Experiment No:-8
TWO
SPAN TEE BEAM BRIGE WITH SQUARE RETURNS
Aim:
-
To
draw the Two span tee beam briage with square returns using AutoCAD software
Problem:
The
following are the particulars of a two span T- Beam bridge with square returns
Bed
level - +25.00n
Full
supply level - 26.40m
Top
of foundation for allwalls - +24.70m
Bottom
of foundation for allwalls - +24.70m
Offset
for foundation concrete - 300mm
Road
level - +27.50m
Top
of parapet - +28.35m
Top
of kerb - +27.65m
Width
of kerb - 0.3m
Bed
width of river - 7.6m
Span
length - 3.5m
Width
of linear water way - 7.0m
Number
of spans - 2
Top
bund level - +27.15m
Abutment:
With
C.R. masonry in cm 1:5
Top
width - 600mm
Bottom
width - 1000mm
Water
face vertical length of abutment – 6.1m
bed
bock - 0.6x0.6x0.15 in CC 1:3:6
Return
Wall:
With
C.R. masonry in cm 1:5
Length
of return wall - 3.5m
Top
width - 600mm
Bottom
width - 1000mm
Front
face vertical Pier
With
C.R. masonry in cm 1:5
Width
- 600mm
Length
of pier - 6.1m
Beam:
No.
of tee beam - 2
Size
of tee beam - 0.15 x0.3m
Slab:
Thickness
of R.C.slab - 250m
Parapet:
Thickness
- 300mm
Pillars
for hand rails - 300x300mm
Coping
for parapet wall and pillars 0.1 m thick
Size
of R.C.C. vertical post for hand rails - 0.1x0.1x0.7m
Size
of pipe for hand rails - 25mm_
Road
way :
Width
of road way - 4.4m
Width
of road way in the approach - 5.4m
Revetment
and bed pitching
Length
of rough stone revetment and bed pitching at U/S and D/S sides – 2000m
Thickness
of revetment - 300m
Any
more data required may be assumed suitably
Draw
the following views in a suitable scale
1.
Half plan at foundation and half plan at top
2.
Half sectional elevation along the road way and half front elevation
3.
Half cross section along the centre line of pier and half section across the
road.
Procedure:
1.
switch on the computer
2.
Open Auto CAD 2008
3.
Setting units
(
ii) set the unit as decimal & millimeter
4.
Setting limits
5.
Zoom – All
6.
Using Line command Two span tee beam bridge with square returns are drawn.
7.
using hatch command where our necessary
8.
Dotted lines are drawn using line type.
Result:
Thus
the Two span tee beam bridge with square
returns
are drawn using Auto CAD 2014 software
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