E_rebar = 200 205 195   kN/mm2     E_{prestressing steel} = 195 205 200   kN/mm2    
Concrete strength, fcu_cube = 40 30 35 40 45 50 55 60 65   N/mm2     steel rebar, fst = 500 460 500 250   N/mm2    
beam width , b = 300 5075100125150175200215225230235240245250255260265275280290300310315320325330335340345350360365370375380390400410415420425430450460475480500510525550575580600615625650675700725750775800825850875900925950975100010251050107511001125115011751200122512501275130013501375140014251450147515001525155015751600162516501675170017251750177518001850187519001925195019752000202520502075210021252150217522002225225022752300235023752400242524502475250025252550257526002625265026752700272527502775280028502875290029252950297530003025305030753100312531503175320032253250327533003350337534003425345034753500 mm   beam depth , h =825 5075100125150175200215225230235240245250255260265275280290300310315320325330335340345350360365370375380390400410415420425430450460475480500510525550575580600615625650675700725750775800825850875900925950975100010251050107511001125115011751200122512501275130013501375140014251450147515001525155015751600162516501675170017251750177518001850187519001925195019752000202520502075210021252150217522002225225022752300235023752400242524502475250025252550257526002625265026752700272527502775280028502875290029252950297530003025305030753100312531503175320032253250327533003350337534003425345034753500 mm   

bottom cover to center of bottom rebar 251520253035404550556065707580859095100105110115120125130135140145150 mm    top cover to center of top rebar 251520253035404550556065707580859095100105110115120125130135140145150 mm
f_pst = 1860 1650 1600   N/mm²     Max initial prestress = f_{pst_initial} = 70 75   % of f_pst     % loss = 25 20 25 30   %    

Prestressing Details ,
(Note: minimum 2 nos top rebars or 2 nos top strands is required)
(Put in prestressing details separated by single spaces)
φ_strands diameters = (all in mm) (φ_strands = 9.53 12.9 15.2 )mm    
Strand nos =    
Strand d = ( mm - make reference from top of beam/topping )    

Rebar Details
Include rebars ? : If not SELECTED, rebars details below will be ignored!
(Put in rebars details separated by single spaces)
Ast Diameters = (all in mm) (rebar = 8 10 12 13 16 20 25 32 40 50 )mm    
Ast nos =    
Ast d = ( mm - make reference from top of beam/topping )