Design & Engineering

Design & Engineering Strength

Talented Pool of highly skilled structural engineers and designers
Follow Internationally Engineering & Design Practices
Using latest design codes & standards : MBMA, AISC,AISI,ASTM,AWS,BIS
Strength of designing simple warehouse building to complex steel structures : Power Plant, Shipyard, Girders and MIS Hanger for Air Force
We use world class software STAAD-Pro V8i; MBS, latest Auto CAD and Nesting Software's.

We follow Codes set in the latest manuals by:

Design/Engineering/Product Developement

Welcome to our ‘Knowledge Hub’ at INDSTAAL – a cutting-edge design and engineering office staffed by a team of experienced professionals. Equipped with advanced design software, including Staad-Pro, MBS BOCAD, and STRUCAD, we provide swift, precise, and cost effective solutions. Our expertise covers intelligent engineering support for pre and post order functions, offering fabrication and erection drawings. INDSTAAL adheres to global design codes like AISC, MBMA, AWS, and others, ensuring top-notch pre-engineered buildings worldwide. Our commitment to research and development positions us as leaders, consistently introducing innovative ideas and products to the market

DEFINITION

The building comprises columns, rafters, bracing, connection clips, roof purlins, wall girts, roof, and wall sheeting, anchor bolts, flashing, trims, etc.
The main structure consists of single or multiple gable interior rigid frames with rigid or 'post-and-beam' frames at the endwalls.
Standard roof slopes: 0.5 or 1.0 vertical rise to 10 horizontal run, with custom slopes available.
Sidewall steel line is the inside vertical surface of sidewall sheeting.
Building width is the distance between steel lines of opposite sidewalls, excluding Lean-To buildings.
Building length is the distance between steel lines of opposite endwalls, excluding endwall Lean-To buildings.
End bay length is from the outer flange of endwall columns to the center line of the first interior frame.
Interior bay length is between the center lines of two adjacent interior rigid frame columns.
Building eave height is from finished floor level to the top of the eave strut at the sidewalls steel line.
Building clear height is from finished floor level to the bottom of the end plate of the rafter at the knee.

STANDARD STRUCTUREAL FRAMING SYSTEM

CS Buildings:

Clear Span buildings have a gable roof with vertical sidewalls and endwalls. Interior bay frames are clear span rigid frames without interior columns.

MS Buildings:

Multi-Span buildings have a gable roof with vertical sidewalls and endwalls. Interior bay frames are rigid frames, typically with tapered exterior columns, tapered rafters and square tube or built-up interior columns.

SV Buildings:

Lean-To buildings consist of outer sidewall columns and simple span rafters attached to the sidewall columns or the endwall posts of the main building. Lean-To columns are of constant depth. Lean-To rafters may be tapered or of constant depth.

LT Buildings:

Space Saver buildings have a gable roof with vertical sidewalls and endwalls. Interior bay frames are clear span rigid frames having constant depth columns and tapered rafters, typically with horizontal bottom flanges.

MG Buildings:

Multi-Gable buildings have a roof with two or more gables and vertical sidewalls and endwalls. Interior bay frames are rigid frames typically having tapered exterior columns, tapered rafters, and built-up interior columns.

STANDARD FRAMING FEATURES

Main Frames:

Typically constructed with tapered or constant depth columns and rafters.

Rigid Frame Spacing:

For Clear Span (CS) and Multi-Span (MS) buildings, rigid frames are commonly spaced 6000 mm to 10000 mm, center line to center line.

Outside Flanges:

Outside flanges of CS and MS rigid frame columns are inset 200/250 mm from the sidewall steel line for by-pass girts. SV rigid frame columns have outside flanges flush with the sidewalls steel line.

Top Flanges:

Top flanges of all rigid frame rafters are positioned 200/250 mm below the bottom of the roof sheeting.

End Frames:

End frames are "post-and-beam" (P & B) loadbearing frames. Endwall girts are flushframed into the webs of endwall posts. Optional rigid frames may be used at building ends.

Endwall Post Spacing:

Endwall posts are typically spaced at 6000 mm. Other spacing may be used based on building width and endwall openings. When not divisible by 6000 mm, interior spacing of endwall posts is typically maintained at 6000 mm with two equal end spacings smaller or larger.

Sidewall Girts:

For CS and MS buildings, sidewall girts are bypassed to the outer flanges of exterior columns and lapped at interior frames. For SV and LT buildings, sidewall girts are flushframed, aligning with the outer flange of exterior columns.

Bottom Flanges of Roof Purlins:

Attached to the outer (top) flanges of rafters Purlins are lapped at all interior frames in all structural framing systems.

BUILDING COMPONENTS

Frames:

Columns and rafters of rigid frames are tapered built-up "I" sections, with interior columns of multi-span frames potentially being square tube sections.

Connections:

All rigid frame connections are bolted, with welded end plates for anchoring and member- to-member attachment. Pre-punched holes or welded clips are provided for various components.

End Frames:

Load-bearing "post-and-beam" (P & B) end frames can be constructed from cold- formed channels, hot rolled sections, or built-up welded plate sections.

Purlins and Girts:

Pre-punched cold-formed "Z" shaped sections, 200/250 mm in depth with stiffened flanges.

Eave Struts:

Pre-punched cold-formed "Z" shaped sections, 200/250 mm in depth with 65/75 mm stiffened flanges. Serves as a structural bracing member and transition point for walls & roof sheeting.

Panels:

Roll-formed to a maximum practical length (generally 12000 mm) to minimize field end laps.

Roof and Walls Panel:

Profile "S," a roll-formed panel with 4 major high ribs and 12 minor ribs, covering a width of 1000 mm. The lapped major rib has a siphon break, and the panel has an extended bearing leg for stiffening during installation.

Roof Panel End Lap:

Minimum end lap of 125 mm over purlins, fully protected from siphon action by an end lap mastic.

Wall Panel Lapping:

Same side lapping as roof panels, with an end lap of 125 mm over the girts. Generally, no side or end lap mastic is required.

DESIGN

CODES

Frame members (hot rolled or built-up) are designed in accordance with the American Institute of Steel Construction (AISC): Manual of Steel Construction, Allowable Stress Design/IS Codes.
Cold-formed members are designed in accordance with the American Iron and Steel Institute (AISI): "Cold- formed Steel Design Manual.”
All welds are designed in accordance with the American Welding Society (AWS): "Structural Welding Code - Steel".<br>Loads are applied in accordance with the requirements of the Metal Building Manufacturers Association (MBMA) of the USA: "Low Rise Building Systems Manual/IS- 875".
Other codes can be accommodated if specified.

LOADS

The building is designed to withstand the dead load (DL) of the structure plus a specified live load (LL) and wind load (WL). Auxiliary (Collateral) loads, if any, must be specified by the customer at the time of request for quotation.
When snow load is of concern, the customer will specify the snow load where applicable, in accordance with local codes. Load combinations shall be in accordance with the requirements of the "Low Rise Building Systems Manual" published by MBMA or as per IS Code.
Other loads and load combinations can be accommodated and must be specified at the time of request for quotation.

Design & Engineering

Design & Engineering Strength

Design/Engineering/Product Developement

DEFINITION

STANDARD STRUCTUREAL FRAMING SYSTEM

CS Buildings:

MS Buildings:

SV Buildings:

LT Buildings:

MG Buildings:

STANDARD FRAMING FEATURES

Main Frames:

Rigid Frame Spacing:

Outside Flanges:

Top Flanges:

End Frames:

Endwall Post Spacing:

Sidewall Girts:

Bottom Flanges of Roof Purlins:

BUILDING COMPONENTS

Frames:

Connections:

End Frames:

Purlins and Girts:

Eave Struts:

Panels:

Roof and Walls Panel:

Roof Panel End Lap:

Wall Panel Lapping:

DESIGN

CODES

LOADS

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