Civil Engineering

Main reinforcements take the load

The steel reinforcement used will depend on several factors. Column length, beam length, and the column and beam cross section all depend on how much steel will be needed.

The aqueduct was created by the Romans to help carry water from far off places.

Lap reinforcement is needed because if lap is not given in a steel structure,that portion will be filled only with mass concrete and it will not attain the expected strength,so inorder to prevent that we can provide a lap rod whose length is 50D i.e 50 times the diameter of the rod.

Beam classifying

Limit state design

A diffrntial u tube manometer is a long bent tube whos both ends r conctd at points in a pipe where presure is to b measurd.Take d reading in d first tube h1 in mm n do similarly in secnd tube n its h2. Den d differential head wil b h1-h2.

3.2

Bollman

the gate value size should be greater than size of pipe .

rock and sand with egg to join the rock

i dont know what it means for the meaning of occupation for this insteant

it should be around 3.0 N/mm2 in 2 days.

That is near or probably in Attock, Pakistan

there are 500 bricks are counted for 1 m

160 mm -200 mm

With the development of our national economy, the construction of high speed railway reaches unprecedented upsurge. For 10 years, ZZHZ has been involved in manufacturing construction machinery and hoisting machinery. Therein, bridge girder launcher and gantry crane are widely used in high speed railway construction, being awarded the national patent. Featuring reasonable design, convenient installation and dismounting, especially high safety, they are highly praised by our customers and make great contribution to safe construction of high speed railway. Construction project of Beijing-Shanghai high speed railway will be one of the biggest projects.

According to design construction specification of Beijing-Shanghai railway and hoisting machinery design specification, ZZHZ designed HZQ series bridge girder launcher for China high speed railway, combined advantages of bridge girder launchers of home and abroad. Made up of main girder, front launching nose, O type support legs, front support legs, bottom launching nose, auxiliary overhead crane, auxiliary support leg of main girder, lifting trolley, winch and lifting system, the bridge girder launcher can install 900t precast girder with span from 24m to 32m.

Steps to construct bridge:

(1). After finishing installation on the abutment, the bridge girder launcher will move longitudinally from one pier to next pier

1. Two lifting trolleys move to the end part of the main girder, then lift auxiliary support legs of main girder, the bridge girder launcher begins to move forward.

2. After front support legs moves to certain position, lift its cylinder and fix the leg

3. Front lifting trolley lifts the end of the bottom launching nose to move forwards about half distance of main girder, auxiliary overhead crane under the front launching nose lifts the bottom launching nose to the front abutment, the longitudinal movement is finished.

(2). Transport girders and Feed girders

1. Two gantry cranes lift one precast girder at the same time

2. The transporter carrys the girder to the end of the bride girder launcher, then take back its cylinder. Trolley to move girders on the transporter carrys the precast girder to somewhere below the front lifting trolley of the bridge girder launcher

3. The front lifting trolley lifts the precast girder to move forwards until the rear lifting trolley can lift the rear part of the precast girder, then they move forwards together

4. Put the girder down into designated location

(3). When the bridge girder launcher installs the last girder,

1. Fold up the bottom part of the front leg, then longitudinally move forwards,

2. Support the support leg, then disassemble the rear support leg of the bottom launching nose and remove the launching nose, put down the last girder to finish constructing the whole bridge.

Board feet is the unit measure of rough lumber.

Linear feet is the unit measure of S4S lumber. (smooth 4 sides)

every 2 years, the cables are changed.

From an engineering perspective, it includes all design criteria for the below ground and above ground activities. This includes:

site survey: aerial, radar and topographic

geotechnical investigation, studies, analysis and rpeorting

hydrology studies and plans

site preparation, earth work operations

grading plans

erosion control plans

drainage plans

bill of quantities for construction operations

roads and access ways

fencing

landscaping

all interfaces with structural design

review and compliance in design of all permit criteria for a safe power plant

compliance with all country codes for environmentally safe power plant

The allowable bearing capacity (qa) is about one tenth of the unconfined compressive strength (UCS).ie

qa = UCS / 10

In classical architecture, a plinth is a vertically faced member immediately below the circular base of a column. The term also describes the lowest member of a pedestal and in general, the lowest member of a base; a sub-base a block upon which the mouldings of an architrave or trim are stopped at the bottom.

Western

First, you get good grades in highschool so you can get into college. Then you work hard for 4 years and graduate with a degree in engineering: civil, electrical, mechanical, and so on.

At some point, perhaps even before you graduate, you take a very difficult test from your state's licensing department. If you pass, you are issued an EIT certificate. (Engineer in Training) After 4 years (commonly) of apprenticeship under a licensed engineering, you take the PE test from your state's licensing department (PE = professional engineer) and if you pass this test, you are awarded a PE certificate, and you may practice engineering and stamp drawings with your PE stamp.

a perpend is a vertical joint between adjacent masonry units