Construction

Specification of Steel


Types of Steel

 Generally the steel is of two types mentioned below.  

  • Structural steel
  • Mild steel and medium tensile steel bars for concrete reinforcement.

Structural Steel:

This specification covers steel sections, plates and bars of the following categories for use in structural work:-   

Quality of Finished Structural steel

All finished steel subject to tolerances should be fine and rolled cleanly to the dimension, sections and weights specified. The finished material should be free from cracks, surface flaw lamination rough, jagged and imperfect edges and all other defects. The material should comply in all respects with the test and requirements mentioned in INDIAN standard 226, applicable to the material (Members, sections, plates and bars.) specified or required.

   

Structure Steel

(This Picture is Contributed by "Gungya")

 S.No

 Steel Designation

 Purpose for which intended

 1.  A In structures subject to dynamic loading and other special cases.           
 2.  B In structures not subject to dynamic loading.
 3. C In structures subject to dynamic loading and when special  welding jobs are involved.

The following varieties of steel should be used for structural purposes.

  • S.T 42-S: The standard quality steel designated as ST-42, confirming to IS: 226 should be used for all types of structures (riveted or bolted) including those subject to dynamic loading and where fatigue, wide fluctuation of stress and reversal of stress are involved, as for example: - Girders, Crane Gantry, road and railway bridges etc. It is also suitable for welding up to 200 mm thick material.
  • S.T 42-W: The fusion welding quality steel designated as ST 42 W confirming to IS: 2062 is used for the structures subject to dynamic loading.           
  • S.T 42-O: The ordinary quality steel designated as ST 42-O confirming to IS: 1977 is used for the structures not subject to dynamic loading, other than wind load where welding is not used.
  • S.T 32-O: This ordinary quality of steel designated as ST 32-O confirming to IS: 1977 is used for door window frames, grills, steel gates, building hardware fencing etc.


Mild steel and medium tensile steel bars for concrete reinforcement

 The specification covers requirement and methods of the test for rolled mild steel and medium tensile steel bars in round and square sections.

TMT Steel bar

(This Picture is Contributed by "Arjun")

Tolerance of medium tensile steel for Construction Work

The bars should be rolled up to following tolerances.

 S. No.    Diameter of Bar(mm)  Total Tolerances(mm)
 1.  19 and below  0.4
 2.  20 and 21  0.45
 3.  22,23 and 24  0.5
 4.  25 and over

 2% of dia.

Quality of Finished medium tensile steel:

The following points ensure the quality of finished steel for construction work.

  • All finished steel should be fine and rolled cleanly to the dimension and should have weight as specified by BIS subject to permissible tolerance.  
  • The finished material should be free from cracks, surface flaws laminations, rough and imperfect edges and other harmful defects. 
  •  Steel section should be free from excessive rust, scaling and tilting and be well protected.  
     

Pipes made of mild steel

(This Picture is Contributed by "Gungya")

Manufacturing of steel:

All type of steel should be manufactured by open hearth, electric, duplex or by acid Bessemer process or by a combination of the processes.
 

;
Any small carelessness during fabrication works can deform the shape of steel doors and windows etc. Fabrication should be done as per designs and drawings of these steel items. Read this article to know about proper fabrication of doors and windows properly.
Before you purchase mild steel members for construction of your house, you must know weight and cost of steel members since the shopkeeper shows prices of steel members in weight. This article gives details of estimated weight and cost of steel members.
Steel is the most important element in construction of a home or building. It must be free from cracks and surface flaws having uniform width and thickness without any joints. This article discusses about steel purchasing guidelines in detail.
To ensure the strength and quality of your house construction, utilize HSD Bars since they are produced in form of cold twisted deformed bars provided with lugs, ribs, projection or deformation on the surface. This article tells about features, strength and production of HSD bars.
Are you looking for high strength bars for construction of your house? Make a choice of thermo mechanically treated bars which are high strength deformed steel bars used in reinforced cement concrete (RCC) work. This article tells you about features of TMT bars, thermo mechanically treatment process and getting higher strength of TMT bars.
Different steel bars are recommended for their relative tensile stresses.Steel bars are major components of construction.Here is what you need to know about steel bars (Sariya).
Binding wire is important material in construction process, especially in RCC work. What is binding wire and what are its specification and uses, lets know in following article.
Kota stone flooring is a subtle blend of grandeur and luxury giving the interior and exterior a gorgeous look.......
To get maximum ventilation and natural light in your house, make sure the building is properly oriented. Orientation of building saves energy and provides comfortable living as well. This article tells you about various factors and benefits of building orientation.
Preview some of the most impressive pictures of kitchen from GharExpert Gallery.
A solid roof on building is very important for everybody living in the house. The roof should be constructed in a way that assures you great safety. Here are given details about different types of roofing.
Frames of doors and windows are most important parts of your doors and windows. They are available in different size, height, width and shapes. Frames hold locks and hinges and support door and windows to shut and open easily. Here is what you need to know about different doors and windows frames.
Different steel bars are recommended for their relative tensile stresses.Steel bars are major components of construction.Here is what you need to know about steel bars (Sariya).
Brahmasthan is a powerful zone of the house. It should have open space for flow of energy in the house. The positive energy is very useful for living beings of the occupants of the house.
Brick work is an important part of construction work done with the help of bricks and cement mortar. It is done with different quality of bricks with different ratios of cement mortar according to the requirement.
Living room or Drawing room should be located in east or north direction. The ideal location of a living room depends on plot facing.
Are you remodeling your bathroom? Bathroom shower doors make your bathroom a style icon. Read the following article that will help you select the bathroom shower door that will exactly suit your bathroom.
Without knowing perfect mixture of cement and sand you can not achieve your goal.
Manufacturing date, grade and type play vital role in purchasing right cement and there should be no lumps in it.
First Class Bricks must be homogeneous in texture without showing appreciable sign of efflorescence.

One wall compact stainless steel kitchen
One wall compact stainless steel kitchen
Modular kitchen design in wooden laminates with stainless steel Cooking range and hood
Modular kitchen design in wooden laminates with stainless steel Cooking range and hood
Steel Railing,SS Railing, Handrail,Glass Railing
Steel Railing,SS Railing, Handrail,Glass Railing
Steel Railing
Steel Railing
Wooden kitchen having stainless steel cooking range and wooden cover for hood
Wooden kitchen having stainless steel cooking range and wooden cover for hood
Modern Kitchen Cooking Range and hob in steel finish
Modern Kitchen Cooking Range and hob in steel finish
Kitchen Jindal Steel
Kitchen Jindal Steel
Exterior gate design with the combination of wood and and stainless steel
Exterior gate design with the combination of wood and and stainless steel
door design with the combination of stainless steel and copper
door design with the combination of stainless steel and copper
Extraordinary stainless steel stair design
Extraordinary stainless steel stair design
Ultra cool steel railing design
Ultra cool steel railing design
Steel Bar2
Steel Bar2
Steel Building
Steel Building
Structure steel
Structure steel
Steel on roof
Steel on roof
steel pipe
steel pipe
Inside view of steel roof
Inside view of steel roof
Stainless Steel Kitchen SInk
Stainless Steel Kitchen SInk
Stainless Steel Sink
Stainless Steel Sink
Hardwood flooring with steel strips for open kitchen and living room
Hardwood flooring with steel strips for open kitchen and living room
Kitchen design with island in steel  and wood
Kitchen design with island in steel and wood
Steel Plates
Steel Plates
steel wood gate
steel wood gate
Steel Bars For RCC Work
Steel Bars For RCC Work
Italian modern kitchen in stainless steel and Wooden finish, Ceiling lighting with POP ceiling design in kitchen
Italian modern kitchen in stainless steel and Wooden finish, Ceiling lighting with POP ceiling design in kitchen
Steel Kitchen accessories in a modern kitchen designed with dark colored cabinets
Steel Kitchen accessories in a modern kitchen designed with dark colored cabinets
Cool kitchen interior in wood and steel with island and barstool counter
Cool kitchen interior in wood and steel with island and barstool counter
slab steel
slab steel
Roof Steel Design
Roof Steel Design
Round Kitchen Counter Design
Round Kitchen Counter Design
steel grills
steel grills
24" Rainfall Stainless Steel Square Led Shower Head
24" Rainfall Stainless Steel Square Led Shower Head
garage door steel
garage door steel
Gate Design in steel and dark color wooden batons
Gate Design in steel and dark color wooden batons
Main Door design in steel with little wood
Main Door design in steel with little wood
pvc decorative panel with steel finish and grooves
pvc decorative panel with steel finish and grooves
Round Kitchen Counter Design
Round Kitchen Counter Design
steel
steel
Round Kitchen Counter Design View
Round Kitchen Counter Design View
STAIR STEEL RAILING 1
STAIR STEEL RAILING 1
Stainless Steel Countertop for Kitchen
Stainless Steel Countertop for Kitchen
steel appliances and wooden cabinetrs in large spacious kitchen
steel appliances and wooden cabinetrs in large spacious kitchen
steel for slab
steel for slab
Tile Floor and wall tiles in Bathroom. Steel finish bathroom sink
Tile Floor and wall tiles in Bathroom. Steel finish bathroom sink
Steel Bars For RCC Work
Steel Bars For RCC Work
16" Stainless Steel Square Rainfall Led Shower Head
16" Stainless Steel Square Rainfall Led Shower Head
Glass dining with steel stand for kitchen
Glass dining with steel stand for kitchen
Steel bars at construction site
Steel bars at construction site
steel for slab
steel for slab

Copyright 2007- GharExpert.com All rights reserved.