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Common Abbreviation Used in Civil Engineering

CIVIL ENGINEERING ABBREVIATION:
The common abbreviation used in civil engineering are as follows:

A.A.S.H.T.O – American Association of State Highway Transport
A.B – Anchor Bolt Or Asbestos Board
A.C.I – American concrete institute.
A.R.E.A – American Railway Engineering Association.
A.S.C – Allowable stress of concrete.
A.S.T.M – American Society for Testing Materials
AC – Asphalt Concrete
AE – Assistant Engineer
APM – Assistant Project Manager
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Cutting Length of Stirrups

By
Sourav Dutta
Manager-Civil

We generally designate stirrups by its external dimensions. For example, a 250mm x 300mm stirrup has the 250mm and 300mm dimensions in perpendicular directions as shown in Fig 1.

Now a stirrup has 2 bends, types of which are shown in Fig 1 and Fig 4. Guideline of minimum bend length is as per Cl.3.8 of BIS2502 (shown in Fig 3).
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Different tests for rebar

By
Sourav Dutta
Manager-Civil

Brand embossing
On rebar pieces, different items are encrypted in the following manner:

Brand embossing

Here, X = Dia of rebar in mm, eg, 20
ABCD = Brand of rebar, eg, TATA TISCON / SAIL / JSPL etc
Y = Yield stress of rebar, eg, 500 indicates Fe500 with yield stress=500 Mpa
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Myths on Beam construction – Challenge to overcome

By
Sourav Dutta
Manager-Civil

There are a number of ways in which the superstructure can be built. In areas where average to good quality bricks are available, the walls of houses for two to three storeyed constructions can be built out of bricks with the slabs, lintels, chajja etc. in reinforced concrete. Such construction is supported entirely on load bearing brick walls (Fig 1), foundation of which ultimately transfers the building load to underneath soil.


Fig 1: Load Bearing Construction on brick

Fig 2 RCC framed construction
Fig 2: RCC framed construction

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Salient features of Foundation Construction

By
Sourav Dutta
Manager-Civil

What is Foundation?

Any structure can be divided into 2 parts:
1. Superstructure: Part of structure above Ground level (GL)
2. Substructure/ Foundation: Part of structure below GL

Components of foundation:
Typically there are 3 components of foundation: (i) Footing, (ii) Column, (iii) Tie beam (refer to picture below)

components-of-foundation

What is a footing?
Footing is that part of substructure that ultimately transfers the load (dead/live/wind/seismic) to the supporting soil in such a way that the safe load bearing capacity of soil is not exceeded (refer to table 1 for estimation of the safe load bearing capacity of the soil). Footing is a structure constructed in brick work masonry or RCC (refer to figure 1) under the base of a wall or RCC column for distributing the load over a large area.

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