EN 
DE 
RU 
FR 
PT 
ES 
IT 
JA 
STONE SLAB STORAGE | GRANITE & MARBLE YARDS
Flat-stacked granite and marble can turn a storage area into an edge-damage and contamination risk. A correctly specified upright L-frame stone slab rack separates slabs from hard steel, keeps the load against a controlled support angle, and uses a counterweighted base to resist forward tipping.
For a stone processor or wholesaler, the search term stone slab rack usually starts with a practical problem: slabs are lying flat in floor stacks, or leaning against an old steel frame that sheds rust and creates hard contact at the edge. Flat storage consumes aisle space and makes the lower slabs difficult to reach. An unprotected upright frame can create a different failure mode—localized pressure, chipped corners, staining, and uncontrolled movement during handling.
Grack is a reusable, single-sided L-frame storage and transport rack that can be configured for sheet materials such as granite and marble. The useful design is not simply “vertical storage.” It is the combination of a controlled lean, a separated contact surface, a stable base, and handling interfaces that match the plant. The correct model still depends on slab weight, dimensions, center of gravity, forklift geometry, and whether the rack stays indoors or moves outdoors.
Why store stone slabs upright instead of in floor stacks?
Vertical insertion makes each slab addressable rather than buried in a horizontal pile. In a fabrication yard, that can shorten selection and loading movements, improve warehouse glass organization principles for stone, and leave a clearer route for forklifts. The L-frame places the slab against a designed support face at a typical loaded angle of about 85°–87°, rather than asking operators to improvise a lean against a wall. The back support and base work together so the slab’s weight is carried into the rack instead of into a narrow, unstable edge contact. This is also why an upright rack is not automatically suitable for every yard: cracked slabs, unstable ground, unknown slab weights, or a lifting method that cannot control the load require a separate engineering and handling review.
How do felt pads or EPDM prevent edge chipping?
Stone does not need a sharp steel edge pressing against a polished or freshly cut surface. A felt liner, or an EPDM/PU protective profile where the project calls for higher abrasion and moisture resistance, creates a compliant contact layer. It spreads point pressure, separates the slab from bare steel, and reduces sliding and impact at the loading rail. The liner should be continuous at the actual support zones, clean before loading, and replaced when cut or contaminated. For Grack configurations that use rubber, the protective strip can be mechanically fixed with screws and an internal steel plate rather than relying only on adhesive. That matters in yards exposed to vibration, heat, dust, and moisture because a peeling glued strip can become a new hard edge. The 15742 stone-oriented reference is a specific configuration for 4×8-foot panels and does not require rubber strips; liner choice is therefore a model and contact-detail decision, not a universal promise.
How does the counterweight resist forward tipping?
An L-frame carries a tall, heavy slab load above its base, so stability depends on the complete load path—not just the upright tube. The extended base, back support, welded load-bearing joints, and counterweight move the combined center of gravity back toward the support footprint. The result is a more controlled reaction when slabs are inserted, removed, or moved by forklift. The counterweight is not permission to exceed the selected rack’s rating or to use it on a sloped, damaged, or unverified floor. Capacity is model-specific: for example, the 15742 reference is 2400 × 750 × 1200 mm, rated for 1,000 kg, with a listed self-weight of 112 kg, and intended for 4×8-foot panels. Those figures must not be transferred to another Grack model. Forklift entry, fork width, aisle clearance, and any retaining bar or tie-down requirement should be confirmed before production.
What to specify for a 4×8-foot slab rack?
- Panel envelope: confirm the 4×8-foot panel size, actual thickness range, edge condition, and the required storage width. The 15742 reference is a project-specific 2400 mm long rack; a stated 600 mm storage width must be confirmed against the chosen drawing and contact layout.
- Load rating: size the rack from the real slab mix and handling condition. Use the selected model’s rated capacity—do not apply 1,000 kg or any other snapshot as a standard Grack rating.
- Contact protection: choose felt, EPDM, or another approved profile by surface finish, moisture, dust, and replacement requirements. The 15742 reference remains a no-rubber-strip configuration.
- Site and handling: confirm level floor conditions, adjustable forklift-lane center distance, pallet-jack access where needed, and whether outdoor service justifies optional hot-dip galvanizing. Galvanizing is a project option, not an automatic feature of every powder-coated rack.