砌门窗砖过梁或砖拱时,下面要支券板。过去习惯使用木券板,但木板容易损坏,浪费木材。用角钢作券板操作简便,当门窗砌至标高时,用两根50×50的角钢,卡在下一皮砖的砖缝里。砖墙为一砖厚,可在角钢上平铺一层砖,就在门窗 When the door and window bricks are lining beams or brick arches, the following coupon boards are required. Used to use wood coupons in the past, but the boards are easily damaged and waste of wood. The use of angle steel for voucher plates is simple and convenient. When the doors and windows are built up to the elevation, two 50×50 angle steels are used to clamp in the brick seams of the next tiling brick. The brick wall is a brick and can be tiled on the angle steel, just in the door and window