Structural Steel Shop Drawings Services in Pakistan

You are building a factory in Faisalabad. A warehouse in Karachi’s industrial zone. A pre-engineered building in Lahore. Your structural engineer has produced design drawings showing member sizes and loads. But your steel fabricator cannot build from these alone. They need structural steel shop drawings—detailed drawings showing every connection, bolt size, weld length, and member dimension. Without proper shop drawings, steel members are cut wrong, holes are drilled in the wrong places, and connections fail. Consequently, fabrication waste increases, erection on site is delayed, and structural safety is compromised. At Ahmed Construction Company (ACCO), we provide professional structural steel shop drawings services in Pakistan that are accurate, fabrication-ready, and Tekla-modeled. For over 25 years, we have produced shop drawings for steel structures in textile mills, factories, warehouses, pre-engineered buildings, and industrial facilities for clients like Savour Foods and Gerry DNATA. From single-part drawings to NC files for CNC machines, our PEC-registered engineers deliver shop drawings that fabricators love.

What Are Structural Steel Shop Drawings?

Structural steel shop drawings (also called steel fabrication drawings or steel detailing drawings) are detailed technical drawings that steel fabricators use to manufacture steel components. Unlike structural design drawings (which show member sizes and loads conceptually), shop drawings show exactly: member dimensions (precise length, camber, skew), connection details (bolt sizes and grades, weld lengths and types), material specifications (steel grade, section type—W, C, L, HSS, plate), fabrication notes (cutting, drilling, welding procedures), assembly instructions (how pieces fit together), and erection marks (identification for site assembly). The shop drawing package typically includes: general arrangement (GA) drawings (overview of entire steel frame), single-part drawings (each individual steel member shown separately with all dimensions and marks), assembly drawings (sub-assemblies like roof trusses or crane girders), connection detail sheets (standard and custom connection details), and bill of materials (list of all steel sections, plates, bolts, and weld lengths).

In Pakistan, proper steel shop drawings are essential for: fabrication accuracy (CNC machines require digital files or detailed drawings), erection efficiency (clear assembly drawings prevent on-site confusion), quality control (each piece is traceable by mark number), project coordination (clash detection with other trades), and PEC compliance (shop drawings may be required for approval).

ACCO’s structural steel shop drawings services in Pakistan include: 3D Tekla modeling (for clash detection and visualization), detailed single-part and assembly drawings, connection design detailing, NC (numerical control) file generation for CNC machines, and coordination with architectural and MEP drawings. We serve steel fabricators, structural engineers, contractors, and project owners nationwide.

Who We Are: ACCO – 25+ Years of Steel Detailing Excellence

For over two and a half decades, Ahmed Construction Company (ACCO) has been the trusted provider of structural steel shop drawings in Pakistan. From our head office at Office 2, 3rd Floor, Bigcity Plaza, Gulberg-III, Lahore, and our operational hub in Karachi, we have produced shop drawings for steel structures across Lahore, Faisalabad, Karachi, and all major industrial zones.

Our clients include steel fabricators, structural engineering firms, contractors, and industry giants such as Savour Foods, Gerry DNATA, and industrial project developers. What sets us apart is our use of Tekla Structures software—the industry standard for steel detailing. We create fully detailed, 3D-modeled steel structures that allow us to detect clashes (before fabrication, not on site), generate NC files (for automated cutting and drilling), and extract accurate quantities (for procurement). Consequently, our shop drawings reduce fabrication errors and site rework.

Learn more about our Architectural Engineering capabilities and Modular BIM Modeling services.

Our Structural Steel Shop Drawings Services – Detailed Breakdown

We provide complete steel detailing services for all types of steel structures across Pakistan.

1. Tekla 3D Modeling for Steel Structures

We create detailed 3D models of your steel structure in Tekla Structures. The model includes: all steel members (columns, beams, bracing, rafters, purlins, girts), connections (bolted and welded—moment, shear, pinned), base plates, gusset plates, stiffeners, and anchor bolts. The 3D model allows clash detection (ensuring steel does not conflict with concrete, MEP, or architectural elements), visualization (client presentations), and accurate quantity extraction (for material procurement).

2. Single-Part Drawings (Member Drawings)

We produce single-part drawings for each individual steel member (e.g., a specific column or beam). Each drawing shows: member dimensions (length, depth, width, camber), material specification (section type, steel grade), all holes (size, location, quantity), end preparations (coped, mitered, straight), and a unique mark number (for identification on site). Single-part drawings are used by fabricators to cut and drill each member.

3. Assembly Drawings (Sub-Assembly Drawings)

We produce assembly drawings for sub-assemblies that are fabricated in the shop then transported to site: roof trusses, crane girders, stair strings, platform sections, and bracing assemblies. Assembly drawings show how individual members fit together, weld sizes at assembly, bolt locations, and the assembly mark number.

4. General Arrangement (GA) Drawings

We produce GA drawings showing the overall steel frame with all member mark numbers. GA drawings are used by erection crews on site: they show column locations (grid lines), beam connections (reference to detail sheets), bracing configurations, and part assembly sequence.

5. Connection Detail Drawings

Connections are the most critical part of any steel structure. We produce detailed connection drawings including: moment connections (welded flange plates, bolted webs), shear connections (single/double angle, end plate, seated), column base plate connections (anchor bolt layout, grout thickness, stiffeners), bracing connections (gusset plates, bolts, welds), and beam-to-beam connections (splice details, drift pins).

6. NC (Numerical Control) File Generation

For fabricators with CNC (Computer Numerical Control) machines, we generate NC files (DSTV format) directly from the Tekla model. NC files drive automated beam lines and drill lines: cutting members to exact length, coping ends, drilling holes accurately. NC files reduce fabrication errors and speed up production by 30-40%.

7. Bill of Materials (BOM) & Quantity Takeoff

We extract from the Tekla model: steel quantity by section (total weight of W sections, C channels, L angles, HSS), plate steel quantity (base plates, stiffeners, gusset plates), bolt quantities (count of each bolt size and grade), and weld lengths (total inches of weld by type). Fabricators and contractors use these quantities for procurement and cost estimation.

8. Pre-Engineered Building (PEB) Shop Drawings

For pre-engineered buildings (warehouses, factories, showrooms), we produce shop drawings for: main frames (tapered columns and rafters), secondary members (cold-formed or hot-rolled purlins and girts), bracing (rod or angle), crane girders, mezzanines, and connection details (bolted and welded).

9. Connection Design Verification

Our PEC-registered structural engineers verify that all connection details meet: AISC 360 (steel building code), bolt and weld capacities (strength checks), and seismic provisions (ductile detailing requirements for connections). We provide calculation reports for connections where required.

Comparison: ACCO vs. Typical Steel Detailers

Many freelancers offer “steel detailing” but lack advanced software or engineering knowledge. Here is why ACCO is different:

Feature	ACCO	Typical Freelancer / Detailer
Software	Tekla Structures (industry standard for steel detailing) + AutoCAD	Basic AutoCAD only – no 3D, no NC files
3D Modeling & Clash Detection	Full 3D Tekla model with clash detection against concrete, MEP, architecture	2D drawings only – clashes discovered during fabrication or erection
NC Files (DSTV)	Included – direct output to CNC beam lines and drill lines	Not available – manual hole marking, errors
Single-Part Drawings	Autogenerated from Tekla model – accurate, coordinated, each member has unique mark	Manual drafting – mark numbers missing, errors
Connection Detailing	Detailed moment, shear, base plate, bracing connections with bolt/weld specs AmericaUnknown – missing connection details
Engineering Verification	PEC-registered structural engineers review connections for AISC compliance	No engineering review – unsafe connections
Bill of Materials	Automatic extraction from Tekla – accurate quantities, steel tonnage	Manual takeoff from PDF – errors, waste
Fabrication Accuracy	NC files → CNC machines → ±1mm accuracy	Manual marking → errors, rework
Revisions	2 rounds of revisions included – model-based updates propagate to all drawings automatically	Charges extra – manual redrawing on each sheet
Turnaround Time	2-3 weeks for typical industrial building	4-6 weeks – manual drafting is slow
Client Support	Dedicated detailing coordinator (Mon–Sat, 9 AM – 6:30 PM)	Unreachable after payment
Nationwide Service	Lahore, Karachi, Faisalabad, all industrial zones	Local only

Our Step-by-Step Steel Shop Drawing Process

We make steel detailing accurate, coordinated, and fast. Here is how we work:

1. Step 1: Receive Design Drawings & Specifications – You send us structural design drawings (member sizes, loads, connection design). We also receive architectural and MEP drawings for coordination.
2. Step 2: Tekla Model Setup – We set up a Tekla project: define grids, create steel sections library, import reference files (architectural, MEP).
3. Step 3: 3D Steel Modeling – We model all steel members in Tekla: columns, beams, bracing, rafters, purlins, girts, crane girders, mezzanines, base plates, stiffeners, gusset plates, bolts, and welds.
4. Step 4: Connection Detailing – We detail all connections per design requirements: moment connections, shear connections, base plates, bracing connections.
5. Step 5: Clash Detection & Coordination – We run clash detection in Tekla/Navisworks: steel vs. concrete (anchor bolts, embedded plates, PT ducts), steel vs. MEP (pipes, ducts through steel beams), steel vs. architectural (steel members crossing clear height zones). We resolve clashes with design team.
6. Step 6: Shop Drawing Generation – We generate from Tekla: single-part drawings (each member), assembly drawings (sub-assemblies), GA drawings (overview), connection detail sheets, and NC files (DSTV for CNC machines).
7. Step 7: Engineering Review & PEC Stamp – A PEC-registered structural engineer reviews all drawings for code compliance (AISC 360) and connection safety. We stamp drawings where required.
8. Step 8: Delivery – We deliver: Tekla model (.tekla), shop drawings (PDF and DWG), NC files (DSTV), bills of materials (Excel). We include 2 rounds of revisions at no additional cost.

Why Steel Fabricators & Contractors Nationwide Choose ACCO

In Pakistan’s steel fabrication industry, poor shop drawings are a chronic problem. Fabricators receive vague sketches, leading to: incorrect member lengths (wasting steel), holes drilled in wrong locations (requiring rework or field modification), missing connection details (causing erection delays), and no NC files (manual marking is slow and inaccurate). Consequently, projects are delayed, costs increase, and stress rises.

ACCO has provided structural steel shop drawings in Pakistan for steel fabricators and contractors across Lahore, Faisalabad, Karachi, and other industrial zones. Our shop drawings are used by fabricators with CNC machines (who use our NC files) and by smaller shops (who use our detailed single-part drawings with hole dimensions).

Furthermore, we serve clients nationwide. From Lahore to Faisalabad to Karachi, we provide steel detailing for all industrial sectors: textile mills, warehouses, factories, pre-engineered buildings, and commercial structures. We also support steel fabricators working on projects in the UAE, UK, Saudi Arabia, Canada, and the USA.

Our integrated approach means we also provide architectural drafting and BIM modeling for complete project coordination. Explore our Architectural Engineering and Modular BIM Modeling pages.

By The Numbers: ACCO’s Steel Shop Drawing Track Record

• 2,500+ Single-part steel shop drawings produced.
• 500+ Assembly drawings produced (trusses, crane girders, platforms).
• 200+ Steel structures detailed (factories, PEBs, warehouses).
• 50,000+ Steel members detailed in Tekla 3D models.
• Zero Field-fit issues when NC files were used.
• 100% PEC compliance for connection designs.
• 25+ Years of continuous steel detailing practice in Pakistan.
• 2-3 weeks Average turnaround for typical industrial building.
• 2 Offices (Lahore & Karachi) covering all industrial zones.
• 5+ Tekla-certified detailers on our team.

Frequently Asked Questions (FAQs) – Structural Steel Shop Drawings

1. What is the difference between structural design drawings and shop drawings?

Structural design drawings (also called calculation drawings) show member sizes, loads, and overall dimensions—they answer “what size beam do I need?” Shop drawings show every connection detail, bolt location, weld length, and precise cutting length—they answer “exactly how do I make this piece?” Design drawings are for engineers; shop drawings are for fabricators. Both are needed.

2. Why do I need Tekla for steel shop drawings?

Tekla Structures is the industry standard for steel detailing because: it creates a 3D model so you can see clashes before fabrication, it automatically generates single-part and assembly drawings (saving weeks of manual drafting), it creates NC files for CNC machines (improving accuracy), and it extracts accurate material quantities. ACCO uses Tekla for all steel detailing projects.

3. Do you provide NC files for CNC beam lines?

Yes. From our Tekla models, we generate NC files (DSTV format) that can be directly loaded into CNC beam lines and drill lines. The NC file tells the machine: cut member to exactly this length, cope the end at these dimensions, drill holes at precise X,Y coordinates, and cut bolt threads. This eliminates manual marking errors and speeds up fabrication by 30-40%.

4. How do I get steel shop drawings for my building?

First, you need structural design drawings (member sizes, connection design from a PEC-registered structural engineer). If you don’t have design drawings yet, see our Architectural Engineering and structural design services. Once you have design drawings, send them to us—we will model in Tekla and produce fabrication-ready shop drawings.

5. What is architectural engineering, and how does it relate to steel detailing?

Architectural engineering ensures that steel structures coordinate with architectural finishes and MEP systems. During steel detailing, we check that: steel columns align with architectural wall finishes, steel beams do not reduce ceiling heights below acceptable levels, and steel members accommodate MEP penetrations (holes for pipes, ducts, cable trays). Learn more on our Architectural Engineering page.

6. What does a single-part drawing include?

A single-part drawing shows one individual steel member (e.g., column C-1 or beam B-2). It includes: overall length, cross-section profile, material grade, hole locations (size, type, quantity), end preparations (coped, beveled, straight), and a unique mark number (e.g., C1-2 for column 1, piece 2). Fabricators use single-part drawings on the shop floor.

7. How long does it take to produce steel shop drawings?

For a typical industrial building (50,000-100,000 sq ft), steel shop drawings (including Tekla modeling, clash detection, drawing generation, and NC files) take 2-3 weeks. For a smaller structure (1,000-10,000 sq ft), 1-2 weeks. Rush service available for an additional fee.

8. Can ACCO provide steel shop drawings for pre-engineered buildings (PEB)?

Yes. We have detailed pre-engineered buildings for warehouses, factories, and showrooms. PEB detailing includes: main frames (tapered columns and rafters), secondary members (cold-formed Z/C purlins, girts), bracing (rod or angle), mezzanine floors, crane girders, and connection details. Our detailing is compatible with major PEB manufacturers’ standards.

Get Fabrication-Ready Steel Shop Drawings – Choose ACCO

Your steel structure is only as good as its shop drawings. Poor shop drawings lead to: incorrect member sizes (steel waste), misaligned holes (field rework), missing connections (site delays), and safety issues. Therefore, investing in professional steel shop drawings is not a cost—it is an investment in fabrication efficiency and erection speed.

ACCO has been providing structural steel shop drawings services in Pakistan for over 25 years. We are trusted by steel fabricators, contractors, and industrial project owners. Our Tekla-powered process delivers 3D modeled, clash-detected, NC-file-ready shop drawings that fabricators can use directly on CNC machines.

We serve all major industrial zones nationwide: Lahore, Faisalabad, Karachi (SITE, Korangi, Port Qasim), Multan, Sialkot, Gujranwala. We also support international fabricators and contractors working on projects in Pakistan with headquarters in the UAE, UK, Saudi Arabia, Canada, and the USA.

Ready to get fabrication-ready steel shop drawings? Contact ACCO today. Your Tekla model and NC files could be ready in two weeks.

ACCO – Precision Steel Detailing. Since 1998.

Explore related services: Learn about our Architectural Engineering integration or view our Our Projects gallery to see our steel detailing work in action.