Chennai, Kingdom of Saudi Arabia and United States
Nissi Archistructural

Multidiscipline consulting under one delivery framework.

Core engineering, architectural and project-support services are organised as coordinated workstreams so clients receive one clear technical interface — from consulting through to construction when a project calls for it.

Civil & Structural Engineering

Analysis and design of steel and RCC structures, foundations, equipment supports, pipe racks, shelters and buildings.

  • Design basis, loading criteria and calculation reports
  • STAAD.Pro / ETABS / SAFE / SAP2000 analysis models
  • Steel member optimisation and serviceability checks
  • RCC foundation, pedestal and anchor-bolt design
  • Connection design inputs and constructability reviews
  • General arrangement, fabrication and erection drawing support

Industrial & PEB Engineering

Pre-engineered buildings, built-up steel members, crane systems, connection concepts, fabrication documentation and erection support.

  • Primary built-up columns and tapered rafters
  • Moment, shear, splice and base connections
  • Crane girders, mezzanines, platforms and stairs
  • Secondary steel, bracing and cladding support framing
  • Material take-offs, BOQs and drawing registers
  • Fabrication detailing and erection-sequence coordination

Architecture & Building Design

Planning, elevations, space optimisation, approvals support, interior concepts, renovations and coordinated building documentation.

Integrated building services: architecture, structural design, BIM coordination, interiors, façade concepts, BOQ support and construction-stage assistance — see examples on our Projects page.

BIM, CAD & Digital Delivery

3D modelling, multidisciplinary coordination, clash-led reviews, structural detailing, model-based drawing production and visualisation.

Digital engineering environment
STAAD.ProETABSSAFESAP2000SACSTekla StructuresAutoCADRevit / BIMPlant 3DPDMS / E3D / S3DCaesar IIAutoPIPE

Estimation, BOQ & Tendering

Quantity take-offs, BOQs, bid documentation, technical comparisons, tender support and cost-informed design development.

Codes & standards
  • IS 800, IS 875, IS 1893 & IS 456 for Indian projects
  • AISC 360 & ASCE 7 for international steel and loading requirements
  • ACI, AWS and applicable BS / EN provisions where specified
  • Saudi Building Code and client / EPC specifications for Kingdom projects

Project & Construction Support

Design management, review coordination, RFIs, shop drawing review, constructability input, site engineering and close-out support.

Specialist engineering
  • Temporary works — shoring, access platforms, spreader beams, lifting frames and construction load-transfer systems.
  • Equipment and dynamic foundations — static and rotating equipment foundations, vibration-control concepts and embedded-item coordination.
  • Structural assessment — existing structure checks, strengthening concepts, retrofit design and change-of-use verification.
  • Interfaces — coordination with process, piping, mechanical, electrical, geotechnical, architectural and construction disciplines.
01Define
02Design & Coordinate
03Verify & Issue

Our delivery model

01
Define

Confirm scope, interfaces, applicable codes, design inputs, assumptions and deliverable schedule.

02
Plan

Establish discipline responsibilities, information requirements, review gates and communication protocol.

03
Design

Develop coordinated models, calculations, drawings, schedules and quantity information.

04
Verify

Complete discipline checks, interface reviews, document control and issue-readiness assessment.

05
Support

Respond to comments, vendor queries, shop drawings, RFIs and construction-stage changes.

06
Close

Consolidate final deliverables, revisions, as-built information and design records.

Engagement options
Project-based consultancyDedicated engineering supportDesign partnershipPeer review and independent verification

Discuss your project with our team.