In selection of waterstop, shall engineers use plain dumb-bell type or center-bulb type

Chetan Yadav

Staff member
In selection of waterstop, shall engineers use plain dumb-bell type or center-bulb type?

Answer: The plain dumb-bell type is used for joint location where small movements are anticipated.
Therefore, construction joints are desirable locations of this type of waterstop. On the other hand, center-bulb type water-stop is suitable for expansion joints or locations where lateral and shear movements occur due to settlement or deflection. Reference is made to W. L. Monks (1972).