Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

Chapter 2 GATE DESIGN
Bulkhead gates are large fabricated steel or stainless steel gates placed in guides normally
embedded in concrete. It is custom-designed for size and head requirements and normally side and
bottom seals are incorporated. Bulkhead gates are normally removed under balanced head
conditions and as such rollers may not be required. Special design can include fill valves on the gate
and seals across the top to seal on a lintel where the unit will close a submerged opening (See
Figure 2.22).
2.3 GATE DESIGN
2.3.1 General
Figure 2.22 Bulkhead
A hydraulic gate shall be designed with the following considerations:-
a) Safety against predictable load
b) Sufficient water tightness suitable with its application
c) Easy and reliable operation
d) High durability
e) Free from any harmful vibrations during operation
f) Easy maintenance
A list of gate design steps could consist of the following:-
a) Obtain general information on gate height, width and max. water head
b) Determine design loads to be considered
c) Determine spacing of horizontal girders
d) Determine centroids of sections
e) Determine loading carried by each girder
f) Determine max. bending moment of girder and girder size
2-18 March 2009