One way and two way slab action (Force flow)
One way and two way slab action （Force flow)
SLAB TYPE OVERALL DES.MOMENT INDICATED LOAD ANO MESISTANCE CENTROIDS (a)ONE-WAY ISIMPLE SUPPORTSI YPAN .:44- 一 Fig.6-1 L0AD×4 ,u%。 M:.ny A rough ←44 IDGE LGAD CONSTANT approximation Ibl 2-WAY (CORNERS ALLOWED TO CURL UP) 发PN +LCNG专 of flat slab behavior (c)2-WAY ICORNERS HELD DOWN) YPLAN +LOG生D-EAR CO9NE5 L04X EDGE LOAD VARIES (dl 2-WAY (SLAB AND WALL CONTINUOUS) 为PLAN x江之 EOGE LOAD VARIES
Fig. 6-1 A rough approximation of flat slab behavior
Fig.6-2 Very stiff beams acted as wall support (a) (b) 2-WAY SLAB ONE-WAY SLAB CENTER STRIP CENTER STRIP ANY STRIP VERY STIFF VERY STIFF HERY STIFF
Fig.6-2 Very stiff beams acted as wall support
To withstand punch shear at the top of the column,certain measures should be taken: (1) Thickening slab with capital of the column; (2)Strengthening flat slab with web bar; (3) Strengthening by cross beam over the column; (4 Waffle panel filled in
To withstand punch shear at the top of the column, certain measures should be taken: (1) Thickening slab with capital of the column; (2) Strengthening flat slab with web bar; (3) Strengthening by cross beam over the column; (4) Waffle panel filled in
(a)FLAT SLAB ON COLUMN: 1a袋 人R 2E8S&2 Fig.6-8 3.PRESTRESSING CABLES DRAPED OVER THE COLUMNS WILL CARRY MUCH OF THE LOAD DIRECTLY TO COLUMNS Details of punching shear (b)LOCAL THICKENING OF SLAB MATERIAL HELPS CAPITOL (c)BEAMS OVER COLUMNS (d)WAFFLE PANEL FILLED IN
Fig. 6-8 Details of punching shear