BASIC KNOWLEDGE OF CIVIL ENGINEERING
Cement's Initial
Setting time should be 30 mcin(Minimum) and 90 min (maximum)
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
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.
MS Flat Bar Weight
determine equation=0.00785A
Brick require for 1
square meter one brick flat soling=32 nos
Brick require for 1
square meter one layer herring bone soling-52 nos.
Cement require for
9.3 square meter neat cement finishing=1/2 bag or 25 Kg
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
#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.
