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Dontho la Chiyembekezo - Mchenga ndi Miyala

Pezani Mchenga ndi Miyal

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Gawo B: Pezani Mchenga ndi Miyala

Kusankha ndi kukonza mchenga wosefera ndi miyala ndikofunikira kwambiri pakuwongolera bwino kwa sefa ya ya Zosefera Mchenga Zachilengedwe (ZMZ). Ngakhale sizovuta, masitepe pokonzekera mchenga wosefera ayenera kutsatiridwa ndendende monga momwe akuwonetsedwera. Kusasankhidwa bwino ndi kukonza mchenga wosefera kungayambitse kusagwira bwino ntchito komanso ntchito yochulukirapo yokonza vutoli.

1. Ndikufuna mchenga wamtundu wanji?

2. Kodi ndingapeze kuti mchenga?

#1 MWALA WOPHWANYIDWA

Mchenga ndi miyala yochokera ku makina ophwanya miyala imatchedwa rocked rock. Mwala wophwanyidwa uli ndi chisakanizo chabwino cha tirigu makulidwe, omwe ndi ofunikira kuti fyuluta igwire bwino ntchito. Komanso sichingaipitsidwe ndi tizilombo toyambitsa matenda kapena zinthu zachilengedwe.

Mwala wophwanyidwa ndiye mchenga wabwino kwambiri ndi miyala yomwe mungagwiritse ntchito mkati mwa fyuluta. Mukhozanso kugwiritsa ntchito konkriti.

#2 MCHENGA WA DZENJE

#3. MTSINJE

Mchenga ndi miyala ya mumtsinje sizoyera. Ali ndi dothi, masamba ndi ndodo, ndi tizilombo toyambitsa matenda mwa iwo. Ngati mumagwiritsa ntchito mchenga wa m'mitsinje, pamafunika ntchito yambiri kuti muyeretsedwe.

Mutha kugwiritsa ntchito mchenga wamtsinje kupanga chidebe chosefera konkire. Mchenga wa mtsinje suli mchenga wabwino mkati mwa fyuluta.

Mwala wophwanyidwa umapanga mchenga wabwino kwambiri wosefera.

Zingakhale zovuta kupeza ndipo zingakhale zodula kuposa mchenga wamtsinje. Koma muyenera kugwiritsa ntchito mwala wophwanyika! Ngati mwala wophwanyidwa ndi wokwera mtengo kwambiri, gulani mwala wophwanyidwa kuti mugwiritse ntchito popanga mchenga ndi miyala mkati mwa fyuluta. Mutha kugula mchenga wa mtsinje ndi miyala yomanga kuti mupange chidebe chosefera konkire.

Zinthu Zoyenera Kuyang'ana Posankha Mchenga Mkati mwa Fyuluta.

Mukatola mchenga wochuluka, muyenera kumva kuuma kwa njerezo.

• Muzitha kuona bwino mbewu iliyonse, ndipo njerezo zikhale zosiyana kukula ndi mawonekedwe.
• Mukafinya mchenga wowuma wodzaza dzanja kenaka n’kutsegula dzanja lanu, mchengawo utuluke bwinobwino m’manja mwanu.
• Ngati mukugula mchenga wosakanizidwa ndi miyala, ukhale ndi miyala yambiri mpaka 12 mm (½”) m'mimba mwake.
• Isakhale ndi zinthu zakuthupi (monga masamba, udzu, ndodo, loam, dothi).
• Isakhale ndi tizilombo toyambitsa matenda.
• Isakhale yochokera kudera lomwe lagwiritsidwa ntchito kwambiri ndi anthu kapena nyama.
• Usakhale mchenga wabwino kwambiri kapena mchenga womwe nthawi zambiri umakhala dongo komanso dongo.
• Mukafinya mchenga wowuma wodzaza dzanja, usamapunduke m'manja mwanu kapena kumamatira m'manja mwanu. Ngati itero, mwina ili ndi dothi lambiri kapena dongo.
• Isakhale ndi miyala yokulirapo kuposa 12 mm (½”). Mwala uliwonse wokulirapo kuposa 12 mm (½”) ndiwowonongeka ndipo sungagwiritsidwe ntchito mkati mwa fyuluta kapena mu konkire.

Yanikani mchenga ndi miyala

Mchenga ndi miyala ikaperekedwa, muyenera kuumitsa ndikusunga mpaka mutakonzekera kusefa.

• Ngati mchenga uli wonyowa, uume. • Pandani mchenga woonda kwambiri pa nsanja kapena tebulo lomwe lili pamwamba pa nthaka. Tembenuzani ndi fosholo nthawi zina kuti zonse ziume kwambiri.

• Samalani kuti mchenga usadetse. Dothi ndi masamba zimatha kuwulukira mumchenga pamene ukuuma. • Sungani mchenga wouma pomwe uzikhala wouma komanso waukhondo.

Kabuku:

DAWUNILODI Chikalata Chamaphunziro #6 Gawo B: Pezani Mchenga ndi Miyala

Optional: Download Handbook #6 ' Find Sand and Gravel' English Educational Handout

Phunzirani momwe mungachitire Sefani Mchenga ndi Mwala

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