What this guide decides.
This page decidesWhich terrain and civil interfaces must be surveyed, drawn, priced and assigned.
This page does not decideUniversal post spacing, foundation dimensions, anchors, structural capacity or suitability for a specific soil.
Ground interface context · external manufacturer animation
See why the bottom edge and its support belong on the same detail.
This short CLD Physical Security Systems animation makes a product-specific ground interface visible: modular support units form a continuous line, the framed mesh panel is introduced, and its lower edge sits within the support arrangement. It is useful as a coordination prompt for survey, drainage, support, tolerances and inspection—not as a universal foundation detail.
Procurement takeaway: require the surveyed line and levels, permitted ground-following method, support or trench cross-section, panel-to-support connection, drainage and erosion treatment, concrete/backfill and reinstatement sequence, tolerances, inspection hold points, civil designer, system supplier and approval owner on one detail. Do not infer dimensions or capacity from the animation.
Source boundary: CLD Physical Security Systems published this product-specific Modsec Securus S1 animation about three years ago. It is not XIEHENG product or project footage, has no selectable YouTube captions, and does not prove foundation capacity, structural performance, drainage, tested security classification, corrosion life, suitability for slopes or compliance for another system or site.
Survey the full line.
Record coordinates, levels, gradients, corners, retaining structures, drainage routes, ditches, utilities, pavements, changes of substrate and access for excavation or installation. A single typical bay is not a site model.
Choose how the fence follows ground.
Stepped panels, raked or special panels and local transition pieces change posts, bottom clearances, visual alignment and evidence scope. Confirm any permitted gradient or configuration limit attached to a tested system.
Control the bottom interface.
State the maximum accepted gap and how changes in level, erosion, soft ground, culverts, drains and walls are treated. Buried or below-ground barriers are separate design items and must consider drainage, corrosion and maintainability.
Allocate civil design and inspection.
The responsible engineer should define loads, ground data, foundation or anchor design, concrete and reinforcement requirements, tolerances and inspection. The supplier should identify component reactions and interfaces only when verified for the offered configuration.
Check construction access and sequence.
Survey information must be usable by the people pricing excavation, concrete, panel handling and reinstatement. Record restricted working width, overhead constraints, traffic control, spoil handling, concrete access, coating protection and whether gates or special panels must be installed before adjacent work closes the route. The sequence should also preserve drainage and inspection access rather than burying unresolved transitions behind later paving or landscaping.
Select a ground-following strategy by condition.
The final detail depends on survey, soil, loads, drainage and the offered system. These routes organize coordination; they are not universal construction details.
Resolve civil interfaces before fabrication release.
A controlled fence layout should show where standard bays end and project-specific details begin.
- 01
Capture a usable survey
Record fence-line coordinates and levels plus walls, drains, utilities, slabs, roads, obstructions and installation access. Flag areas that could not be observed.
- 02
Segment the fence line
Group straight level runs, gradients, steps, corners, structures, openings and drainage crossings. Assign a detail type and owner to each transition.
- 03
Confirm component and civil inputs
Obtain verified post reactions or interface data for the offered configuration and route foundation, anchor and substrate decisions to the responsible engineer.
- 04
Review tolerances and constructability
Check how survey error, excavation, concrete position, panel dimensions, coatings, equipment reach and sequence affect alignment and gaps.
- 05
Inspect and preserve the baseline
Record hold points, installed levels, gaps, supports, drainage condition and as-built changes so later settlement or erosion can be identified.
Project-input schedule.
Carry these fields into the enquiry, drawing review and approval record. Mark unknowns as open items instead of guessing.
Civil questions to close before pricing and release.
- Which parts of the fence line have surveyed levels and which remain assumptions?
- Where do standard panels stop and special transitions begin?
- Who designs foundations, anchors, walls, drainage and below-ground barriers?
- How will the required bottom condition be checked across slopes and structures?
- Which buried services or access constraints change excavation and installation?
- What inspection evidence is required before supports are concealed?