BIM for Contractor: beyond 3D

Alexander Kolpakov Director, BIM department PE, LEED AP, PMP

Agenda

• Introduction

• 3D model and coordination

• BIM to field

• Integrated 4D/5D BIM – Location Based Scheduling & Model Based Estimating

Salimus Consultancy JLT

• Established in 2010

• Based in Dubai

• Services:

- Sustainability certification (LEED, Estidama, BREAM)

- Commissioning

- Energy modeling

- Building Information Modelling

3D model

- Clash detection and coordination

- Shop drawings production

- Fabrication

- Digital Layout

Clash detection and coordination

Shop Drawings

Fabrication Revit Fabrication CAD MEP

Fabrication

Digital Layout

Integrated Workflow for Model based Estimating and Planning

Model based Estimating and Planning Workflow

3D model Model based

Quantities

Quantity based Construction

Schedule

3D 5D 4D

Model Based Quantities

Concrete

Rebar

Formwork

Cladding; Surface Finish

TOIs Takeoff Items

$/Qty

TOQs Takeoff Quantities

$/Qty

Resources $/Qty

Column ‘Type 1’

Equipment

Labor

Materials

2/3D Design 5D Cost 4D Time

Integrated Process Overview

Gantt Chart 4D Simulations

Procurement Demand

Cash Flow

Resource Graphs

Flowline

5D BIM

Location Based Quantities

Level 3

Level 1

Level 2

Location 800 m2

1000 m2

1000 m2 Location

Location

8 days

10 days

10 days

4D BIM Location Based Schedule

4D BIM Flowline diagram vs Gantt Chart

Flowline diagram

Model based Estimating and Planning Workflow

3D model Model based

Quantities

Quantity based Construction

Schedule

3D 5D 4D

Benefits of 4D & 5D BIM

Design variations are estimated within minutes

Faster and more effective processes

10% schedule compression

Increased cost control

Realistic Construction Schedules

Sub-contractors buy in

Avoidance of Schedule conflicts

Thank you!