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Plastic Spacer 110 mm 1 Way Base
Plastic Spacer 110 mm 1 Way Base
Heavy-Duty Single-Duct Base Support for HDPE Conduits in KSA & GCC
Typical specifications
Note: exact values change by maker. Always confirm supplier datasheet for procurement.
Product name: Plastic Spacer 110 mm 1-Way Base
Type: Base spacer — single channel (1-way)
Compatible duct OD: 110 mm (nominal; fits HDPE/PE/PVC ducts ~110 mm outer diameter)
Material: UV-stabilized Polypropylene (PP) / or HDPE grade (virgin polymer recommended)
Color: Natural / Black (UV) / Custom color on request
Nominal height: 40–80 mm (varies by design; maintains required concrete cover)
Bearing area: Full base plate sized to spread load; manufacturer dependent
Operating temperature: −20 °C to +85 °C (service); short term peaks higher per polymer spec
UV resistance: Yes (UV stabilizers added)
Chemical resistance: Excellent to soil chemistries, cement, alkalis, oils
Compressive strength: Typical > 1,500 kg/m² (check datasheet)
Impact resistance: High — injection moulded with impact modifiers
Weight: Approx. 0.4–1.2 kg per piece depending on design
Finish: Smooth edges, rounded seats to prevent duct abrasion
Packaging: Bulk cartons or palletised bags; custom pack sizes available
Standards / tests: Manufacturer tensile/compression tests; ISO 9001 factory preferred
Material composition & manufacturing process
Material selection
Typically, the spacer is constructed using either virgin PP or HDPE. PP is the material of choice because of its reasonable combination of stiffness, chemical resistance, and cost, while HDPE provides a higher toughness in some blends. The Gulf mixture of polymers consists of UV stabilizers, antioxidants, and sometimes impact modifiers or small mineral fillers to control stiffness and dimensional stability.
Manufacturing
- Compounding: The resin pellets go through a process of blending with other materials like stabilizers, pigments, and additives.
- Injection moulding: The base plate together with a single duct seat is produced in one operation due to the high precision steel moulds that ensure accurate dimensions.
- Cooling & trimming: The components are cooled, ejected, flash trimmed, and visually inspected.
- Quality control: Dimensions verification (channel diameter, spacing, base flatness), compression/impact spot tests, and marking of batches are done.
- Marking & packaging: Lot codes, part numbers, and orientation arrows are printed or molded for easy locating at the site.
Design considerations
- Slightly rounded and smooth contact surfaces that are less likely to cause any wear on the outer skin of the duct.
- Ribs are strengthened in the foundation so that they can withstand the compression and also distribute the loads under a heavy overburden.
- Optional drainage channels that will let water not to be stagnant under the duct.
- Some products have base perforations for mechanical keying into sand bedding.
How it is used — installation & best practice
Pre-installation prep
Confirm trench bed is level and free of sharp stones / debris. Use sand bedding as per spec (typically 50–100 mm).
Verify duct OD and spacer channel match; test-fit sample spacer with duct before mass installation.
Installation steps
Lay sand bedding: Level and compact per project spec.
Place base spacer: Position Plastic Spacer 110 mm 1-Way Base at specified intervals along the trench (commonly 0.8–1.2 m for long runs—adjust per design load and duct stiffness). Align orientation arrows if present.
Seat duct: Lower the 110 mm duct into the single channel. Ensure duct rests fully and is not tilted.
Repeat spacing: Install the next base spacer distance along the run. For long conduit spans, maintain a consistent interval to avoid sagging.
Intermediate & top supports (if multi-layer): If the duct bank includes several runs stacked, use appropriate intermediate/top spacers for higher layers. For 1-way bases, top components may not be necessary if single layer.
Backfill / concrete encasement: Backfill or concrete per project specification. Monitor spacer position during compaction to ensure unchanged alignment.
Inspection before cable install: Visual check for deflection, cracking or movement.
Spacing guidance
Typical installation interval: 1 m standard for medium duty. For heavy vehicle loads or shallow cover, reduce spacing to 0.5–0.75 m as specified by engineer.
End-of-run and bends: increase spacer density near entries, bends and manholes.
On concrete encasement
Ensure base spacer height provides designed concrete cover. Many projects require minimum cover to maintain mechanical protection and thermal performance.
Applications — where and why it’s used in Gulf projects
Power & electrical
The heavy-duty support of the large conduits that are either the medium voltage feeder ducts, instrument conduits, or cable protection pipes in substations or utility corridors is a single support.
Telecom & fibre backbone
The major HDD ducts are one single protector and aligner that can accommodate multiple microducts or large fiber bundles.
Water, SCADA & telemetry
The 1-Way Base used on the single conduit carrying instrumentation or utility cables provides convenient and clean support.
Oil & gas / petrochemical
The single conduits are deployed in the plants where fire resistance and chemical inertness are the most important factors.
Civil construction
The big conduit going under the highways, bridges, and airport taxiways needs strong support from the foundation to be unharmed under heavy weights.
Renewable & industrial
Solar farm collector lines, plant utilities, and single larger ducts running long distances are the examples where such situations arise.
Advantages & buyer value propositions for KSA & GCC
Corrosion resistant: Plastic does not rust — essential near coastal, saline conditions across Gulf ports and cities.
Non-conductive: Adds safety when installed near power ducts or earthing systems.
Lightweight & ergonomic: Faster handling and fewer manpower hours on site—important in hot climates where worker fatigue matters.
UV-stabilized for staged works: Many projects require long staging before backfilling; UV additives prevent premature embrittlement.
Cost effective: Lower lifecycle cost than metal alternatives due to no anti-corrosion treatment and long service life.
Consistent geometry: Helps maintain alignment for cable pulls and reduces chance of duct crushing — direct savings on rework.
Reusable & recyclable: Aligns with Gulf sustainability targets (e.g., Saudi Vision 2030 initiatives).
Buying guide & procurement checklist (for KSA/Gulf buyers)
Before procurement teams can place any orders, they need to check the following:
- Part type: 110 mm 1-Way Base — no intermediate/top.
- Material grade: Virgin PP or HDPE with UV stabilization — request compound specification sheet.
- Channel dimension tolerance: Verify that it accommodates the actual duct outer diameter (OD) plus tolerance.
- Load capacity: Obtain compressive load tests or a certificate of specification as evidence.
- Quantity & packaging: Find out what carton/pallet configurations are the most site-friendly.
- Local stock & lead time: Choose the one with GCC warehousing (Riyadh, Jeddah, Dubai) to minimize time delays.
- Certifications & QC docs: ISO 9001, batch test reports and material certificates.
- Sample before bulk: Request a sample run for fitting and site compatibility purposes.
- Price negotiations: Ask for pricing for large infrastructure contracts; consider logistics weight savings as an option.
- Warranty & Replacement terms: Reach an understanding on defect replacement policies.
Packaging, storage & logistics
Packaging options
Loose bulk in sacks, labelled cartons, or palletised stretch-wrapped cartons with product and lot ID.
Storage
Store under shade until installation; prolonged sun exposure may still degrade non-UV-grade stocks.
Avoid stacking heavy loads on top of spacers to prevent deformation.
Keep inventory rotation and batch traceability for QA.
On-site handling
Transport in crates or pallets; use manual handling for individual pieces.
Avoid dropping onto sharp surfaces that can nick the spacer seat.
Quality assurance & testing
The manufacturers will have to allow access to such test procedures or at least do so in their own way:
- Dimensional inspection: Tolerances of the channel and base flatness will be checked.
- Compressive strength test: The application of load by means of plate compression will occur until a certain limit is reached.
- Impact test: The purpose is to check if the item will fracture or not through the handling scenario.
- UV ageing test: A method of accelerated weathering (e.g., ASTM G154 or one similar) is used to demonstrate the lifespan of the product through testing.
- Material certificate: Inclusion of resin type, additives used, and melt flow rate (MFR).
Environmental & sustainability notes
Recyclability: PP and HDPE are widely recyclable; ask supplier about post-consumer recycling pathways.
Reduced concrete usage: Using optimised plastic spacers can reduce some concrete seating accessories, lowering embodied carbon.
Long service life: Fewer replacements reduces waste over project lifetime.
Pricing & ROI considerations
- Unit cost versus system cost: The unit cost of the plastic spacer might be higher than that of the ad-hoc stone bedding, but the lifecycle savings (less rework, quicker installation, no corrosion) lead to a lower total cost of ownership.
- Bulk discount: For large-scale projects (e.g. thousands of meters), participate in the unit prices and warehouse agreements in KSA or UAE.
- Logistics savings: The light weight of the spacers allows for lower transportation costs than those for metal or concrete supports.
Installation examples & case scenarios (Gulf focus)
Scenario 1 — Highway duct underpass (Riyadh)
Single 110 mm power conduits placed using 1-Way base spacers every 0.75 m; minimized deflection under heavy truck loads.
Scenario 2 — Coastal telecom backbone (Dubai)
Large HDPE protective ducts installed along port corridor; UV-stabilized 1-Way base spacers allowed staged works without damage for weeks.
Scenario 3 — Refinery instrument duct (Dammam)
Single 110 mm control conduit supported in corrosive soil using PP spacer — no metal contact, long term reliability.
Conclusion & call to action
The Plastic Spacer 110 mm 1-Way Base is an uncomplicated but essential component for large duct placements in the KSA and Gulf area. The combination of its strength without being too heavy, and its resistance to corrosion along with UV-stabilized polymer chemistry makes it perfect for extreme climatic and industrial environments such as Riyadh, Jeddah, Dammam, Dubai, Doha, and Muscat.
It is advisable for project teams to make sure: material and load specifications, ask for samples, and pick base spacers in combination with the appropriate intermediate/top components when constructing multi-layer duct banks. In the case of the purchasing department: obtain from suppliers that have distribution centers in the GCC for swift delivery and request quality assurance by receiving batch test certificates.
Frequently Asked Questions (FAQ)
Q1: What is a 1-Way base spacer?
A: A single-channel base unit designed to support one duct (here ~110 mm OD) and act as the foundation in a duct bank.
Q2: Why use plastic instead of concrete or metal?
A: Plastic is corrosion-free, lightweight, fast to install, non-conductive and often more cost-effective over life cycle in Gulf conditions.
Q3: How far apart should I place 1-Way base spacers?
A: Standard practice is 0.8–1.2 m; for shallow cover or heavy loads reduce spacing to 0.5–0.75 m per engineer spec.
Q4: Can spacers be exposed on site before backfill?
A: Yes if UV-stabilized; avoid prolonged exposure of non-UV grades.
Q5: Will the spacer damage the duct outer jacket?
A: No — designed with smooth, rounded seats; confirm seat radius matches duct OD.
Q6: What load can a 110 mm 1-Way base spacer handle?
A: Typical compressive strength exceeds 1,500 kg/m² but confirm with manufacturer test sheet.
Q7: Are these reusable?
A: Yes, if removed undamaged they can be reused.
Q8: Do I need to use intermediate or top spacers with 1-Way base spacers?
A: Only if creating multi-layer duct banks; for single duct runs no additional spacers required.
Q9: How to order for large projects?
A: Provide project quantity, packing preference, delivery location (Riyadh, Jeddah, Dubai, etc.) and request datasheet & sample.
Q10: Are there local suppliers in KSA & GCC?
A: Many suppliers stock spacer products regionally; procure from vendors with GCC warehousing for rapid delivery.
Premium Plastic Spacer 110mm 1-Way Base | Supplier, Manufacturing & Delivery
Premium 110mm 1-Way Base Plastic Spacer for Utility & Telecom Duct Banks
The 110mm 1-Way Base Plastic Spacer is a critical part of the agreement between EPC contractors, telecommunications companies and utilities in Saudi Arabia, as well as in other Gulf countries. The 1-Way Spacer is designed to support a single 110mm plastic pipe or conical pipe in the underground duct bank system and helps ensure accurate alignment with the duct bank, prevents the movement of individual components during the backfilling process, and guarantees long-term durability of the underground duct bank system.
Reasons for Selecting 1-Way Spacers
• Manufactured from high-strength, UV-stable polymer;
• Designed exclusively to provide support for single 110mm pipes;
• Provides a stable base for multi-layer duct banks;
• Minimizes the movement of pipes due to loads placed on the soil or concrete;
• Can be used with HDPE ducts, PVC fittings, and telecommunications microduct tubing.
Saudi Ducts provides a comprehensive directory of verified suppliers and certified manufacturers to connect buyers and sellers in the Riyadh, Jeddah, Dammam, NEOM and other Gulf Region markets. All inquiries regarding pricing, delivery, and procurement are handled directly between buyers and sellers.
110mm 1-Way Base vs 2-Way Intermediate Spacer— Key Differences & Best Industry Practices
110mm 1-Way Base vs 2-Way Intermediate Spacer — Key Differences
| Feature | 1-Way Base Spacer | 2-Way Intermediate Spacer |
|---|---|---|
| Position | Bottom of trench | Between stacked conduits |
| Function | Foundational support | Maintains vertical separation |
| Load Handling | Supports single conduit | Supports upper conduit layers |
| Installation Stage | Initial trench setup | After base layer placement |
Best Industry Practices for Installing 110mm 1-Way Base Spacers
Prior to placing base spacer, level and compact trench bed. Make sure pipeline is fully seated in spacer groove. When installing intermediate layers, check alignment along trench section before continuing. Compatible with both HDPE & PVC conduits, rated to 110mm systems. Adhere to spacing standards (i.e., project) for trench interval spacing. Properly installed conduits significantly reduce:
✔Misalignment of conduits
✔Damage to cables due to friction
✔Deformations of ducts
✔Maintenance issues/growth rates on telecommunication & utility systems.