Calculation of dead load

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Calculation of dead load

  1. 1. DEAD LOAD Let us calculate the dead load on structureTo calculate dead load we need volume and density of the structural element
  2. 2. Example 1Calculate the dead load of a R.C.C. beamSize of the beam is 23 X 30 cm. Length of the beam is 5.0mt.Calculate the dead load of beam length 5.0 MT Width .23 MT. Depth .30 MT. Volume .23 X .30 X 5.0 .345 cm3 Density of R.C.C. 2400 kg/cm3 Beam Dead load .345 X 2400 828 kg
  3. 3. Example 2Calculate the dead load of a Steel beamSize of the beam is 30 cm. diameter round pipe 6mm thickLength of the beam is 5.0mt.Calculate the dead load of beam length 5.0 MT Diameter .30 MT. Radius r .15 MT. thickness .006 MT. Area of hollow pipe 3.14 X(.15X .15- .144 X .144)= .00545 Volume 5.0 X Area .027 cm3 Density of steel 7850 kg/cm3 Beam Dead load .027 X 7850 213 kg
  4. 4. Example 3Calculate the dead load of a R.C.C. slabSize of the Slab is 3.0mt by 5.0 mt., Thick ness is 12 cm.Calculate the dead load of slab length 5.0 MT width 3.0 MT. thickness .12 MT. Volume 5.0 X 3.0 X .12 1.8 cm3 Density of R.C.C. 2400 kg/cm3 slab Dead load 1.8 X 2400 4320 kg
  5. 5. LIVE LOAD Let us calculate the Live load on structureWe have to refer the International building codes for live loadLive load is as per the usage of the building.
  6. 6. Example 4Calculate the live load of a R.C.C. slabSize of the Slab is 3.0mt by 5.0 mt., Thickness is 12 cm.Calculate the live load on slab for residential building. length 5.0 MT width 3.0 MT. Area 5.0 X 3.0 15 SMT Live load for 200 kg/ SMT residential building Live load 15 X 200 3000 kg
  7. 7. Example 5Calculate the live load of a R.C.C. slabSize of the Slab is 3.0mt by 5.0 mt., Thickness is 12 cm.Calculate the live load on slab for school building. length 5.0 MT width 3.0 MT. Area 5.0 X 3.0 15 SMT Live load for 300 kg/ SMT residential building Live load 15 X 300 4500 kg
  8. 8. Spanning systems of R.C.C. SlabOne-way slabsOne way slabs are spanning in one direction, Suitable for 1.8 to 5.0 MT.Also suitable for moderate loadsOne way slabs are supported by concrete beams or load bearing wallsIn short directionTwo–way slabsTwo way slabs are spanning in two direction,Suitable for medium spans and heavy loadsWhen we transfer the load of slabit should be transferred in one way slabto adjoining longer side of wall or beam half –halfit should be transferred in two way slabon all four sides of wall or beam.

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