Študija časa arborista obžagovalca pri izvedbi negovalnih del na drevesih ostrolistnega javorja (Acer platanoides)

Nagode, Matej (author), Mihelič, Matevž (mentor)

V diplomskem delu smo s časovno študijo analizirali delovni proces arborista obžagovalca pri negovalnih delih na drevesih ostrolistnega javorja, kjer je obžagovalec uporabil tehniko z dvižno košaro. V vzorec je bilo vključenih 51 dreves, ki so na Poti spominov in tovarištva. Časovna študija je potekala konec februarja, od 20. 2. 2023 do 23. 2. 2023. V celoti smo vključili 19 ur in 59 minut delovnega časa; od tega je bilo neproduktivnega časa 3 ure in 47 minut, kar predstavlja 18,8 % celotnega zajetega časa, produktivnega časa 16 ur in 12 minut, kar predstavlja 81,2 % celotnega zajetega časa ter od tega glavnega produktivnega časa 8 ur in 41 minut, kar predstavlja 43,4 % celotnega zajetega časa, pomožnega produktivnega časa pa za 7 ur in 31 minut, kar predstavlja 37,6 % celotnega časa. Analizirali smo porabljen čas negovanja v odvisnosti od prsnega premera, višine, števila vrhov in volumna krošnje. Ugotovili smo, da smo za najmanjši premer 6 cm izmerili čas 9,8 minute, pri največjem, ki znaša 41 cm, pa 62,80 minute. Z večanjem prsnega premera za 10 cm se porabljeni čas na drevo povečuje za 9,0 minute. Pri povprečnem prsnem premeru 21,8 cm je čas izvajanja del na enem drevesu znašal 23,4 minute. Za najmanjšo višino 4,29 m smo izmerili čas 25,3 minute, pri najvišjem, ki je visok 16,24 m, pa 51,6 minut. S povečanjem višine za 1 m se porabljen čas na drevo povečuje za 3 minute. Za povprečno visoko drevo 8,3 m je obžagovalec potreboval 23,4 minute. Za drevesa z enim vrhom smo izmerili čas med 6 in 17 minut, za tiste s 4-6 vrhovi pa med 26 in 63 minut. Pri volumnih do 100 m3 je obrezovanje v povprečju trajalo 13,51 minut, pri volumnih med 400 in 1000 m3 pa 35,9 minute. Pri povprečnem volumnu 177,21 m3 traja obrezovanje 23,4 minute.

• Language: Slovenian
• Keywords: arboristika, časovna študija, tehnika z dvižno košaro
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [M. Nagode]
• Year: 2023
• PID: 20.500.12556/RUL-150495
• UDC: 630*3+630*2(043.2)=163.6
• COBISS.SI-ID: 165662979
• Publication date in RUL: 20.09.2023

Secondary language

• Language: English
• Title: Time study of arborist tree worker conducting tending work on Acer platanoides trees

Abstract

In the bachelor’s thesis, we analyzed the work process of the arborist sawyer during the maintenance work on sharp-leaf maple trees where the sawyer used the lifting basket technique. The sample included 51 trees located on the Pot Spominov in Tovarištva. The time study took place at the end of February, from 20/02/2023 to 23/02/2023. In total, we covered 19 hours and 59 minutes of working time of which 3 hours and 47 minutes were unproductive, which represents 18.8 % of the total time covered, productive time of 16 hours and 12 minutes, which represents 81.2% of the total time covered, and of this, the main productive time 8 hours and 41 minutes, which represents 43.4% of the total time covered, and the auxiliary productive time for 7 hours and 31 minutes, which is 37.6% of the total time. We analyzed the grooming time depending on the diameter of a tree, height, number of peaks, and crown volume. We found out that 9.8 minutes were spent on the smallest diameter of 6 cm, and 62.80 minutes on the largest, which is 41 cm. By increasing the diameter by 10 cm, the time spent per tree increases by 9.0 minutes. With an average diameter of 21.8 cm, the time spent working on one tree was 23.4 minutes. For the smallest height of 4.29 m, we measured 25.3 minutes, and for the highest, which is 16.24 m, it took 51.6 minutes. By increasing the height by 1 m, the time spent per tree increases by 3 minutes. For an average high tree of 8.3 m, the sawyer needed 23.4 minutes. We measured the time between 6 and 17 minutes for trees with one peak, and between 26 and 63 minutes for those with 4-6 peaks. For volumes up to 100 m3, trimming took an average of 13.51 minutes, and for volumes between 400 and 1000 m3, it took 35.9 minutes. With an average volume of 177.21 m3, trimming takes 23.4 minutes.

• Keywords: arboriculture, time study, aerial work platform