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Silva Fennica 1926-1997
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Acta Forestalia Fennica
1953-1968
1933-1952
1913-1932

Articles containing the keyword 'havusahatavara'.

Category: Article

article id 7184, category Article
Bror-Anton Granvik. (1967). Havusahatavaran valmistus kenttäpyörösahalla : työtieteellinen tutkimus. Acta Forestalia Fennica vol. 84 no. 3 article id 7184. https://doi.org/10.14214/aff.7184
English title: The preparation of coniferous sawn goods using circular saws. A work study.

The objectives of the paper were to find out structure of the sawing time when using field circular saws, influence of the different factors on the sawing time and its structure, average sawing time per unit of raw material and sawn goods, and the fundamentals for the creation of an equitable system for the determination of the basis of payment in sawing work. The observations of the time study were made on both a single log and a work period basis. The material was collected using four saws of different brands.

The results showed that the season when the work was done, and top diameter of the logs to be sawn affected the constant times included in the total sawing time and the time used for sawing of center pieces. While the tree species did not affect the constant times, the grade of the logs of different tree species did have effect, especially in winter sawing. The factors affecting the different phases of the work are described in detail. The length of sawing time was longer in the winter than in the summer. The preparatory jobs in sawing required in average 82 cmin per log, and the time increased with increasing top diameter. The actual sawing is the most time-consuming part of the work, it took in average 132 cmin. 

The PDF includes a summary in English.

  • Granvik, ORCID ID:E-mail:
article id 7484, category Article
Seppo Ervasti. (1959). Suomen havusahatavaranmyynnin kausi- ja suhdannevaihteluista vuosina 1951-1958. Acta Forestalia Fennica vol. 68 no. 2 article id 7484. https://doi.org/10.14214/aff.7484
English title: On the seasonal and business cycle fluctuations of Finnish sawn softwood sales in 1951-1958.

The investigation examines export sales of Finnish sawn softwood sales in 1951-1958, concentrating on the volume of the sales. The material was collected from the archives of Finnish Sawmill Owner’s Association and the Finnish Sawmill Control Organization and the annual reports of the former. Correlation analysis was used in assessing the interdependence of the monthly sales volume and the price, and opening sales and the total sales volume of the year.

A slightly negative correlation was seen between the sale price and the monthly sales volume. Goods sold at under average prices are more abundant than goods sold at over average prices. Generally, with a rising price trend, the annual sales volume increased, but with falling prices the situation was reverse. The sales volume has been dependent on the business cycle development of prices. There was positive correlation between the opening sales and the total sales quantity for the year. The sales volume was at its maximum in the period between November and January, and at the minimum between March and September.

The time of the sales made to different countries differed little judged by quarterly statistics. It seems that the major shippers have generally concluded opening sales first. Northern Finnish shippers and the small shippers of Southern Finland have sold proportionately least during the last quarter. In general, the poorer the qualities in question the smaller on an average the proportion of opening sales but the greater the share of clearance sales.

The PDF includes a summary in English.

  • Ervasti, ORCID ID:E-mail:
article id 7480, category Article
Seppo Ervasti. (1958). Suomesta myydyn havusahatavaran hintasuhteiden muutokset vuosina 1932-38 ja 1951-56. Acta Forestalia Fennica vol. 67 no. 6 article id 7480. https://doi.org/10.14214/aff.7480
English title: Changes in the price ratios of sawn softwood sold by Finland in 1932-38 and 1951-56.

The aim of the investigation was to estimate the changes in the price ratios of different tree species of sawn timber, timber sizes and qualities, the ratios of the prices obtained by different shippers and from different countries, and their changes, especially the trends and business cycles. The data can be utilized in the organization of sawing and the drawing up of the price scales. The price ratios were calculated by taking 100 as the basic quantity and calculating the values for the other quantities accordingly, the values are called price indices. The data is collected from the sales reports in the archives of the Finnish Sawmill Owners’ Association.

Comparing the ratios of the basic prices, the prices of unsorted pine goods by shipper B (the leading marks of Northern Finland), were considerably higher than the others. The North Finnish pine goods are of the best quality in Finland. The price differences between the other shippers were small. The prices of unsorted spruce goods differed very little with different shippers. In some years the basic prices obtained for pine from different countries showed considerable differences although, in the overall view, the differences were small.

In the leading marks of Northern Finland, the differences between pine and spruce prices was greater than the other price differences. The quality of pine logs in Northern Finland is extremely high. During the periods of prosperity, the price difference between pine and spruce was relatively smaller than during depression. With spruce goods, the relative price difference for the qualities is smaller than with pine goods. For the both species the relative price differences diminished with the increase in the basic price. In the broadest sizes of unsorted pine goods, the price difference of the inch class is much bigger than in the small sizes. This is true especially for boards. The relative price difference between boards and battens increased distinctly with the advance in the basic price. A similar, though not as clear change took place in the price ratio of board and 7” sizes. The price differences between battens and boards are much smaller for spruce than for pine. The trends of the price indices of the different sizes show from the middle of 1920s and as far as the 9” u/s pine sizes very gentle, and in regards of the corresponding spruce sizes, a fairly sharp rising tendency.

The PDF includes a summary in English.

  • Ervasti, ORCID ID:E-mail:
article id 7462, category Article
Seppo Ervasti. (1955). Suomesta Pohjanmeren maihin vuosina 1920-1952 viety havusahatavara : koostumuksen muutokset. Acta Forestalia Fennica vol. 64 no. 2 article id 7462. https://doi.org/10.14214/aff.7462
English title: Export of sawn softwood from Finland to the North Sea Countries in 1920-1952.

The objective of the investigation was to study the trends and fluctuations in the composition of sawn goods, changes due to business cycles, and casual fluctuations. The subject is confined to sawn softwood export to Great Britain, the Netherlands, Belgium and France (The North Sea countries) in 1920-1952. The data was based mainly on statistics of the Board of Customs, Series of Foreign Trade, Finnish Sawmill Owner’s Association and the Finnish Official Statistics.

The North Sea countries took 75-85% of the sawn softwood exported from Finland before World War II, and 50-70% of the quantity exported since the war. Sawn softwood export from Finland is almost exclusively long and small-dimension timber. The composition of the export from Finland to the North Sea countries was defined already during the 1900th century, and no big chances were observed even during the period of 1920-1952. The only definite trend was decrease in the proportion of u/s grade.

The PDF includes a summary in English.

  • Ervasti, ORCID ID:E-mail:
article id 7448, category Article
Viljo Holopainen. (1954). Suomen havusahatavaran viennin kausimaisuus. Acta Forestalia Fennica vol. 61 no. 36 article id 7448. https://doi.org/10.14214/aff.7448
English title: The seasonal fluctuations in the Finnish exports of sawn softwood.

The purpose of the investigation was to examine the seasonal pattern in Finnish export shipments and export sales of sawn softwood in 1927-1953. Statistics concerning shipments have been obtained from the Board of Customs, and material relating to sales has been provided by the Finnish Sawmill Owner’s Association (now Finnish Sawmills Association). On the basis of original monthly statistics, 13-month moving averages were computed. Finally, a seasonal index was calculated.

According to the results, the export shipments have a fairly apparent seasonal pattern with very low figures from January to April, a peak from June to August, and thereafter a gradual decline up to the end of the year. There are also considerable variations from year to year but in general the exports follow this rhythm. In contrast to export shipments the seasonal pattern of export sales is characterised by significant irregularity. Market developments and speculation play a far greater role than the seasonal factors. Indeed, a seasonal character in export sales can scarcely be discerned.

The Acta Forestalia Fennica issue 61 was published in honour of professor Eino Saari’s 60th birthday.

The PDF includes a summary in English.

  • Holopainen, ORCID ID:E-mail:

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