WALAKnowledge Hub
Practical supply chain and logistics learning, tools and guidance for professionals and students.
What do you need today?
I want to learn logistics
Warehouse, transport, inventory, safety, trade and useful words in small lessons.
Know equipment & facilities
Containers, trucks, warehouses, heavy lift, handling equipment and racking.
I need a quick tool
CBM, chargeable weight, storage selector and Incoterms learning support.
My shipment is stuck
Understand port delay, customs hold, demurrage, detention, yard and damage first checks.
I need Saudi links
Official Saudi logistics authorities and what each one is normally used for.
I want kids to play
Games that teach vehicles, warehouse flow, safety and logistics thinking.
I want to ask
Submit a practical question. WALA reviews first before any public answer.
Contact WALA
Email, WhatsApp, website and WALA ecosystem links.
Learn logistics in small useful lessons.
Short logistics lessons for students, customers and operations staff. Tap + to open a lesson.
When a shipment is stuck, check these items first.
Collect these details before contacting the carrier, broker, customer or your team.
Know the equipment and facilities used in logistics.
Open a category to see its uses and important checks.
Sea Containers & Air Cargo UnitsStandardised cargo units used to pack, protect and move goods by sea or air.
20 ft Dry Container
Used for: Dense general cargo. Watch: Weight distribution and payload limits.
40 ft Dry Container
Used for: Higher-volume general cargo. Watch: Space is greater, but payload is not simply double.
40 ft High-Cube
Used for: Light, bulky cargo needing extra height. Watch: Door and route clearance.
Reefer Container
Used for: Temperature-sensitive cargo. Watch: Set point, airflow, power and pre-trip inspection.
Open-Top Container
Used for: Cargo loaded from above or exceeding normal door height. Watch: Covering, lashing and out-of-gauge approval.
Flat-Rack Container
Used for: Machinery, pipes and oversized cargo. Watch: Load securing, centre of gravity and over-width/height.
Tank Container
Used for: Bulk liquids, gases or powders. Watch: Product compatibility, cleaning status and dangerous-goods controls.
Air Cargo Pallet
Used for: Freight secured under a cargo net for aircraft loading. Watch: Contour, restraint, weight and aircraft compatibility.
LD3 ULD
Used for: Lower-deck cargo and baggage on many wide-body aircraft. Watch: ULD code, condition and aircraft fit.
Main-Deck ULD
Used for: Larger air-freight loads on freighter aircraft. Watch: Door dimensions, floor loading and approved contour.
Trucks & TrailersRoad vehicles and trailers selected according to cargo size, weight, temperature and handling needs.
Delivery Van
Used for: Parcels and city distribution. Watch: Payload, cubic capacity and secure separation of cargo.
Light Truck / Dyna
Used for: Small commercial loads and local deliveries. Watch: Body type and legal payload.
Rigid Box Truck
Used for: Protected pallet and carton cargo. Watch: Internal dimensions, tail-lift need and loading access.
Curtain-Side Truck
Used for: Fast side loading of palletised goods. Watch: Curtains are weather covers, not load restraints.
Reefer Truck
Used for: Chilled or frozen distribution. Watch: Pre-cooling, temperature record and door-opening discipline.
Flatbed Trailer
Used for: Steel, machinery and cargo loaded from the side or top. Watch: Lashing, edge protection and weather exposure.
Container Chassis
Used for: Moving ISO containers by road. Watch: Twist locks, axle loading and container size compatibility.
Tanker
Used for: Bulk liquids, gases or powders. Watch: Product compatibility, compartment condition and regulatory controls.
Tipper / Dump Truck
Used for: Loose bulk materials. Watch: Ground stability and overhead clearance during tipping.
Car Carrier
Used for: Transporting vehicles. Watch: Ramp angle, vehicle securing and total loaded height.
Warehouse TypesWarehouses differ by product type, temperature, licensing and way of working.
Dry / Ambient Warehouse
Used for: General cargo not needing temperature control. Watch: Product compatibility, ventilation and pest control.
Racked Warehouse
Used for: Pallet storage at height. Watch: Rack rating, aisle width and forklift compatibility.
Shelving Warehouse
Used for: Small cartons, parts and manual picking. Watch: Shelf load limits and item identification.
Fulfilment Centre
Used for: High-volume order picking, packing and dispatch. Watch: System integration, cut-off times and returns flow.
Chilled Warehouse
Used for: Products kept above freezing at controlled temperature. Watch: Product-specific range, monitoring and door discipline.
Frozen Warehouse
Used for: Frozen food and similar products. Watch: Temperature recovery, PPE and equipment suitability.
Temperature-Controlled Warehouse
Used for: Products requiring a defined controlled range. Watch: Mapping, calibration, alarms and backup power.
Bonded / Customs Warehouse
Used for: Goods held under customs control. Watch: Licence scope, access, records and release procedures.
Dangerous-Goods Warehouse
Used for: Properly classified hazardous materials. Watch: Segregation, fire systems, SDS and regulatory approval.
Open Yard
Used for: Weather-tolerant cargo, equipment and containers. Watch: Drainage, security, surface strength and weather exposure.
Dedicated Warehouse
Used for: Used by one customer or one operation. Watch: Check the required volume, fixed cost and room to expand.
Shared Warehouse
Used for: Multiple clients sharing facility resources. Watch: Keep each customerโs stock, records and agreed services separate.
Material Handling, Warehouse & Dock EquipmentEquipment used to lift, move, load, unload and position goods safely.
Counterbalance Forklift
Used for: General pallet handling and truck loading. Watch: Rated capacity, load centre and indoor/outdoor power type.
Reach Truck
Used for: High racking in narrow indoor aisles. Watch: Floor condition, lift height and rack/aisle design.
VNA / Turret Truck
Used for: Very-narrow aisles and high-density storage. Watch: Guidance system, floor flatness and rescue planning.
Order Picker
Used for: Picking cases or pieces from elevated locations. Watch: Fall protection and approved operating zone.
Side Loader
Used for: Long materials such as timber, pipes and steel. Watch: Load balance and travel clearance.
Rough-Terrain Forklift
Used for: Outdoor yards and construction surfaces. Watch: Slope, ground stability and load visibility.
Telehandler
Used for: Reaching forward and upward on outdoor sites. Watch: Capacity falls as boom reach increases.
Manual Pallet Jack
Used for: Short moves of palletised loads on smooth floors. Watch: Rated capacity, floor slope and operator effort.
Electric Pallet Jack
Used for: Faster pallet movement over longer indoor distances. Watch: Pedestrian separation and battery condition.
Walkie Stacker
Used for: Light pallet stacking without a full forklift. Watch: Lift height, floor quality and stability.
Conveyor
Used for: Repetitive movement of cartons or totes. Watch: Guarding, pinch points and emergency stops.
Dock Leveller
Used for: Bridging the height gap between dock and truck. Watch: Vehicle restraint, rated load and safe positioning.
Mobile Dock Ramp
Used for: Forklift access where no fixed dock exists. Watch: Anchoring, slope and ground condition.
Tail Lift
Used for: Loading where a dock or forklift is unavailable. Watch: Platform rating, load stability and exclusion zone.
Stretch-Wrapping Machine
Used for: Stabilising pallet loads with stretch film. Watch: It does not correct poor stacking or replace proper restraint.
Scales, Scanners & Load Restraints
Used for: Weight control, identification and cargo securing. Watch: Calibration, data accuracy and equipment rating.
Storage Systems & RackingRacking and shelving store goods safely and make picking easier.
Selective Pallet Racking
Used for: Direct access to individual pallet locations. Watch: Rack rating, beam level, aisle width and forklift compatibility.
Double-Deep Pallet Racking
Used for: Higher storage density by placing pallets two positions deep. Watch: Special reach equipment and reduced direct access.
Drive-In Racking
Used for: High-density storage of many pallets of the same product. Watch: Forklift entry, rack protection and normally last-in, first-out flow.
Drive-Through Racking
Used for: High-density storage with entry from one side and exit from the other. Watch: Lane control, product consistency and first-in, first-out planning.
Very-Narrow-Aisle Racking
Used for: High-density selective storage using very narrow operating aisles. Watch: Floor flatness, guidance system and VNA equipment compatibility.
Mobile Pallet Racking
Used for: High-density storage by mounting racks on movable bases. Watch: Floor rails, safety controls, maintenance and access time.
Push-Back Racking
Used for: Multi-deep pallet storage on inclined carts or rails. Watch: Load compatibility, lane depth and last-in, first-out flow.
Pallet-Flow / Live Storage
Used for: First-in, first-out pallet movement using gravity rollers. Watch: Pallet quality, brake rollers and lane maintenance.
Cantilever Racking
Used for: Long items such as pipes, timber and steel sections. Watch: Arm capacity, load distribution and handling clearance.
Heavy-Duty Pallet Racking
Used for: High-load pallet storage. Watch: Engineered capacity, impact protection and inspection discipline.
Long-Span Shelving
Used for: Bulky cartons and manually handled medium-weight items. Watch: Shelf load rating and safe manual access.
Light-Duty Shelving
Used for: Small cartons, parts and manual picking. Watch: Shelf loading, labelling and ergonomic reach limits.
Multi-Tier Shelving
Used for: Manual storage and picking across multiple floor levels. Watch: Structural design, stairs, handrails, fire safety and evacuation.
Rack-Supported Mezzanine
Used for: Creating an additional working or storage level supported by the rack structure. Watch: Engineering approval, floor loading and fire protection.
Automated Storage & Retrieval System
Used for: Automated high-density storage and retrieval of pallets, cartons or totes. Watch: System integration, maintenance, controls and emergency recovery.
Specialised Transport & Heavy LiftSpecial equipment used for oversized, very heavy or difficult cargo.
Low-Bed Trailer
Used for: Tall or heavy machinery. Watch: Ground clearance, ramp angle and route restrictions.
Step-Deck / Drop-Deck
Used for: Cargo requiring more height allowance than a standard flatbed. Watch: Deck transitions and securing points.
Extendable Trailer
Used for: Long cargo such as pipes, beams or blades. Watch: Turning radius, rear overhang and escort requirements.
Hydraulic Modular Trailer
Used for: Very heavy and oversized project cargo. Watch: Axle-line configuration, hydraulic levelling and ground bearing pressure.
SPMT
Used for: Extremely heavy loads moved slowly within controlled sites. Watch: Stability calculation, steering plan and surface condition.
Ballast Tractor / Heavy Prime Mover
Used for: Pulling or pushing heavy-haul combinations. Watch: Traction, braking, gradient and combination design.
Mobile Crane
Used for: Flexible lifting at changing locations. Watch: Lift plan, outriggers, radius, wind and ground capacity.
Crawler Crane
Used for: Heavy lifts with high stability and site mobility. Watch: Assembly space, ground pressure and transport logistics.
Truck-Mounted Crane / HIAB
Used for: Delivery and self-unloading of medium loads. Watch: Stabiliser setup, lifting radius and remaining truck payload.
Gantry, Strand-Jack & Jack-and-Skid Systems
Used for: Controlled lifting or horizontal movement where cranes are unsuitable. Watch: Engineered method statement, synchronisation and structural support.
Logistics calculators and checks.
CBM calculator
Calculate total cubic meters from package dimensions.
Air chargeable weight
Compare actual gross weight with volumetric weight.
Enter dimensions, quantity and total gross kg, then calculate.
Warehouse requirement checker
Select the cargo profile to see Saudi storage licence and control checks.
Incotermsยฎ Explorer
All 11 ICC trade terms in simple educational language.
Saudi authorities and what they handle.
Learn logistics through games.
Learning through play. Complete activities to unlock the Young Logistics Explorer certificate.
Logistics terms people often confuse.
Choose a pair or move with the arrows.
What do my parents, siblings or relatives do in logistics?
See what different logistics jobs do.
Choose the right transport
Guess the logistics shape
Logistics word match
Match one logistics term with the correct meaning.
Fast logistics quiz
Logistics questions for older students and beginners.
Document control drill
Check what is missing before cargo moves, clears, ships or delivers.
What should operations do?
Choose the safest action.
Safety spotter
Find unsafe warehouse situations and learn why they matter.
Warehouse flow mission
Click the next correct step in the warehouse journey.
Truck-to-Warehouse route
Move the truck to WH without touching blocked cells.
Quick truck games.
Truck Convoy Snake
Collect loads without hitting the yard boundary or your own trailer.
Clear the Truck Yard
Tap a truck. It can leave only when nothing blocks the direction of its arrow.
Young Logistics Explorer
Complete learning activities, enter a name and print or save the certificate.
Ask WALA a logistics question.
Submit to WALA for review
For learning questions use Connect. For business service use WALA website.
Important disclosure
Use this Knowledge Hub for general learning.
Commercial quotations and service requests should be submitted through the main WALA Website at www.walalogistics.com.
This website provides general educational information only. Check important requirements with the relevant authority or qualified professional before acting. WALA and MAAYER are not responsible for decisions made only from this general information.