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Archive for September 2014

==>> TYPES OF BRIDGES ==>>



How do bridge's work????
Although there are many types of bridges most bridges work by balancing compression and tension. Place a flexible object like an eraser, sponge, or small piece of bread between your thumb and index finger. Press your fingers together. One side of the object will bend inwards and shorten while the other will bend outwards and lengthen. The shorter side has been compressed, while the other side is under tensionBridge
components experience these tension and compression stresses



ARCH BRIDGE ==>>
Arch bridge are structures in which each span forms an arch. The arch bridge is one of the oldest types of bridges. Early arch bridges were made from stone. The spans range up to about 1700 ft.


GIRDER BRIDGES ==>>

Girder bridges are made of beams called girders. The ends of the beams or girders rest on piers or abutments. The span length of girder bridges ranges up to about 1000 ft.

TRUSS BRIDGE==>>

Truss bridges are supported by frameworks called trusses. Trusses are beams arranged to form triangles.

CANTILEVER BRIDGE==>>

Cantilever bridges consist of two independent beams, cantilevers, that extend from opposite banks of a waterway. Cantilever bridges have spans as long at 1800 ft.

CABLE STAYED BRIDGE==>>

Cable-stayed bridges have roadways that hang from cables. The cables are connected directly to towers.

MOVEABLE BRIDGE==>>

Moveable bridges have roadway that is moved to provide enough clearance for boats or large ships to pass. An example of a moveable bridge is a drawbridge that tilts the roadway upward.

SUSPENSION BRIDGES==>>

Suspension bridges may be the most impressive type of bridge with their long main span and beauty. These bridges have a roadway that hangs from steel cables supported by two high towers. The difference between suspension bridges and cable-stayed bridges is that suspension bridge cables are not directly connected to the towers. The cables of a suspension bridge are not connected to the bridge - the cables pass through a hole in the top of the towers.


A suspension bridge has at least two main cables. These cables extend from one end of the bridge to the other. Suspender cables hang from these main cables. The other end of the suspender attaches to the roadway.


Suspension bridges have the longest spans in the world and are used to cross great distances. These types of bridges are used to cross deep water channels, cannons or gorges, where construction of supporting piers can be difficult. The towers can be placed far apart eliminating the need for multiple towers and piers. Some suspension bridges have a main span longer then 4000 ft. The longest suspension bridge in the world is in Japan (the Akashi- Kaikyo Bridge) and has a span over a mile long. The largest bridges have cables several feet wide which weigh thousands of pounds per foot. For that reason the cables are spun in place.
Saturday, September 27, 2014
Posted by Saurabh Gupta
Tag :

CTM BRANCH ASSIGNMENT (AUGUST) & LIST OF CONSTRUCTION MATERIALS

National Institute of Technical Teacher's Training and Research,Bhopal



CTM BRANCH ASSIGNMENT LIST 

Assignment 1 - Advance pavement construction (SRY)

Q1- What is CBR ? How CBR of any soil can be determined ? CBR value of different soils?
Q2- What is OMC ? Methodology to determine OMC ?

Assignment 2 - Low cost building material & Construction Techniques (AKJ)
Q1- How we can reduce the cost of construction at any particular place ?

Assignment 3 - Construction Material (VHR)
Q1-Describe the purpose of standardization & Codification of construction materials , with example?
Q2- Discuss the effect of following on any 2 building material 
  • Temperature
  • Weather
  • Corrosion
  • Chemical attack 
No one of materials get repeated by any student so i m providing some materials list comment ur materials so it will not taken by others and update here for further reference , if want to use material which are not on the list , then also comment here 
COMMENT ON COMMENT BOX BELOW WHAT MATERIAL U LIKE TO USE :)
SNO
MATERIALS
AVLIABILITY
1
Cement
Nitin
2
Sand 
SAURABH
3
Stone
4
Timber
SAURABH
5
Wrought iron
6
Brick
Rochak
7
Plasticizer/ Super Plasticizer 
8
Gypsum
9
Bitumen
Abhi
10
Aggregate
Piyush
11
Glass
12
Polymers / Elastomers
13
Bamboo
14
Cloth and Poles (pavilion, tent)
15
Earth, Rammed
16
Felt (yurt)
17
Drywall 
18
Metal Sheet
19
Matting
20
Brass
21
Bronze
22
Copper 
23
Iron
24
Steel 
Rochak
25
Tin
26
Lime
27
Paints
28
varnishes
29
Plaster of paris
30
Damp proofing materials
31
Formwork
32
Aluminum
33
Plastic
34
Rise husk / Coconut Husk
35
Rubber
36
Ceramics
37
Quartz
38
Feldspar
39
Oil / Grease
40
Stone Dust / Stone chip
41
Recycled Concrete
42
Low heat cement
Nitin
43
RMC
Abhi
44
Thread / Wire / Rope
45
Fixers & Fasteners
46
Railway sleepers
47
Condensed Silica Fume (CSF)
48
Roofing tiles
49
Asbestos Sheet
50
P.V.C. Wires And Cables
51
Artificial Marbles
52
R.C.C. Poles (Cement Electric Poles)
53
Sanitary Products (Wash Basin, Bathroom Closets)
54
Plywood
Siddhant
55
Fberglass
56
Pre-stressed Concrete
57
Steel fibre
Piyush
58
AAC BLOCK
Puneet
59
Fly ash
Siddhant
60
Concrete
Faiz




Any doubt ?? comment fast !!

Friday, September 5, 2014
Posted by Saurabh Gupta
Tag :

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