Security Measures Adopted for Brazilian

Implosions: pre-demolition simulation and

analysis, protective nylon screens against flying debris

and isolation of the area

ASI Demolition Analysis

A NEW Level of Realism:• Verify/Optimise demolition plan• Reduce cost from accidents• Multiple perspectives of the planned demolition• Anticipated footprint of collapsed structure• Accurate perimeters to protect neighboring

structures• Deconstruction stress analysis• Wind analysis of weakened structure prior to

demolition• Seismic vibration analysis of falling debris• 3D Graphics generated for presentations to client,

government & public.

• Increase Safety

ASI Demolition Simulation

Post-Demolition

Pre-Demolition Analysis

Forensic Analysis

Side-by-Side Comparison

Plan Evaluation:• Implosion• Pulling

• Wrecking Ball• Deconstruction

Hazard Assessment:• Seismic• Wind (Weakened Structures)• Surrounding Structures

Pre-Demolition Analysis Process

Site Assessment

Create 3D Model

Apply Weakening

Run Analysis

Recommendations

Seismic Vibration Analysis

Wind Analysis

Weakening Plan

Demolition Plan

Apply Demolition Scenario

Submit Final Results

Demolition

Santa Cruz Buildings

Santa Cruz Buildings

Real vs. Simulation

Hélio Gomes Prison

First simulation

4.04 Sec

5.92 Sec

2.31 Sec

Danger: Columns falling towards other structure

First simulation

1.62 Sec

Danger: To ensure structure doesn’t squat, a good portion of the bays should show failure within the bay.

Final simulation

Nylon screens

Technical specifications

Technical fabric consisting of monofilament High Density polyethylene-shaped meshes

Meshes of 1,5 x 1,5 mm ou 1,5 x 2,5 mm Density of 3,2 x 2,8 wires / cm Tensile strength longitudinal of 476 kg/m Tensile strength transverse of 410 kg/m

Frei Caneca Implosion

Area of isolation

Brazilian slum (favela)

Pamphlet reporting the population

Video of Frei Caneca Implosion

THANK YOU!!!