Thursday, June 14, 2018

BASIC KNOWLEDGE OF CIVIL ENGINEERING

A Vision To Clear Solutions.
BASIC KNOWLEDGE OF CIVIL ENGINEERING


  • Cement's Initial Setting time should be 30 min(Minimum) and 90 min (maximum)
  • Final Setting time of cement should be=10 Hours
Types of test performed for a road's improved sub grade sand filling: 
  • Fines modules (FM) of Fine aggregates
  • California bearing ratio (CBR)
  • Dynamic Cone Penetration test
  • MDD of fine aggregate
  • Field Dry Density
Types of test Performed for earth filling in Embankment with specified soil:
  • Plasticity index
Types of test Performed for Concrete Work:
  • Setting time of cement
  • Compressive strength of cement
  • Gradation of coarse Aggregates
  • FM of Fine Aggreagtes
  • Water Absorption of Coarse aggregates
  • Loss angles abrasion test
  • Concrete cylinder casting & testing
Types of test performed for M.S High strength deform bar:
  • Tensile Strength ,Elongation and unit weight
Types of test performed for Brick Works:
  • Setting time of cement
  • Compressive strength of cement
  • FM of fine aggregates
  • Compressive strength of brick
  • Water absorption of brick
  • Efflorescence of brick
⇒Local Sand FM Limit should be 0.5 to 0.8
⇒Toak Sand FM Limit sould be 1.2 to 1.8
⇒Coarse sand or shylhet sand FM Should be 2.5
⇒At Improved Sub grade 0.5 to 0.8 FM Sand should be used.
  1. MS Flat Bar Weight determine equation=0.00785A
  2. Brick require for 1 square meter one brick flat soling=32 nos
  3. Brick require for 1 square meter one layer herring bone soling-52 nos.
  4. Cement require for 9.3 square meter neat cement finishing=1/2 bag or 25 Kg
  5. A head mason can work 25-30 cum brick work in a day.
# Lintel thickness Should be 15cm
#Parapet wall height should be 1 meter
# Window height should be 120cm
#D.P.C thickness should be 2.5 cm
# Plinth Height Should be 45cm
#Measurement of riser should be 15cm
#Building height should be 315cm
# Plaster Thickness at ceiling should be 6mm

$ 1 Cum Cement =30 Bags
$ 1 Cum Khoa    = 300 No's of Bricks
$ 1 Bag of cement =0.0347 cum cement  (50/1440=0.0347 cum)
$ Volume of per Bag cement=1.25 Cubic feet
$ Weight of Per Bag cement =50 Kg or 112 pb
$ Water absorption of brick ,If the brick take rest for 24 hours in under neath the water is 1/5 or 1/6 of the brick Weight
$ Measurement of brick=9.5 inches * 4.5 inches * 2.75 Inches(without mortar) and 10 inches*5 inches *3 inches (with mortar)

  • Weight of First class brick=3.85 Kg
  • Crushing strength of first class brick in per square not less than 1000 Pound
  • Tensile strength of first class brick in per square not less than 3000 Pound
#Brick Work the joint thickness b/w two bricks should be=12 mm
#Lapping Measurement at compression Zone Should be=24 D (Without hook)
#Lapping Measurement at Tensile Zone Should be=40 D (Excluding hook)
# One hook length should be=9D
# For Crank Extra length measurement should be=0.50d
# Stirrup length measurement equation=2(A+B)+30 cm
# Weight of step of a staircase =11.5 r (r=rise in cm)
# MS Plate weight determine equation=7.85 t
# The Brick should be take rest underneath the water at 2 hours before using.




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