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Bridges
Since the early 1960s, The D.S. Brown Company has provided expansion joint systems and specialty products for bridges around the globe.
Expansion Joint Systems
- What's the maximum dimensions that Delcrete can be installed on a bridge expansion joint application?
- Strip Seal: What is the minimum opening for seal installation?
- Strip Seal: What is the preferred upturn configuration when not specified?
- What is the maximum box spacing on a modular joint?
- Can a modular joint be field spliced at every lane line?
- How do you support strip seal frame rails for installation?
- What tools can be used to clean out excess weld in the cavity where the neoprene strip seal goes?
- Question: What is the degree cutoff when determining whether or not a strip seal gland needs to be mitered?
- Question: What limitations are there with regards to weather when field vulcanizing strip seal glands?
- Question: What is the bare minimum opening to install strip seal glands in the field?
- Question: How many bags of aggregate are in Delcrete® 3.7, 4.0 & 5.6.? How many units on a skid?
- What is the minimum depth for a Steelflex Modular Expansion Joints?
- How long before you can put live traffic on Matrix 502?
- Does D.S. Brown provide tabs, hardware, bars, etc. for lifting and lowering the modular joints into the blockouts?
- What are the requirements for the installation of the epoxy adhesive during cold and hot weather?
- What is the working life on the J-Seal epoxy after being mixed?
- What is an appropriate distance between temperature adjustment devices and does it vary by joint size?
Structural Bearing Assemblies
- What shear modulus should I use for bearing design?
- Question: Can you metalize a bolster?
- What is the approximate expected life span of dimpled PTFE bearings?
- How do you calculate the vertical deflection of a steel-reinforced elastomeric bearing?
- What do you do when the elastomeric bearing is wider than the girder flange?
- Is there any construction benefit to bonding the pad to one or both top and bottom bearing plates instead of using stop bars?
- When should you consider beveling a sole plate?
- What is the max shear deformation (translation) of an elastomeric bearing?
- Should sole plates be welded to the girders before or after the dead load has been applied?
- What bearing should be used when the structure has a chance of flooding or may see high water conditions?
- What are typical Polytetrafluoroethylene (PTFE) thicknesses? For dimpled PTFE, can you change the dimple size and spacing?
- What adhesive would you suggest for bonding laminated bearings to abutment seats or elastomeric pads to girder stops?
- What is the max temperature when welding near an elastomeric bearing?
- Can a laminated bearing be bonded to a plate that has headed studs already welded to the plate?
- What is the largest laminated elastomeric bearing D.S. Brown can fabricate?
- Can a laminated bearing be bonded to a plate that has headed studs already welded to the plate?
- How should I move the bearings once they are on the jobsite?
- Can you use stainless steel shims in laminated elastomeric bearings?
- What is the minimum required vertical load for an HLMR bearing?
- What is the largest bearing D.S. Brown can test?
- Can you refurbish Steel Bearings?
- Is there any issue with field painting HLMR or VEB sliding bearings?
- Can you recommend a bonding agent if we are only supplying VEBs (Versiflex™ Elastomeric Bearing Assemblies).
- When should you consider an HLMR bearing assembly instead of an elastomeric bearing assembly?
Modular Joints
- Can Ultrasonic Testing (UT) be done of the full-penetration center beam field welds?
- What’s a good rule of thumb for distance between temperature adjustment devices for Steelflex Modular Expansion Joint Systems? Does it vary by joint size? If so, can you provide general guidance?
- Does galvanized coating cause a problem for installing strip seal gland?
- What are the best field splice locations?
- Modular Expansion Joint Systems: How can back gouging be performed in the field down the vertical face of the center beams with minimal clearance between the rails?
- Modular Expansion Joint Systems: Can angle at back of support box be removed (large modular joints)?
- Modular Expansion Joint Systems: Can you partially install a seal in a modular joint?
- Where can I find field weld details?
- Modular Expansion Joint Systems: Do field welds need to undergo Ultrasonic Testing?
- What is the optimal recess below a roadway surface for Modular Expansion Joint Systems?
- Question: Do Steelflex® Modular Expansion Joint Systems work on curved structures?