Within Teamwork Projects, you can include the estimated time of recurring tasks in the Workload view.
When you set a task to repeat, we only create the first task in the sequence, and the next will be shown as soon as the current one is completed.
If you want to show the other tasks, hover over the task details and select the repeat icon for that task.
You will see a + icon next to each of the tasks set to reoccur. Once you select this the new repeat of the task will be created immediately, and the estimated time on the new repeat of the task will be included in the workload view totals.
For more information, see: Using the Workload view