DUCT CONNECTION STRUCTURE OF BEAM

PROBLEM TO BE SOLVED: To provide a duct connection structure of a beam capable of being disposed so as to match a duct with a height of the duct without reducing a flow rate based on an inner diameter of the duct, even in a case where the inner diameter of the duct is equal to or more than a bore diameter of a beam through-hole.SOLUTION: A duct connection structure 4 of a beam is configured to connect a duct 3 to a beam 1 of a building through a plurality of beam through-holes 2 formed in a longitudinal direction of the beam with intervals. The duct includes a cover 5 mounted on the beam 1 of the building so as to cover the plurality of beam through-holes 2, and the duct 3 connected to the cover 5. The duct connection structure of the beam is characterized in that an inner diameter B of the duct 3 is equal to or more than a bore diameter A of the beam through-hole 2, and an area of the inner diameter B of the duct 3 is equal to or less than a total area of hole areas of the plurality of beam through-holes 2 (bore diameter A) covered with the cover 5.SELECTED DRAWING: Figure 2 【課題】ダクトの内径が梁貫通孔の孔径以上であっても、ダクトの内径に基づく流量を低下させずに、ダクトを梁の高さに合わせて配設できる梁のダクト接続構造を提供する。【解決手段】建物の梁１にその長手方向に間隔を隔てて複数形成された梁貫通孔２を介してダクト３を繋げる梁のダクト接続構造４であって、建物の梁１に梁貫通孔２を複数覆って装着されるカバー５と、カバー５に接続されたダクト３とを備え、ダクト３の内径Ｂが梁貫通孔２の孔径Ａ以上であり、且つ、ダクト３の内径Ｂの面積がカバー５で覆われる複数の梁貫通孔２（孔径Ａ）の孔面積の合計面積以下である、ことを特徴とする梁のダクト接続構造。【選択図】図２