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3xDa i Sjösa och Vagnhärad, 1985-86, 2 bilder. (Fordon: allmänt)

av Christer Fredriksson, Thursday, November 19, 2020, 15:10 (1646 dagar sedan) @ Anders.k.

Man måste ta hänsyn till gråbergets/makadammens hållfasthet, dvs hur lätt stenarna mals sönder vid belastning och gnidning mot varandra.

T.ex. Ställbergs makadam var hård och stod emot belastning och därmed begärlig.

Grängesberg och de flest Bergslagsgruvornas makadam var för mjuk och spröd och lämpade sig ej. Därav att TGOJ-linjer var tvungna att byta ut makadammen och sålla bort alla mindre partiklar mycket snart för att fukten ej skulle stanna kvar i bankroppen.

Hela tråden:

 

Time: 272
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE pid = 0 AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0) AND category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27)

Time: 1150
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE (mlf2_akismet_rating.spam = 1 OR mlf2_b8_rating.spam = 1)
Time: 1416
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27) AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0)

Total time: 2864

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