In roller bearing for a given movement the roller bearing exhibit a change in pressure centre from its original position […]
What is the advantage of sliding bearings over roller bearings? Read Post »
There are three common arrangements of wing walls in bridge abutments based on Dr. Edmund C Hambly (1979): (i) Wing
Grillage analysis suffers from the following shortcomings based on E. C. Hambly: (i) For coarse mesh, torques may not be
(i) Spalling reinforcement Spalling stresses are established behind the loaded area of anchor blocks and this causes breaking away of
What are the three major types of reinforcement used in prestressing? Read Post »
In pumping operation, the force exerted by pumps must overcome the friction between concrete and the pumping pipes, the weight
What are the major problems in using pumping for concreting works? Read Post »
Preset is a method to reduce the size of upper plates of sliding bearings in order to save the material
What is preset during installation of bridge bearings? Read Post »
Grout in prestressing works serves the following purposes: (i) Protect the tendon against corrosion. (ii) Improve the ultimate capacity of
What are the functions of grout inside tendon ducts? Read Post »
(i) For abutment pier to be assigned as fixed pier while the bridge is quite long, the longitudinal loads due
What are the advantages of assigning the central pier and the abutment as fixed piers? Read Post »
In a typical expansion joint, it normally contains the following components: joint sealant, joint filler, dowel bar, PVC dowel sleeve,
What are the functions of different components of a typical expansion joint? Read Post »