Floor Lamp Counterweight: Why the Base is So Heavy

An arc floor lamp with a lamp arm extending 2 meters outwards from the base and bending downwards, with the lamp head suspended in the air—this cantilever must be balanced by the weight of the base. Therefore, the base is a solid marble block, 300mm in diameter and 80mm thick, with its weight clearly visible. The edges of the stone are roughly chiseled, creating a textural contrast with the polished steel lamp arm. The lamp arm has a tapered cross-section: thicker at the root and thinner at the end, as the bending moment is borne by the root. These three elements—heavy base, tapered cross-section, long cantilever—are causally related. Side view, full shot, showing the proportions. Avoid: small base or light materials, uniform lamp arm cross-section, short cantilever distance, metal or plastic base.

Translated from Chinese by AI.

一盞弧形落地燈,燈臂從底座向外伸出 2 公尺並向下彎,燈頭懸在空中——這個懸挑必須靠底座的重量平衡,所以底座是一塊直徑 300mm、厚 80mm 的實心大理石,重量看得出來。石材的邊緣做粗獷的鑿面,與拋光的鋼製燈臂形成質感對比。燈臂是漸變斷面的:根部粗、末端細,因為彎矩由根部承受。這三件事——重底座、漸變斷面、長懸挑——彼此是因果關係。側視全景,看得出比例。避免:底座做小或使用輕材料、燈臂斷面均勻、懸挑距離做短、底座使用金屬或塑膠。