Because the glass- aluminum curtain wall is exposed to the outside environment, thermal expansion and contraction must be taken into account in the design of the wall. In a stick- built curtain wall, are the movement joints (called expansion joints)provided in both rails and mullions? If provided in only one of the two members, which one and why?

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The Answer of Because the glass- aluminum curtain wall is exposed to the outside environment, thermal expansion and contraction must be taken into account in the design of the wall. In a stick- built curtain wall, are the movement joints (called expansion joints)provided in both rails and mullions? If provided in only one of the two members, which one and why?

Because the Glass- Aluminum Curtain Wall Is Exposed to the Outside