Documents
Bridge deck segmentation
The segments are generally precast and erected by crane or by special erection equipment, such as a gantry or lifting frame. They may also be cast in situ, although this is rare.Precast I or T beams are normally topped with a concrete layer that is ca
Precast or in-situ construction
Few bridge decks can be poured in a single operation. Most are constructed in stages, with the decks generally formed from elements by dividing them either longitudinally into beams or transversely into segments. Some very wide structures may be divid
Each bridge is a unique structure
The method of construction normally goes hand in hand with bridge design and both depend upon many factors and constraints. These include - but are not limited to - economy of construction, availability and cost of local resources, environmental issu
Road Surface Maintenance
Road surfaces should be reworked only as necessary to provide a smooth running surface and a good crown or slope for drainage. All-season roads will require continual monitoring for surface and subgrade wear or deterioration. Rutting and loss of balla
ROAD MAINTENANCE
Road maintenance is essential in order to (1) preserve the road in its originally constructed condition, (2) protect adjacent resources and user safety, provide efficient, convenient travel along the route. Unfortunately, maintenance is often neglecte
Transportation, storage and installation of the bridge expan
Transportation After assembling according to design requirements, the bridge expansion device will be transported to the construction field by manufacture or the used. If its length surpass the allowable transporting limit or can be integra