There are a total of six workshops throughout Wintergrasp, two are housed inside Wintergrasp Fortress, on the East and West sides. These workshops cannot be captured but can be destroyed. Two workshops, the East and West on the Broken Ring and Sunken Ring zones respectively, are right outside the fortress and can be captured or destroyed. Two workshops on the Southeast and Southwest, called the Eastspark Workshop and Westspark Workshop respectively, are like the workshops inside the keep. They cannot be captured but can be destroyed. Because each faction permanently controls 2 workshops, players can always create a minimum of 8 vehicles, up to maximum of 16 if they control both the East and West workshops. You can buy cheap wow gold here !

The number of workshops under a faction's control, whether intact or destroyed, determines the maximum number of siege vehicles that faction can deploy. Each workshop entitles a faction to four siege vehicles.If a workshop is destroyed, it will no longer be able to produce any more vehicles. So while each side will always be allowed a minimum of eight vehicles, it's entirely possible to cut off vehicle supply. Capturing either the East or West workshop after it has been destroyed will repair it.
Buy cheap wow gold here !