അവസാനമായി കണക്കു കൂട്ടൽ കർത്തവ്യങ്ങൾ പലതും നടക്കുന്നത് പരുഷമായ ഭൗതിക സാഹചര്യങ്ങളിൽ ആയിരിക്കും. അതായതു പൊടി, ചൂട്, ഈര് പ്പം, പ്രകമ്പനം എന്നിവയുള്ള സാഹചര്യങ്ങളിൽ ആയിരിക്കും.
చివరగా గణన టాస్క్స్ తరచుగా కఠినమైన ఫిజికల్ వాతావరణాలలో నిర్వహించాలి, వాతావరణము దుమ్ము, వేడి, తేమ, వైబ్రేషన్స్ మరియు అలాంటి వాటిని కలిగి ఉండాలి.