Bridging the Gap

ladybugbazaarUrban and Civil

Nov 26, 2013 (3 years and 6 months ago)

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Bridging the Gap


Gap


1.
a
break

or opening, as in a fence, wall, or military
line
;
breach
:

2.
an empty space or interval; interruption in continuity; hiatus:

3.
a wide divergence or difference; disparity

4.
a difference or disparity in attitudes, perceptions, character, or devel
opment, or a lack of confidence or
understanding, perceived as creating a problem

5.
a deep, sloping ravine or cleft through a mountain ridge

Bridge


1.
a structure spanning and providing passage over a river, chasm, road, or the like.

2.
a connecting, tr
ansitional, or intermediate route or phase between two adjacent elements, activities,
conditions, or the like:

4 types of bridges

Cantilever Bridge

∙ Crosses large spans often rivers or bays without the benefit of having a center support

∙ Crosses up to 1
,800 feet in length

∙ Extends over the opening from both sides

∙ Each half of the bridge is a cantilever, (it is supported on just one end) like to joining diving

boards

∙ The two cantilevers connect in the center of the bridge

∙ The center support is norm
ally smaller than the two outer supports

Beam Bridge


∙ The beams generally are located at fixed gaps

∙ A concrete deck is placed on the main flange to provide assistance against buckling

∙ Bridge deck forms are constructed according to the traffic load a
nd other design characteristics

∙ Beam bridges are helpful for short spans.

∙ Long distances are normally covered by placing the beams on piers

Beam bridges may be costly even for rather short spans, since expensive steel is required as a

construction mat
erial

∙ When long spans are required to be covered, beam bridges are extremely expensive

Building of the support piers may not always be possible due to the limitation of space.

Bridge beams are likely to droop between the piers, due to the different bridg
e loads acting

downwards

The sagging tendency is increased when the bridge span or load is increased.

Suspension Bridges



Incas used suspension bridges for livestock and farming purposes


suspension bridges are suspended between two high locations


held up by cables and ropes


downward arc that the surface must have in order for it to support the weight of people and

livestock


While these types of bridges can support low
-
weight traffic, they would not be sufficient for

modern automobiles or trains
.


The design allows them to cover longer distances than other types of bridges


are much cheaper to build, which makes them very attractive


because of the height of the suspension bridge boat traffic continues, which is not possible

with other types o
f bridges


Arch bridges


one of the oldest types of bridges


been around for thousands of years


have great natural strength


Commonly built of stone or brick and often reinforced by concrete or steel.


Instead of pushing straight down, the load of a
n arch bridge is carried outward


The weight is transferred to the supports at either end


The supports, carry the load and keep the ends of the bridge from spreading out

Bridging the gap between man and his God ordained destiny

Standing in the gap is n
ot the same a bridging the gap

Standing in the gap


Jude 1

Ezekiel 22:30

Expose yourself for the protection of another

Make defense against any assailing danger

Take the place of the fallen of the weak

Bridging the gap

1. Changing time and circumstances 2
Cor. 5:17

2. Your sole purpose is to satisfy the needs of others Romans 15:1
-
3

3. Honoring Covenant and not giving in to situations Gen. 18

4. Carrying the burden of others Gal. 6:2