D8.E.8 Element Design

Element design will be performed only for the moments MX and MY at the center of the element. Design will not be performed for SX, SY, SXY, SQX, SQY, or MXY. Also, design is not performed at any other point on the surface of the element.

A typical example of element design output is shown below. The reinforcement required to resist Mx moment is denoted as longitudinal reinforcement and the reinforcement required to resist My moment is denoted as transverse reinforcement (Refer to D8.E.1 Section Types for Concrete Design). The parameters FYMAIN, FC, and CLEAR listed in D8.E.3 Design Parameters are relevant to slab design.

Other parameters mentioned in the design parameters table are not applicable to slab design.

Sign convention of loaded plate element

Example element design input

Element design per the IS 456 code

UNIT MMS
START CONCRETE DESIGN
CODE INDIA
FYMAIN 415 ALL
MAXMAIN 60 ALL
DESIGN ELEMENT 43
END CONCRETE DESIGN

Example element design output

   ELEMENT DESIGN SUMMARY
   ----------------------
 
   ELEMENT    LONG. REINF      MOM-X /LOAD    TRANS. REINF      MOM-Y /LOAD
              (SQ.MM/ME)     (KN-M/M)         (SQ.MM/ME)      (KN-M/M)
 
      47 TOP :      156.         0.00 /    0        156.          0.00 /    0
         BOTT:      351.       -15.83 /    3        448.        -20.00 /    3