A civil engineering damper for damping civil engineered structures comprising a damper housing including two dynamic fluid chambers within a piston cylinder and two static fluid chambers straddling the dynamic fluid chambers along an axis of the housing a piston mounted for reciprocation along the axis of the damper housing. A piston web portion divides the piston cylinder into the two dynamic fluid chamber. A restricted passageway through the piston web portion includes an orifice that provides a resistance to fluid flow between the dynamic fluid chambers. The damper also includes regulated passageways between adjacent dynamic and static fluid chambers valved to allow a flow of fluid from the static fluid chambers to the dynamic fluid chambers and check flows of fluid from the dynamic fluid chambers to the static fluid chambers.