujours exact, souvent même plus petit. C'est là que réside le problème, à savoir que
les vis ne peuvent pas être vissées au centre.

A 16” bracket is not long enough to safely hit two studs dead centre. Using an 18” bracket will allow the bracket to stick out past the stud by 1/8”, and enable you to centre your screws in your studs.

Likewise, on a 34” bracket, you will also extend past the stud by 1/8”, whereas a 32” bracket will not.

As you can see, the screw head is already 6/16" (3/8) big and we only have 7/16" of room left in the stud to drill into. The screw itself is only 3/16" thick though, and if you drill to the right, you will miss the stud. Even if you're perfectly straight on, you are only in the stud by 1/4 of an inch. If you drill to the right you are fine, but then the pan head screw does not sit flush on the bracket anymore. And we must also remember that no stud is perfect - they are warped, not exact at 16" center, etc.

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