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GLASS HARP RACK | STATIC SHELF INTEGRATION
Have an idle zone beneath a static shelf? In project 13532, four Hrack glass harp racks turn the lower bay into 100 controlled sorting positions for 12mm glass—so one cabinet can hold reserve sheets and support active picking.
For hollow-glass and deep-processing plants, the bottom of a static shelf often becomes dead space: too low for convenient bulk storage, but large enough for a controlled single-sheet work zone. The 13532 layout addresses that gap with four 650 × 2400 × 1900 mm Hrack units placed beneath a 2700 × 2400 × 2000 mm static shelf. The result is not a claim that every harp rack fits every shelf. It is a project-specific integration that must be checked against clear height, bay width, access, floor condition, and the rack drawing.
The operating idea is simple: the upper shelf remains the reserve-storage layer, while the lower Hracks create numbered positions for individual sheets moving toward cutting, edging, washing, tempering, laminating, or IGU assembly. In the confirmed project arrangement, each rack holds 25 sheets of 12mm glass; four racks provide 25 × 4 = 100 sheet positions, with the stated combined glass load at approximately 2,500kg. That calculation belongs to this project—not a universal Hrack rating. The final combined load and frame interface require drawing review.
Can a glass harp rack sit under a static shelf?
Yes, when the shelf base is treated as an engineered installation zone rather than an improvised parking space. The 13532 case uses four mobile sorting racks under the static structure, preserving the upper shelf while adding single-sheet access below. Before approval, measure the true opening after beams, posts, braces, sprinkler clearance, and floor irregularities are included. Confirm that the 1900mm rack height and 2400mm rack length match the intended bay, and maintain a workable route for loading and retrieval. Hrack is a solution-type product: dimensions, slot count, caster choice, bottom support, and locking arrangement are configured for the actual workflow. It is not automatically suitable for every low-clearance warehouse shelf or for unsupported rack-to-rack attachment.
How does the rack stabilize heavy 12mm sheets?
Stability comes from the sheet path and the parking method working together. In the 13532 configuration, the slot layout is planned for 12mm glass, with each sheet separated by a steel-wire divider protected by a PVB sleeve. That sleeve keeps the glass from contacting a bare metal divider. The sheet leans into the protected backrest while its lower edge is located in the assigned support position. When operators sort or stage sheets, the foot-pedal top bar is engaged so the rack is mechanically lifted and locked instead of relying only on a caster brake. This is important for a heavy load: the lock is intended to transfer the rack into a stable parked condition before manual handling. It does not replace safe glass-handling procedures, floor verification, or a project-specific load review.
How do you calculate the four-rack combination?
Start with the verified sheet count per unit, then multiply by the number of units: 25 sheets per rack × 4 racks = 100 sheets. The glass quantity is therefore easy to communicate to production and purchasing. The load number must be handled separately. Project 13532 records approximately 2,500kg for the four-rack glass load, but the allowable operating load is not obtained by simply multiplying a generic catalog number. Review glass dimensions, thickness tolerance, weight distribution, slot spacing, base type, floor condition, movement frequency, and whether the units are moved loaded or only accessed while parked. The four racks should be coordinated as one layout, while each rack remains an independently reviewed support and locking unit.
What to confirm before converting the shelf base
- Measure the clear bay, not only the nominal shelf size: verify the 650 × 2400 × 1900 mm unit envelope, access route, overhead clearance, and separation from posts or braces.
- Define the 12mm loading pattern: confirm sheet dimensions, edge condition, slot spacing, PVB-sleeved divider arrangement, protected backrest, and whether a full slotted base is needed for short or irregular pieces.
- Separate capacity math from load approval: 25 × 4 gives 100 sheet positions, while the approximately 2,500kg project load and final combination must be checked against the drawing and floor conditions.
- Define the work sequence: use the numbered slots for single-sheet picking, engage the foot-operated top lock before handling, and confirm that the static shelf remains a storage structure rather than an unverified anchor for the mobile racks.