structural pipe supports

Essential for Reliable Industrial Infrastructure

Structural pipe supports keep piping aligned, safe, and within design limits by carrying weight, controlling movement, and absorbing loads from temperature change and vibration. In power plants, water/wastewater facilities, manufacturing, and utility networks, the right support design prevents leaks, fatigue, and unplanned downtime. Bunney’s Inc. engineers, installs, and maintains support systems for critical infrastructure across Arizona and the Southwest.

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What Are Structural Pipe Supports?

Pipe supports are devices/assemblies that transfer loads from the pipe to the structure while allowing the movements the system was designed for. Depending on service and environment, supports may be rigid, guided, or spring-loaded to manage gravity, thermal, seismic, and dynamic loads without overstressing joints and equipment nozzles.

Common Support Types (and When to Use Them)

  • Hangers (rod/clevis/Trapeze): Overhead suspension where vertical movement is limited and access is needed below.

  • Rigid supports & shoes: Fixed vertical support for horizontal runs; shoes reduce insulation damage and corrosion under insulation (CUI).

  • Guides & line stops: Control lateral movement and axial growth per flexibility analysis.

  • Anchors: Lock the line at strategic points to manage expansion and thrust loads.

  • Spring & constant supports: Compensate for vertical movement due to temperature/pressure changes while limiting load variation on equipment.

  • Rollers & slide plates (PTFE/graphite): Low-friction axial movement to reduce expansion stress.

  • Snubbers/struts & seismic bracing: Restrain dynamic/seismic loads while permitting thermal movement.

We design and detail to owner specs and applicable standards (e.g., ASME B31.1/B31.3, MSS SP-58/69/89, AISC/ACI guidance).

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    Engineering Considerations (Checklist)

    • Load cases: Operating, occasional (wind/seismic), test, and upset conditions

    • Thermal growth: Anchor locations, guide spacing, and expansion loops/joints

    • Equipment nozzle loads: Pump/turbine/heat-exchanger limits and allowable forces/moments

    • Vibration: Flow-induced and rotating equipment; need for snubbers/struts and tuned supports

    • CUI mitigation: Shoes, coatings, and drainage details to prevent moisture entrapment

    • Maintainability: Access for valves/PRVs, removable supports, and tagging for inspections

    • Documentation: Support indexes, tag IDs, isometric callouts, and torque/inspection records

    Arizona-Specific Design Factors

    • Extreme heat & UV: UV-resistant coatings/jacketing; high-temp insulation and slide materials

    • Dust/monsoon exposure: Weather-tight hardware and drainage details at supports and piers

    • Thermal swings: Adequate guide gaps and spring settings to accommodate daily/seasonal changes

    • Soil/settlement: Foundation checks for outdoor racks and at-grade sleepers

    Applications Across Industries

    • Power generation: Steam/condensate, circulating and service water, fuel gas

    • Water & wastewater: Large-diameter process, chemical dosing, and distribution headers

    • Manufacturing/process: Chemical, gas, air, and utility piping on racks, bridges, and mezzanines

    • Commercial/utility: HVAC, fire protection, and plant utilities with complex routing

    Benefits of Proper Support Design & Installation

    • Protects welds, flanges, and equipment nozzles from bending loads

    • Reduces leaks and fatigue, lowering maintenance frequency

    • Maintains alignment and flow, improving energy efficiency

    • Improves safety and compliance with plant/industry standards

    • Extends service life and reduces lifecycle cost

    How Bunney’s Inc. Delivers

    1. Assessment & Walkdowns – Verify existing conditions, movements, and hot spots

    2. Design & Detailing – Support index, tags, anchor/guide strategy, and materials

    3. Fabrication & Installation – Field fit-up, controlled bolting/torque, and QA checks

    4. Commissioning & Turnover – Spring cold/hot settings, as-builts, and inspection plans

    Why Partner with Bunney’s Inc.

    • Multi-industry experience across power, water, and industrial facilities

    • Code-aligned delivery (ASME B31.1/B31.3; MSS SP-58/69/89) with traceable QA/QC

    • Fast mobilization for outages and live-system tie-ins under strict safety controls

    • Lifecycle support: inspections, adjustments, replacements, and upgrades

    Related Services:

    FAQs

    How do I know if my supports are undersized or misplaced?
    Look for insulation wear, unusual noise/vibration, misalignment at flanges, or recurring gasket failures. A walkdown plus flexibility review will confirm.

    When should I use spring vs. constant supports?
    Use variable springs for moderate vertical travel; constant supports when load variation must be minimal (e.g., equipment nozzle limits).

    Can support upgrades be done while online?
    Many replacements and adjustments can occur under controlled conditions; intrusive work is scheduled during outages.

    What documentation do you provide?
    Support index and tags, set points (cold/hot), torque records, and as-built updates suitable for maintenance programs and audits.

    Do you inspect for seismic readiness?
    Yes—brace layouts, snubbers/struts, anchor qualifications, and post-installed anchor testing per project requirements.

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