Cov lus teeb tseg lej ntawm qhov loj ntawm cov neeg hlaim, hlaim hlwb, I-beam...

Lus teeb tseg qhov loj ntawm rebar

Sij hawm: kab uas tuaj saum npoo × kab uas tuaj saum npoo × 0.00617 × dav ntawm m

Piv txwv: Rebar Φ20mm (kab uas tuaj saum npoo) × 12m (dav)

Kev lej: 20 × 20 × 0.00617 × 12 = 29.616kg

Lus teeb tseg qhov loj ntawm hlau hlau

Sij hawm: (diameter ntim × thickness ntawm hlau hlau) × 0.02466 × dav ntawm m

Piv txwv: hlau hlau 114mm (diameter ntim) × 4mm (thickness) × 6m (dav)

Kev lej: (114-4) × 4 × 0.02466 × 6 = 65.102kg

Lus teeb tseg qhov loj ntawm hlau hlau

Kev nyiaj formula: kab nte ntawm sab (mm) × thickness (mm) × dav (m) × 0.00785

Piv txwv: flat steel 50mm (kab nte ntawm sab) × 5.0mm (thickness) × 6m (dav)

Kev nyiaj: 50 × 5 × 6 × 0.00785 = 11.7.75 (kg)

Formula rau kev nyiaj hauv kab lus

Formula: 7.85 × dav (m) × kab nte (m) × thickness (mm)

Piv txwv: kab lus 6m (dav) × 1.51m (kab nte) × 9.75mm (thickness)

Kev nyiaj: 7.85×6×1.51×9.75=693.43kg

Formula rau kev nyiaj ntawm lub kaum hlua

Formula: kab nte sab mm × thickness × 0.015 × dav m (kev nyiaj rough)

Piv txwv: Lub kaum 50mm × 50mm × 5 zoo li × 6m (dav)

Kev nyiab qhov: 50 × 5 × 0.015 × 6 = 22.5kg (qauv rau 22.62)

Sau kab ntsaws kab rov ntsaws

Nyiaj Formula: (nruab ntej + nruab ntej) × zoo li cas × 0.0076 × yam ntev m (kev nyiab qhov rough)

Piv txwv: Kab 100mm × 80mm × 8 zoo li cas × 6m (yam ntev)

Kev nyiab qhov: (100 + 80) × 8 × 0.0076 × 6 = 65.67kg (Qauv 65.676)