## 5 Handling Activities of Large Cargo Containers by Reach Stacker
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Sequence** & & \multicolumn{3}{c}{**Duration (s)**} \\
**Number of** & **Description of Elementary Activity** & **Operation No. 2** & **Operation No. 3** & **Operation No. 4** \\ \cline{3-5}
**Activities** & **(Round** & **(Average/Min./ Max/Stand. & **(Round** & **(Average/Min./ Max/Stand. & **(Average/Min./ Max/Stand. & **(Average/Min./ Max/Stand. & **(Average/Min. Max/Stand. & **(Average/Min. Max/Stand. & **(Dev. Value)** \\ \hline \multirow{4}{*}{**1**} & Straight passing of a reach stacker with a velocity of 5 km/h and a distance of 6 m. & 5 & 5.025/ 4.288/ 5.104/ 4.217/ 5.891/ 0.456 & 5 & 4.973/ 4.094/ 5.785/ 0.4 \\  & Stoppage of a vehicle at a distance of about 1 m from a designated storage area sector. & & & \\ \hline \multirow{4}{*}{2 & Setting aside a large cargo container on a place indicated by a dispatcher. Change of an angle of the reach stacker arm, adjustment of the position of the container in a storage sector, unlocking the clutch pivots in the corner fittings of a container. Lifting of a clutch at a height of around 0.5 m over the load unit. Moving back of a stacker at a 6 m distance. Change of an angle of a reach stacker arm so that transportation would be possible. & & \\ \cline{3-5}
**3** & **Lowering of a clutching device on an upper part of a container, taking into account the time for the pivots arrangement and fitting them to fastening corners and the time for the pivots to lock. & & \\ \cline{3-5}
**5** & **Raising of an intermodal transport unit from a tractor-trailer and lifting it on a height of 1 m. Moving back of a reach stacker to a tractor-trailer with a velocity of 5 km/h and a distance of 5 m. & & \\ \cline{3-5}
**6** & **Departure of a reach stacker from a tractor-trailer with a velocity of 10 km/h and a distance of 25 m. & & & \\ \cline{3-5}
**7** & **Departure of a reach stacker from a tractor-trailer with a velocity of 10 km/h and a distance of 25 m. & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Description of the elementary activities, which are part of Operations Nos. 2–4. Source: own work. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Sequence** & & \multicolumn{3}{c}{**Duration (s)**} \\
**Number of** & **Description of Elementary Activity** & **(Round Average Value)** & **(Average/Minimum  
Analyses were made for 3 different heights of type A containers: 1A, 1 AA, 1 AAA, and then the average values of the duration of the transport operations and processes were obtained. The values obtained and presented in the paper are the average values of the duration of individual operations. They were expressed in seconds, after rounding their decimals, hundreds, thousands to integers. In Tables 1-3, each time in the last column, the average values, minimum values, maximum values and standard deviation values are given in the order indicated, separated by slashes, without rounding the values to full seconds. Based on the analysis of the durations of simple operations, the duration of the transportation cycle, that is to say of taking a large type A container from a tractor-trailer by a reach stacker and setting it aside in a prescribed storage area (including storing in subsequent layers), was developed. The steps describing the cycle are given below, and their duration are presented in Table 3, while their figural identification is presented in Figure 5.  
The transportation cycle, which includes raising a large type A container from a tractor-trailer by a reach stacker and setting it aside in a prescribed storage area (as shown in Figure 5.), can be described as the following set of steps:  
**Step No. 1. ** Passing of the reach stacker (RS) into a dedicated cargo service place designated by an intermodal freight terminal dispatcher. Stoppage of a reach stacker perpendicularly to lanes for road vehicles (and to a cargo storage area) at a distance that guarantees a collision-free preparation to carry out a transhipment. Preparation to take a type A container from a semi-trailer.