About Offshore Engineering Onshore Engineering Drawings & MTO As-Built Drawings Engineering Tools Our Team Scope of Expertise Pricing Work With Us Contact Us
Oil & Gas Engineering Consultancy · Chennai, India

Engineering
Excellence
for Oil & Gas

Boutique civil & structural engineering consultancy delivering offshore, onshore and detailed design services to the global O&G industry.

Contact Us → Explore Services Download Brochure
15+
Yrs Combined Expertise
6+
Engineering Disciplines
Global
Standards Compliant
$29
Per Hr / Activity
15+
Yrs Combined Expertise
Civil & Structural Engineering
6
Core Service Disciplines
Offshore · Onshore · Drawings · MTO
8+
Software Platforms
SACS · STAAD · Tekla · AutoCAD
6
Global Code Standards
API · AISC · BS · IS · DIN · Eurocode
Offshore oil and gas platform
15+
Yrs Team Expertise
About GalMan

Precision Engineering,
Expert-Led

GalMan Engineering Services is a specialised civil & structural engineering consultancy led by the Managing Director and a dedicated technical team — delivering offshore, onshore and documentation services to the global Oil & Gas industry with the agility of a boutique firm.

Offshore & onshore structural analysis using SACS V16, STAAD Pro, Foundation 3D — international codes API-RP2A, AISC, BS 5950, Eurocode & NORSOK
Detailed civil & structural drawings — GA drawings, RCC detailing, structural steel, as-built documentation using AutoCAD, Tekla & RebarCAD
Precise Material Take-Off (MTO) and Bill of Material (BOM) — highly offloadable, rule-based, quantity-driven deliverables
Vendor design support, technical review and drawing verification for equipment skids and package units
Contact Us →
Industries & Sectors We Are Equipped to Serve
Petrochemical
Refinery
Onshore Projects
Offshore Projects
EPC Projects
Vendor Design Support
What We Do

Our Core Services

Specialised engineering services across the full O&G project lifecycle — from concept to as-built.

Offshore Engineering
  • Fixed Jacket platform structural analysis — in-place, seismic, fatigue & pushover
  • Topside module & FPSO structural design and analysis
  • Lifting, loadout, transportation and installation analysis
  • Conductor, caisson and pile design
  • Structural member sizing and connection design per API-RP2A & AISC
  • Weight control and CoG calculations
  • Anode and cathodic protection layout support
SACS V16API-RP2AAISCEurocodeNORSOK
Onshore Engineering
  • Pipe rack, sleeper, and cable tray support structural design
  • Equipment support, skid base frame and vessel support structures
  • Foundation design — isolated, combined, pile cap & raft foundations
  • RCC & structural steel building design for process plants
  • Petrochemical, refinery and LNG plant structural packages
  • Wind and seismic load analysis per applicable international codes
  • Structural connection and anchor bolt design
STAAD Pro V8iFoundation 3DMAT 3DAPIBS
Drawings & MTO
  • General Arrangement (GA) drawings — civil & structural
  • RCC reinforcement detailing — columns, beams, slabs, walls & footings
  • Structural steel fabrication and erection drawings
  • Isometric and plan drawings for pipe supports and racks
  • IFC-ready drawing packages for construction issue
  • Material Take-Off (MTO) — concrete, rebar, steel, formwork
  • Bill of Material (BOM) compilation and reconciliation
AutoCADTeklaBricsCadRebarCADIFC-Ready
As-Built Drawings
  • Conversion of IFC drawings to final as-built status
  • Survey-verified mark-up incorporation for offshore platforms
  • As-built documentation for onshore process plant civil structures
  • Red-line drawing review and AutoCAD / BricsCad updating
  • 3D model updating in E3D, PDMS or S3D to match installed conditions
  • Final drawing register and transmittal management
  • Clash-free as-built record submission packages
AutoCADBricsCadE3DPDMSS3D
BOM & MTO Works
  • Concrete volume take-off by grade and pour sequence
  • Rebar tonnage and schedule by diameter and member type
  • Structural steel weight estimation and BOM preparation
  • Earthwork, excavation and backfill quantity calculation
  • Anchor bolt, grout, formwork and shuttering area take-off
  • Excel-based rule-driven MTO for fast procurement support
  • Cross-checking of vendor MTO against design drawings
BOMQuantity TakeoffExcel-BasedProcurement Support
Vendor Design Support
  • Structural adequacy check of vendor-supplied equipment skids
  • Drawing verification for vessels, heat exchangers and package units
  • Nozzle load review and local stress check on supporting structures
  • Interface drawing preparation for vendor-client coordination
  • Technical comment compilation and RFI response support
  • Design basis and vendor data sheet review for structural inputs
Design ReviewSkid & Package UnitsNozzle Load Check
Project Based Support
  • Dedicated engineering team allocated to your project for its full duration
  • Scheduled manhours with milestone-based deliverable planning
  • Integrated support across analysis, design and documentation phases
  • Progress tracking, weekly status reports and drawing register management
  • Flexible team scaling — ramp up or down based on project phases
  • Priority SLA with guaranteed turnaround on critical deliverables
Dedicated TeamMilestone DeliveryScheduled Manhours
Collaborate & Partner
  • Sub-contracting partnership with EPC and EPCM companies for design activities
  • Design offloading support — overflow packages handled with full confidentiality
  • White-label engineering services — we deliver under your company's templates
  • Long-term framework agreements for ongoing civil & structural design needs
  • Joint venture support for tendering and proposal development
  • Capacity augmentation for existing in-house engineering teams
Sub-contractingDesign OffloadWhite-LabelFramework Agreement
Scope of Expertise

What We Are Equipped to Deliver

Our MD-led team is experienced across a broad range of civil & structural engineering engagement types within the oil & gas industry.

Offshore · Jacket
Fixed Jacket Platform Analysis
Offshore Structural
In-place · Seismic · Lifting · Transport Analysis — SACS V16
Onshore · LNG
LNG & Process Plant Structural Design
Onshore Structural
Pipe Rack · Equipment Support · Foundations — STAAD Pro
Drawings · MTO
GA Drawings & MTO Packages
Documentation
IFC-Ready · RCC Detailing · Quantity Takeoff — AutoCAD
FPSO · Topside
FPSO Topside & Module Design
Offshore Structural
Module Structural Analysis · Steel Detailing — SACS + Tekla
Onshore · Pipe Rack
Petrochemical Pipe Rack Structures
Onshore Structural
Multi-Tier Rack Design · Load Analysis · AISC / Eurocode
As-Built · Documentation
As-Built Drawing Packages
Documentation
Survey-Verified · Final Installed Conditions — AutoCAD
Technology

Engineering Software & Tools

Our team is proficient in industry-leading software for 3D modelling, structural analysis, design and documentation across all O&G project types.

Modelling Software
E3D (AVEVA)
3D plant modelling & review
S3D (SmartPlant 3D)
Integrated plant 3D design
Tekla Structures
Structural BIM & detailing
AutoCAD
2D drafting & documentation
BricsCad
DWG-compatible CAD drafting
PDMS
Plant design management system
Design & Analysis Software
SACS V16
Offshore structural analysis
STAAD Pro V8i
Onshore structural design
Foundation 3D
Foundation engineering & design
MAT 3D
Raft & mat foundation analysis
NAVISWORKS
3D coordination & clash detection
RAM Connection
Steel connection design
Codes, Standards & Client Specifications
American Standards
API-RP2A · AISC · ASCE · ACI · AWS
European Standards
Eurocode 0–9 · EN 13480 · DIN
British Standards
BS 5950 · BS 8110 · BS EN codes
NORSOK Standards
N-001 · N-004 · N-006 · Offshore Norway
Russian Standards
SP · SNIP · GOST structural codes
ADNOC Specifications
DEP · ADNOC civil & structural standards
Saudi Aramco Standards
SAES · SAMSS · Engineering specifications
Our People

The GalMan Team

Our team is a balanced mix of senior and junior engineers with a combined detailed engineering design experience of 18+ years across civil & structural disciplines in the global oil & gas industry.

JN
J. Nathiya
Managing Director
M.E. (Structural Engineering)
⚙
Structural Engineering Team
Senior & Junior Engineers
Offshore & onshore structural analysis and design — SACS V16 · STAAD Pro V8i · Foundation 3D · MAT 3D
📐
Design & Drafting Team
Senior & Junior Designers
Detailed engineering drawings, 3D modelling and documentation — AutoCAD · Tekla · E3D · S3D · BricsCad · PDMS
Our Promise

Our Commitment to You

✦ ✦ ✦
"Every deliverable — analysis report, drawing package or MTO — is verified by our Quality Team using structured Design and Drawings Checklists before submission. Quality output, every time."
QA
Quality Output Assured
Quality Team · Design & Drawing Checklists
✦ ✦ ✦
"We respond to all messages and project requests within 24 hours and maintain transparent communication at every milestone — so you always know where your project stands."
24H
24-Hour Response Guarantee
Responsive & Transparent Communication
✦ ✦ ✦
"All project information, drawings and technical data shared with us are treated with strict confidentiality. Your intellectual property stays yours — always."
NDA
Full Confidentiality
NDA-Ready · Data Security Assured
Transparent Rates

Our Pricing

Cost-effective solutions without compromising quality. All rates are competitive and clearly defined.

Per Hour / Activity
Freelance Consultation
$29
per hour per activity
Structural Design & Analysis
Detailed Engineering & Drawings
Material Take-Off (MTO)
Vendor Design Support
Get Started
Per Drawing Sheet
Drawing Package
$35
per drawing sheet (A1 / A0)
GA & Construction Drawings
RCC Reinforcement Detailing
Structural Steel Drawings
As-Built Documentation
IFC-Ready Deliverables
Get Started
Project Retainer
Dedicated Support
Custom
tailored to project scope & duration
Dedicated Engineering Team Allocation
Scheduled Manhours per Month
Milestone-Based Delivery Plan
Priority Turnaround & SLA
Monthly Progress Reporting
Flexible Scope Adjustment
NDA & Confidentiality Agreement
Request Quote
Frequently Asked Questions
How quickly do you respond to messages? ▾
We respond to all messages within 24 hours. For urgent project requirements, write to us directly at contact@galman.in and we will get back to you promptly.
Do you work with international clients? ▾
Yes. We are equipped to serve clients across GCC, Southeast Asia, Europe, North Sea and India. All deliverables are provided digitally — location is no barrier. We also work under client-specific templates and standards including ADNOC and Saudi Aramco specifications.
What codes and standards do you follow? ▾
We work with American standards (API-RP2A, AISC, ASCE, ACI), European standards (Eurocode, DIN, EN), British standards (BS 5950, BS 8110), NORSOK (N-001, N-004, N-006), Russian standards (SP, SNIP, GOST), and major client specifications including ADNOC DEP and Saudi Aramco SAES/SAMSS. Our team is experienced across all these code regimes.
Can you handle large MTO/BOM packages? ▾
Absolutely. MTO and BOM works are a core offload service for us. We handle packages of any scale — from single structures to full plant quantity takeoffs.
Join the Team

Work With Us

Challenging Projects
Work on global oil & gas projects
MD-Led Mentorship
Learn and grow under industry expertise
Career Growth
Build skills across disciplines
Global Standards
International codes & client exposure
No Open Positions Right Now
We are a growing team. If you are a skilled structural engineer, CAD drafter or engineering analyst with O&G experience, we'd love to hear from you. Send your CV and we'll reach out when the right opportunity arises.
Submit Your CV →
Get In Touch

Contact Us

Whether it's a full structural study, a drawing package, an MTO takeoff or a CV submission — simply write to us and we will respond within 24 hours.

Write to Us
contact@galman.in
Send Email Now
Opens your email app · All communications are confidential
Email
contact@galman.in
We respond within 24 hours
Phone
+91-93443 38819
Mon – Sat · 9:00 AM – 6:00 PM IST
Office
Plot No.12, Door No.1/4, Sankar Raga
MG Nagar, 2nd Cross St, Ullagaram
Chennai – 600 091, India
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