Chưa có sản phẩm trong giỏ hàng.
Số gạch hao hụt (hay tỉ lệ hao hụt) là phần trăm số gạch dự kiến bị vỡ, hư hỏng hoặc không sử dụng được trong quá trình thi công xây dựng. Đây là một yếu tố quan trọng cần tính toán khi mua gạch để đảm bảo đủ số lượng cho công trình.
Nguyên nhân dẫn đến hao hụt gạch:
Vận chuyển: Gạch có thể bị vỡ, sứt mẻ trong quá trình vận chuyển từ nhà máy đến công trình.
Thi công:
Cắt gạch: Khi cần điều chỉnh kích thước gạch cho phù hợp với các góc cạnh, vị trí đặc biệt của bức tường, sẽ có một phần gạch bị cắt bỏ và không sử dụng được.
Rơi vỡ: Trong quá trình xây dựng, gạch có thể bị rơi vỡ do va đập.
Lỗi kỹ thuật: Tay nghề thợ thi công kém có thể dẫn đến việc sử dụng gạch không hiệu quả, gây lãng phí.
Lưu trữ: Gạch nếu không được bảo quản tốt có thể bị hư hỏng do thời tiết, ẩm mốc.
Tỉ lệ hao hụt thường được tính theo phần trăm (%) và phụ thuộc vào:
Loại gạch: Gạch đặc thường ít bị vỡ hơn gạch lỗ. Gạch kích thước nhỏ thường có tỉ lệ hao hụt cao hơn do phải cắt nhiều.
Chất lượng gạch: Gạch chất lượng kém dễ bị vỡ hơn.
Kỹ thuật thi công: Thợ thi công lành nghề sẽ hạn chế được hao hụt.
Độ phức tạp của công trình: Tường có nhiều góc cạnh, cửa sổ, cửa ra vào sẽ cần cắt gạch nhiều hơn, dẫn đến tỉ lệ hao hụt cao hơn.
Ví dụ:
Nếu bạn tính toán cần 1000 viên gạch cho công trình và tỉ lệ hao hụt dự kiến là 5%, thì số gạch hao hụt sẽ là: 1000 * 5 / 100 = 50 viên.
Vậy tổng số gạch cần mua sẽ là: 1000 + 50 = 1050 viên.
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