Pretread.com, a reliable source for bridge bearing, neoprene bridge bearing , elastomeric bearings,  ptfe teflon sliding bearings, steel pot bearing, mechanical steel bridge bearings  sliding bearing ptfe Teflon  pipe supports, rubber modular elastomer expansion joint, rubber gaskets is established from 1999 in United Arab Emirates Dubai UAE with ISO certification for design and manufacturing offer products commonly known as bridge bearing, neoprene bridge bearings rubber bearing, steel mechanical bearing, pot bearing, guided mechanical bearing in neoprene, for  bridge building bearing applications replacement  manufacturer manufacturers design designing types supplier installation

 

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Bearing Load Calculations

Bridge Bearing design calculation Bridge bearing design calculation starts with a bearing schedule and bridge designer is responsible to prepare bearing schedule, which should contain vital information like detailed list of forces, movements and performan

Bridge bearing design calculation starts with a bearing schedule and bridge designer is responsible to prepare bearing schedule, which should contain vital information like detailed list of forces, movements and performance characteristics which is directly from design of bridge or structure.
 
On receipt of above inputs in a formal Bearing schedule ( which can be downloaded from downloads, ) bearing designer -normally manufacturer side -  use  information received  to determine  design values with full specification. Most useful and informative  schedule  template  given for bearing design, is  in Table B.1 Annex B of BS EN 1337-1[1] or can find similar schedule in AASHTO LRFD.
 
For bridge bearing design calculations, required design criteria include:
 
Longitudinal and transverse movement
Longitudinal, transverse, and vertical rotation
Longitudinal, transverse, and vertical loads
Shear modules used in structure design
Maximum vertical deflection – based on structure design
Longitudinal and transverse  shear stiffness 
 
To meet AASHTO or BS EN requirements following design steps are to be followed meticulously and a well-defined design calculation sheet will be submitted to bridge designer for approval of bearing type and size.
 
1 - Obtain Design Criteria
2 - Optimum Bearing Type
3 - Preliminary Bearing Properties.
4 - Design Method A or B as per AASHTO LRFD
5 - Compute Shape Factor - 
6 - Compressive Stress - 
7 - Compressive Deflection - 
8 - Shear Deformation - 
9 - Rotation or Combined Compression and Rotation
10 - Stability
11 - Reinforcement
12 - Design for Anchorage
13 - Design Anchorage for Fixed Bearing
14 - Draw Schematic of Final Bearing Design
 
Above bridge bearing design calculations steps clearly shows that bridge bearings sourced from any bridge bearing manufacture offering bearing sizes without design sheet will only end up Project in disaster. Indicative dimensions of bearings provided in our catalogue are only indicative and only for reference. 
 
Sourcing bearing size and structure designed by pretread.com- a copy of bridge bearing design calculation of  pretread.com passed over to alternative manufacture is also end up in disaster, as our designs are based on many years of experience in design  manufacturing prototyping and  testing,  superior quality of rubber neoprene compound and rigorous  post production testing and bridge inspection is followed. Contact us to design correct bearing for your Projects with bearing schedule.
 

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M/s.Polymet Industries LLC
Shed No WIZ06 
Ware House No 23-29-31
RAKIA- Ras Al Khaimah 
United Arab Emirates 

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Hamriyah Freezone -Sharjah 
United Arab Emirates  

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