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Best 30 knowledgeable Structural Steel Question with Answer | MBSL

Question 1. What Is Structural Steel Design?

Answer :

structural steel design is an area of knowledge of structural engineering used to design steel structures. The structures can range from schools to homes to bridges.The second is the Load and Resistance Factor Design (LRFD) method.

Question 2. What Are The Mechanical Properties Of Structural Steel?

Answer :

Resistance to deformation based upon:

Material.
Length.
X-section.
Question 3. Explain The Design Process Of Structural Steel?

Answer :

Design process :

Preliminary member sizing of beams
Structural analysis – modeling, analysis
Design review – member modifications
Cost of estimation
Preparation of structural drawings and specifications
Loads for structural analysis and design
Dead load
Live load
Mean return period OR
Recurrence interval OR
Live loads for various occupencies
Reduction in basic design live load
Impact Load
Wind load
Question 4. Describe The Steps Used For Erection Of Structural Steel?

Answer :

Material received at site.
Concrete bases and anchor bolts.
Shims.
Pre-assembly at ground level.
Main construction steel erection (dimension bolt)
Tightening for anchor bolt.
Alignment for structural steel.
Tightening for steel.
Tightening for anchor bolts.
Grouting.
Complete structural steel erection (secondary beams, bracing).
Calibration of wrench and device.
Modification during and after erection includes cutting, welding, NDT,….etc).
Painting inspection.
Question 5. Which Are The Defects You Can Except During Inspection Of Material Receiving At The Site?

Answer :

Lamination.
distortion.
pitting.
Question 6. Mention The Steps To Check Material Received At The Site?

Answer :

Visual inspection.
Dimension inspection.
Verification of heat no and mill certificate pieces of information.
Question 7. How Can You Check The Support Foundation?

Answer :

Location.
Orientation.
Elevation.
Question 8. What Is The Minimum Top Elevation Of Leveling Shims?

Answer :

Minimum 25mm.

Question 9. What Is The Acceptable Variation In Dimensions Between The Centres Of Two Anchor Bolts (within An Anchor Bolt Group)?

Answer :

Maximum 3 mm.

Question 10. Which Code You Can Use For Check Bolts Used For Primary Structural Connection?

Answer :

ASTM A325 N.

Question 11. What Is The Minimum Size Of Bolt Used At Astm A32 N ?

Answer :

Minimum size 20mm.

Question 12. How Many variations In Elevation Of The Top Of Anchor Rods?

Answer :

Max 13 mm.

Question 13. How Many Days Minimum Required To Archive 70% Concrete Strength (curing Time)?

Answer :

7 days minimum.

Question 14. How Many Bolts Minimum Required Per Connection?

Answer :

2 bolt minimum required.

Question 15. How Many variations In Dimension From Centre Of Any Anchor Bolts Group To Be Establish Column Line Through The Group?

Answer :

Equal to or less than 6mm

Question 16. Which Code You Can Use For Welding Of Structural Steel?

Answer :

D1.1.

Question 17. What Are The Types Of Joints You Can Use For Erection Of Structural Steel?

Answer :

Snug­tightened joint. Pretension joins or slip critical joint.

Question 18. What Is Minimum Thickness Of Any Part Of Structural Steel Shape?

Answer :

Minimum 5 mm.

Question 19. What Is The Vertical Tolerance (alignment) For Straight Compression Structural Member?

Answer :

1 mm per 1m accepted.

Question 20. What Are The Types Of Methods Of Bolt Tightening?

Answer :

Snug tightening, turn of nutpreten sioning calibrated wrench pretensioning or direct­tension indicator pretensioning

Question 21. Complete, All Bolts, Nuts, And Washers Shall Be Properly Identified And Marked With?

Answer :

Material grade.
manufacture’s logo.
Question 22. .all Nuts For High Strength Bolts Shall Be …………. To Reduce To Torque Installation.

Answer :

Wax – dipped.

Question 23. All Gusset And Stiffener Plates Shall Be …………..mm Minimum Thickness

Answer :

10 mm minimum.

Question 24. What Is The Minimum Height Of Handrails Provided On Walkways And Platforms?

Answer :

Over 1 meter heigh.

Question 25. Complete, Standard Bolt Holes Shall Not Be Enlarge By More Than ……………. Mm To Make Connection Resulting From Minor Mislit

Answer :

1mm.

Question 26. What Are The Properties Of A Steel?

Answer :

The important characteristics of steel for design purposes are:

yield stress (Fy).
ultimate stress (Fu).
modulus of elasticity (E).
percent elongation (ε).
coefficient of thermal expansion (α).
Question 27. What Are The Types Of Structural Steel?

Answer :

Types of structural steel: Various types of structural steel sections and their technical specifications are as follows:

Beams.
Channels.
Angles.
Flats
Question 28. Meaning of Steel Beams?

Answer :

Steel Beams: Steel Beams is considered to be a structural element which mainly carries load in flexure meaning bending. Usually, beams carry vertical gravitational force but are also capable of carrying horizontal loads generally in the case of an earthquake.

The mechanism of carrying load in a beam is very unique, like; the load carried by a beam is transferred to walls, columns or girders which in turn transfer the force to the adjacent structural compression members. The joists rest on the beam in light frame constructions.

Question 29. Explain About Steel Channels?

Answer :

Steel channels: Steel channels are used ideally as supports and guide rails. These are roll-formed products. As a result, The main metal used for making channels is also steel along with aluminum. There are certain variations that are available in the channels category, the categorization is mainly on the shape of the channel, the varieties are mentioned below:

J channels: Above all This kind of channel has two legs and a web. One leg is longer. This channel resembles the letter-J.
Hat channels: This channel has legs that are folded in the outward direction resembling an old-fashioned man’s hat.
U channels: This most common and basic channel variety. It has a base known as a web and two equal length legs.
C channels: In this channel, the legs are folded back in the channel and resemble the letter-C. C channels are known as rests.
Hemmed channels: In this kind of channel the top of the leg is folded hence forming a double thickness.
Question 30. What Are The Applications Of Steel Channels?

Answer :

Application: Steel channels are subjected to a wide array of applications. The application fields are:

Construction.
Appliances.
Transportation.
Used in making Signposts.
Used in wood flooring for athletic purposes.
Used in installing and making windows and doors.

Source

Unilever
Construction Consultant, News

Construction Honored with Unilever Bangladesh Ltd

Project With Unilever Bangladesh Ltd

 

 

Unilever Bangladesh Limited has great products from their range of more than 400 brands give them a unique place in the lives of people all over the world. When consumers reach for nutritionally balanced foods or indulgent ice creams, affordable soaps that combat disease, luxurious shampoos or everyday household care products, there’s a good chance the brand they pick is one of ours. Seven out of every ten households around the world contain at least one Unilever product, and their range of world-leading, household-name brands include Lipton, Knorr, Dove, Axe, Hellmann’s and Omo. Trusted local brands designed to meet the specific needs of consumers in their home market include Blue Band, Pureit and Suave. Whatever the brand, wherever it is bought, They are working to ensure that it plays a part in helping fulfill their purpose as a business – making sustainable living commonplace.

Project Construction Work :(1)

Work Under for supply and cialisfrance24.com installation RCC floor Construction, floorMezzaFloor Construction

Project Name: Mezzanine floor construction work in ARCS FG Area

Location: Tongi, Gazipur

Project Construction Work :(2)

Supply and Installation Pre-Engineered Steel Building for Extension of Sankalp Planet

Project Name: Prefabricated steel structure Extension

Location: Kalurghat, Chittagong.

<p hidden>Planning for Construction
To achieve the client’s aspirations on cost, programme and quality, planning for construction should start at the very beginning of the design process. Such planning should consider the construction sequence, the design factors that affect buildability, and site practice in terms of typical erection plant.

[top]Construction sequence
A separate article on Health and Safety includes a section that identifies the design decisions that affect the erection method statement development. In the broader design and planning context, there are three planning factors that affect the buildability of the scheme. These are:

Practical erection sequence. The location of bracing systems or other means of maintaining structural equilibrium is crucial here.
The simplicity of assembly. Simply-assembled connections are the main factors here.
Logical trade sequences. This will affect how the development of the master contract programme as the Pre-tender H&S plan metamorphoses into the Construction H&S Plan.

Unilever

Choosing simply-assembled connections will affect the ability to use site welding. For a joint to be site welded in position, the members will need to be held securely in a position such that the fit-up for welding is accurate and rigid. Nearly always this will require both a temporary bolted connection and additional temporary supports. The need to provide these additional facilities often results in site welding being an expensive option.

 Design factors

Four design factors to be considered that contribute to buildability are:

Repetition and standardization. There are two aspects to standardization: repetition of the same building type (e.g. the portal shed) and common/standard details for connections.
Achievable tolerances. If “tight” tolerances are specified (i.e. more restrictive than those in the National Structural Steelwork Specification – NSSS), then special controls will be needed and possibly specially-engineered details.
Frame type. Here, the primary choice is between braced frames or continuous frames
Floor systems. For multi-story frames, the choice of floor system will affect the erection sequence as it determines the stability of the part erected structure.

Unilever

[top]Site practice
The key parameter when planning for erection is the piece-count. Figures quoted in the SCI case study on Senator House in SCI-P178 are an average 39 pieces lifted and placed per hook per shift and a peak of 60. With a single hook in use and piece weights averaging around 500 kg, this results in an erection rate of around 100 tonnes per week which releases over 1200 sq m of deck per week. This is a relatively heavy piece weight for a medium rise structure, but the area target is dependent on piece count not weight.

The number of pieces erected is dependent on the choice of the crane, and its availability for steel erection rather than other construction activity. Cranes vary in their rapidity of movement (hook travel, slewing and jibbing out), and their overall productivity can also be influenced by a wise choice of location within the site footprint. If two crane lifts are necessary the rules for their use in tandem impose a significant penalty in terms of time taken to sling, lift and place loads.

Rates of erection are also influenced by whether special rigging methods and devices can be used for slinging and release of loads.

Steel Erection

Steel erection essentially consists of four main tasks:

  • Establishing that the foundations are suitable and safe for the erection to commence.
  • Lifting and placing components into position, generally using cranes but sometimes by jacking. To secure components in place bolted connections will be made, but will not yet be fully tightened. Bracings may similarly not be fully secured.
  • Aligning the structure, principally by checking that column bases are lined and level and columns are plumb. Packing in beam-to-column connections may need to be changed to allow column plumb to be adjusted.
  • Bolting-up which means completing all the bolted connections to secure and impart rigidity to the frame.

    Erection techniques

    MEWP on partly erected frame.JPG

    MEWPs on a partly erected steel frame

    Cranes and MEWPs (Mobile Elevating Work Platforms) are predominantly used for the erection of structural steelwork for buildings and bridges in the UK, although other techniques are sometimes used for steel bridge construction. Generally, cranes may be divided into two broad categories, mobile and non-mobile. The first category includes truck mounted cranes, crawler cranes and all-terrain cranes, whilst the second category primarily covers tower cranes.

    MEWPs are used to access the steelwork during erection, i.e. to bolt-up the pieces being lifted in by the crane. However, the MEWPs themselves can be used both on the ground or on the partly erected steelwork to erect lighter steel elements directly provided special measures are taken to support the MEWP (e.g. steel sections to act as rails supported on the partly erected steel). Also, the steelwork will need to be checked that it can support the weight of the MEWP.

    Mobile cranes

    Normally, truck mounted cranes do not require a backup crane for site assembly, and require very little set-up time. These two attributes mean that they are suitable for a one-off, single day commissions. Their main drawback is that to achieve a high lifting capacity from a light vehicle, a larger footprint is required than for an equivalent crawler crane. The size of the footprint can be increased using outriggers, but good ground conditions are necessary to provide a solid base and ensure adequate stability.

    Crawler cranes are more rugged than truck mounted cranes. Ground conditions are therefore less critical. Crawler cranes may travel with suspended loads on site because they are stable without the use of outriggers. They also have a relatively high lifting capacity. Daily hire is not possible for crawler cranes, because transportation to and from the site is expensive, and they require site assembly. They are however more competitive than truck mounted cranes for long periods on site in a relatively fixed location.

    All-terrain cranes provide a compromise between the advantages and disadvantages of crawler cranes and truck mounted cranes. They are about 20% more expensive to hire than the latter.

    Typical mobile cranes, be they crawlers, truck mounted cranes, or all-terrain, have a rated capacity of around 30 t to 50 t. The largest examples are rated at over l000 t. However, actual lifting capacity is a function of radius and may be much less than the rated capacity for a given situation. ‘Heavy-lift’ rigs can be used to increase the capacity of large cranes for one-off applications.

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Construction Consultant, News

Construction Honored with Kazi Farms Group

Company Background

Kazi Farms Limited was established in 1996 as a hatchery for imported eggs; the following year it started its own parent farms. In 2004 production started in our grandparent (GP) farms. which was responsible for Bangladesh’s first exports of hatching eggs and day-old chicks in 2004. In that year, their Managing  Director, Kazi Zahedul Hasan, was named Businessperson of the Year by the Daily Star/DHL Business Awards.

Broiler parent chicks and broiler chicks
Kazi Farms Group is the Bangladesh franchisee of Cobb-Vantress USA for the Cobb 500 broiler, acknowledged being the best broiler in the world. The Cobb 500 parent and broiler chicks of Kazi Farms Group are considered to be the best performing chicks in the domestic market and are sold at a premium over other broiler breeds.

Layer chicks and table eggs
Kazi Farms Group is also the distributor for Hy-line brown and white layers in Bangladesh.Hy-line International is the oldest poultry breeding company of the world and is the leading breeders of layers. Kazi Farms’ own commercial layer farms make it the largest producer of commercial table eggs in Bangladesh.

Feed
Kazi Farms Group expanded its operation into poultry feed manufacturer in 2006. Within a very short period, it has become recognized as a market leader in both quality and volume. In order to ensure feed quality, Kazi Farms Group received technical assistance from Cargill USA and Buhler Switzerland to set up its commercial feed mill operation.
The Gajaria feed mill uses state-of-the-art sanitizing pellet mills from Buhler of Switzerland, a manufacturer of the world’s best feed equipment. By eliminating any possible bacterial contamination from the feed, the Buhler sanitizing pellet mills ensure that poultry farmers experience fewer disease outbreaks and see better results.

In 2014 they offered us to construction their us to build litter house and storage shed

Construction Work:

Work Under for supply and installation of prefabricated steel structure of  litter House and storage shed in Uttara Kazi, Haradighi, Tetulia, Panchagarh

Their Offer

1.They Offered Litter House structure (50’*190 c/c)
2.Also Offered storage shed structure(50’*200 c/c)

Litter House shed with roof monitor

Steel Column, main beams, secondary beams, roof monitor, rafter, purlin, roof sheet, anchor bolts, roof monitor, PE from insulation underneath the roof sheet, gable wall sheeting of both end, two coat gray oxide, all other accessories, erection, all complete according to offered design.

Construction Honored with Lalmai Group

Company Background :

Lalmai Group was established back in 1980. It happens to be one of the oldest business faq conglomerates in Bangladesh. The group consists of several companies out of which, Arku Foods Limited, Lalmai Food Products Limited and Baby nutrition Limited are currently active in the FMCG industry having as many as 15 brands in total. The brand “Arku” is currently one of the most established and famous brands in the Bangladeshi market with a large range of products under its umbrella. “Eldomilk” and “Eldobaby” are two of the most trusted baby milk powder brads in Bangladesh. On the other hand, comparatively newer brands like “Twin Krunch”, “Wiitos” and “Kool C” are opening the new horizon of opportunities for the group.

Construction Work :(1)

Pre-fabricated steel Building Shed in Bankhrabad

Project Name : Arku Food Industry

Project Location : Bakhrabad,Comilla

Construction Work :(2)

Additional Steel Building Shed In Africa

Project Name : Factory Steel Shed Building

Project Location :Sierra Leon,Africa

steel structure manufacturer
Construction Consultant, News

Construction Honored with Sim Group

SIM GROUP, a large contributor in manufacturing and economic development of Bangladesh, displays admirable performance in the field of battle.

they entered into business arena as a manufacturer and exporter in the year 2000. Since then we have never looked back. By dint of our hard work and sincerity, we have been capable of expanding the confidence of highly dignified buyers of United Kingdom, USA and other members of European Union. Now they have a number of factories having 3000 workers and employees, working in an excellent atmosphere.