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This involves booking time slots for loading and offloading at available loading docks in a flexible and transparent manner. Often an online access for third parties like freight forwarders and drivers is included to update availability or booked slots in line with market or traffic dynamics. Learn more about loading dock scheduling with AEB. BLUE GIANT Loading Dock System Guide Page 2 Issue Date: 07/15/05, Rev. 2 (Part #038-588E) OVERVIEW and door sizes, and when selecting the proper loading dock equipment. The loading dock personnel must then be educated and trained on how to use the. This wager free spins bonus is open to new Piggy Bang Casino customers only. A minimum deposit of $/€20 Crown Casino Loading Dock 2 is required. One free spin will be awarded for every $/€1 deposited with a maximum Crown Casino Loading Dock 2 of 55 free spins available. Spins available to play in Book of Dead. Begin planning inbound or outbound loads within those constraints and communicate it to carriers. Slot incoming/outgoing shipments into the 60 minute time slots on the dock schedule. Communicate those pickup/delivery times with carriers. Enforce the rules and PDCA.

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Built to Rite-Hite’s high standards for quality, Classic Seals offer traditional benefits with a range of options to increase durability and sealing effectiveness.

Features (Classic seal with traditional header)

  • Rugged ArmorPleat™ protection – Available on full length of side pads, ArmorPleats provide additional abrasion protection to extend the life of the dock seal. Available in high-strength, friction-resistant Durathon® fabric.
  • Head Pad Model: Traditional head pad – Foam compression head pad seals directly against trailer. Corner wear pleats provide added reinforcement.
  • Head Curtain Model: Adjustable head curtain – Pull-rope activation allows flexibility to manually adjust seal to varying trailer heights to ensure most effective coverage. Corner wear pleats provide added reinforcement.
  • Available Firefighter® header protection* – Optional Firefighter system prevents head pad from burning due to the heat buildup of compressed trailer marker lights.

Features (Classic seal with High Performance header)

  • Rugged ArmorPleat™ protection – Available on full length of side pads, ArmorPleats provide additional abrasion protection to extend the life of the dock seal. Available in high-strength, friction-resistant Durathon® fabric.
  • Triple-reinforced corner wear boots* – Multiple layers under outer Durathon friction-resistant fabric fortify corners, where earliest and most severe damage typically occurs.
  • Replaceable wear components* – Corner wear boots and head curtain face are attached with Velcro and are quickly and easily replaced, if needed, for simple, low-cost maintenance or upgrades.
  • Internal Firefighter® technology* – Triple-layer foil heat-dissipation system in header prevents burning from the heat build-up of compressed trailer marker lights.
  • Light-blocking header face* – Mini pleats close gaps caused by seal-breaking protrusions on backs of trailers.
  • Head Pad Model: Anti-sag head pad construction* – Backerless head pad with internal stabilizing panel adapts to trailer movement, preventing foam from sagging over time after repeated trailer impact and bouncing motion.
  • Head Pad Model: Head pad pop-off protection* – Unique mounting allows head pad to pivot upwards freely, preventing it from becoming pried off the wall by trailers when yard jockeys are in use.
  • Head Curtain Model: Impactable header frame* – Flexible framing resists damage if struck by trailer coming in too high.
  • Head Curtain Model: Head curtain stability system* – Self-locking design improves sealing integrity at trailer top and eliminates the need for wind straps. Prevents curtain from blowing in wind and losing contact with trailer.
  • Available PitMaster™ 4th-side sealing system* – Gaps beneath and around dock leveler and bumpers are sealed with optional PitMaster components, providing energy savings, improving cleanliness and helping pass inspections.

* Exclusive Rite-Hite feature

improving industrial safety, security and productivity worldwideTHROUGH QUALITY AND INNOVATION

To design efficient loading docks, determine the:

  • Types and numbers of trucks that will use the docks
  • Dimensions of the loading docks and doors
  • Characteristics of the facility processes

Then, consider the dock height, loading bay width, and dimensions and layout of the building interior.

Truck Specifications

Determine the types and dimensions of the trucks that will use the docks. List each truck’s length, width, height and bed height.

See Figure 21 through Figure 26 for the dimensions of common truck and trailer designs. Note that weight of freight can cause a variance of up to 6 in. in trailer and bed heights. The dimensions may also be affected by air suspension systems. Use Figure 21 through Figure 26 for preliminary design, but obtain actual truck dimensions before making final design decisions.

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Figure 22: Semitrailer

Figure 24: Refrigerated Truck

Figure 26: Flatbed Truck

Sea Containers

Sea containers and refrigerated containers can have trailers with heights of up to 62 in. Facilities that must service sea containers may also frequently service low-bed trucks. The height difference can be from 30 to 62 in. Consider designing docks of various heights or installing equipment such as hydraulic truck levelers or elevating docks. Typical container sizes are listed in Table 5.

Table 5

Underride Protection Bars

The underride protection bar, called the Rear Impact Guard (RIG) bar, is mounted at the rear of the trailer (Figure 27). Restraint devices attach to the RIG bar to prevent the truck from being driven away before loading or unloading is complete.

Set the Dock Height

The most important characteristic of the loading dock design is the height of the dock. The dock height must match the height of the docking trucks. The height difference between the dock and the trailer bed should be as small as possible. The dock leveler bridges some height difference, but the incline should not be too steep. A steep incline can cause insufficient forklift underclearance, and it increases maintenance demands on the equipment.

To determine the dock height, find the midpoint of the bed heights of the expected trucks. Most trucks require a dock height of between 46 and 52 in.

See Table 6 for dock heights that create level docks for common types of trucks.

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Table 6

NOTE: Truck beds will rise and lower during loading and unloading.

If the driveway is recessed, the dock height should be lower (Figure 28). A recessed parking area may lower the truck bed height by 6 to 10 in.

This is particularly important when a driveway approach declines to a level surface in front of the dock, and when the truck or trailer has its wheels positioned well forward of the rear of the vehicle.

For example, in Figure 29, the drive approach is an 8% decline leading to a level concrete pad at the dock. A typical trailer bed, which is at a 48 in. height (HL) from the decline drive, will be at approximately 40 in. (HD) at the dock. Therefore, if the dock is intended to service trailers with 48 in. bed height, the dock height should be at 40 in.

HL = Bed height when level
HD = Bed height at dock
Figure 29

Design the dock height based on the specific parameters of driveway slope, geometry of the recessed parking area, and bed heights of the expected trucks unique to your building.

If the expected trucks have very high or low bed heights, provide dedicated dock positions with special driveways and equipment, such as an elevating dock (Figure 30).

For open docks, where the trailer doors are commonly opened after the trailer is parked, design a dock height low enough for the door clamp hooks to clear the dock as they are opened (Figure 31). 51 in. is a common dock height for this situation. If the driveway is recessed, lower the dock height further since the doors swing down slightly as they are opened. Lower the dock by about 1 in. for each 1% of recessed driveway grade.

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Figure 31

Set the Loading Bay Widths

Each truck bay should be at least 12 ft wide to provide enough space for the trailers, which are 8’0″ to 8’6″ wide, to back squarely to the dock. To reduce congestion, design 14 ft wide bays. If swinging trailer doors will be opening or closing at the dock, the center distance should be at least 14 ft (Figure 32).

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Select Dock Doors

A dock door is required for inside/outside loading docks. The most commonly installed doors are manually operated and are either an overhead sectional door or a roller door. A sectional door is smoother and quieter than a roller door because of rollers that run inside of tracks. Other advantages of a sectional door are:

  • They are thicker and stronger than a roller door
  • They can be insulated

NOTE: Install door track protectors to protect the door tracks.

Common dock door dimensions are 8’0″ in width with 8 ft, 9 ft or 10 ft heights. Consider extending the door 13 ft to 14 ft above the driveway and a minimum of 8’6″ wide if full access to the truck’s interior is required. Dock doors dimensions are determined by:

  • Type of trucks being serviced
  • Sealing system
  • Environmental concerns

Determine Door Sizes

NOTE: The maximum trailer size limits are 8’6″ wide x 13’6″ high (varies by state). With a special permit, a flatbed may exceed the maximum width.

Widths

Determine the door sizes along with selecting the sealing system. Keep doors as small as possible – usually narrower than 8 ft – in temperature-controlled docks, where energy is lost through doors. Space the doors 12 ft apart to accommodate most trucks, sealing systems, and communication light systems.

Dock doors narrower than 8’0″ are commonly installed with compressed foam dock seals for temperature control of refrigerated operations.

9 ft wide doors should be used to service 8’6″ wide trailers. Side-by-side palletizing is simplified, potential for product damage is reduced, and oversized loads can be serviced.

The doors should be between 8’6″ and 8’0″ wide to allow for trucks to park off-center. A 10 ft wide door can be designed for oversized loads. Note that wider doors require more building space, which may not be available.

NOTE: Compression of seals may reduce the effective width and full access to trailer.

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Figure 33

Heights:

Doors are typically 8 ft, 9 ft, or 10 ft high. 8 ft high doors can accommodate many loading and unloading operations where height is not critical, but cannot accommodate floor-to-ceiling loading (Figure 35). 8 ft high doors do not maximize the usage of the available height in the trailer, which leads to higher freight costs.

Figure 35

A 9 ft high door allows for improved floor-to-ceiling loading (Figure 36) as a higher load can pass through the door. Fuller, tighter loading makes for better space utilization with a decreased risk of product damage due to door impact. The 9 ft height suits a wide range of applications. However, in trailers with lower height there may be a gap between the trailer and the top of the door. The gap can be closed off with a dock seal or shelter.

A 10 ft high door services the full range of loading and unloading operations (Figure 37). 10 ft high doors accommodate trailers of heights up to and including high cube trailers and high cube sea containers.

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Figure 37

To provide full access to the entire width and height of a full-size trailer, the dock door should extend the full height of the trailer (13 to 14 ft) above the parking area.

Design the Dock Interior

Design a forklift traffic aisle, 15 ft wide minimum, behind the loading ramps. This aisle provides better visibility, allows forklifts to maneuver behind the trailers, and permits two-way traffic parallel to the dock face. Aisles that are 15 ft or wider allow forklift drivers to drive straight onto the docklevelers, which reduces injury hazards and equipment stress (Figure 38).

Put restrictions into place that deter forklift drivers from driving parallel to the dock face (Figure 39), which can result in collisions with forklifts backing out of trailers.

Figure 39