formwork design for slab using MS shuttering, slab design with Mild steel ISA angle formwork design

Dear Friends, Good Evening, #civilengineering #civilengineers #drawing #drawingreading #reading #engineering #engineeringdrawing #engineeringdrawings #civilexecution #practical #practicalknowledge #formwork #formworkdesign #slab This video is created to easily understand the slab formwork design using MS plate or steel shuttering for slab required as per depth of slab or structure during civil execution at civil construction site. In this video using 3.15mm thick MS plate for shuttering of slab and 45*45*5mm ISA MS Angle as secondary runner@250 mm c/c for the support to MS plate design for 200mm thick slab. Primary runner is considered @1250mm c/c to design calculation for MS flat (secondary runner) and all calculations are described in this description. This video is very helpful for fresher student of trainee who has recently join the job at construction site for civil execution work. These all design data may useful to calculate the shuttering quantity of any slab at industrial area of any project site. DESIGN CALCULATION OF SHUTTERING & STAGGING FOR SLAB Design Data:- yield atress of steel = 2500kg/cm2 Allowable stress in bending of steel=.66fy= 1650kg/cm2[6.2.1 of IS 800-1984] Allowable stress in bending of timber(group B)= 120kg/cm2[Table 3 of IS 883-1994] Allowable stress in shear of timber(Group B)= 6.4kg/cm2[table 3 of IS 883-1994] Allowable bending stress in plywood= 105 kg/cm2 Density of concrete= 2.5 T/m3 Thickness of slab= 200mm Calculation of load:- Depth of slab = 200mm Load acting/m2 of slab=Density of concreteXthick of slab 0.5 T/m2 Considering live load including shuttering load= 0.3 T/m2 Total load= 0.8 Considering factor safety=1.2 0.96 Design of bottom shutter:- Load intensity on runner (considering 1 meter width) w= 0.96t/m2*1.0meter 0.96 T/m 0.96 Load intensity on steel plate(considering 1 m width) w= 0.96 T/m2 Considering , size of MS angle = 45*45*5 mm Using ISA 45*45*5 mm as secondary runner Section modulus For composite section, Zxx=I/y 3.32 cm3 Cross section area b*d+bp*dp 12.16 cm2 Moment of Inertia for composite section, Ixx=bXd3/12+Ah*h 13.78 cm4 Design of ISA 45*45*5 steel angle:- using steel runner/flat/angle as secondary runner Considering spacing of primary runner, L= 1250 mm Bending check:- Considering span of ISA to primary runner, L= 1250 mm Max. bending moment for simply supported beam with UDL BM= wL2/8 W= UDL on member L= Max. unsupported span of the member. BM=wL2/8= 0.0469 T-m Bending stress develop in ISA 45*45*5 = Bending Moment/section modulus Bending stress = BM/Zxx= 1411.9 kg/cm2 Allowable bending stress in steel=.66fy=2500*.66 1650kg/cm2 , hence safe These are the related video link to view how many practical knowledge and mcq for civil je examination of activity and responsibility of engineer at construction site execution. https://youtu.be/4VdB94EGnC0 https://youtu.be/mMbQMxbv4X4 https://youtu.be/5UqDCPSo010 https://youtu.be/cehnnxqhgX8 https://youtu.be/vpy2HB2LTP0 https://youtu.be/wy1v457x0mU https://youtu.be/k3HkQk3vv3Y https://youtu.be/hf8qg8C7_Hs https://youtu.be/UkfKP1ABfDo https://youtu.be/WsVE_PpTZ9k https://youtu.be/tFSidFqRj3c https://youtu.be/ZuqdRwBx3t8 https://youtu.be/H3mvt1TNFu0 https://youtu.be/2spLs-fCezE Thank you "This channel and I do not claim any right over any of the graphics, images, logo used in this video. All rights reserved to the respective copyright owners."