ENVIRONMENTAL and FENCE DESIGN

WATER MIST COVER

Water mist

With TNT of 50 pounds and Destex of equivalent weight and PBXN-109, it can be provided as droplet intensity of 70 gr/m3 as impulse and blast wave pressure value %40, %36 decrease for TNT, %43, %25 decrease for Destex, %49, %38 decrease for PBXN-109 (Source Naval Research Lab, US NAVY, Blast Mitigation using water mist test series)

 

BULDING HARD BARRIER

Hard barriers are designed between the area where the explosion is supposed to take place and the area to be protected. Depending on the shape and placement of these barriers, the bursting pressure may be absorbed.

In addition, hard barriers are used with the purpose of retaining the shrapnels scattered around the area during the explosion.

BARRIER DESIGN


Barrier design and explosion-proof fence design should be designed in areas where setback distance can be applied. Damage is minimized in areas where a minimum of 30 meters of setback distance can be applied

STRUCTURAL IMPROVEMENTS

WALL and WINDOW DESIGN

The exterior walls need to be designed as functional but in layers. It should not only be designed in this way, but also it is necessary that the details of the connectors to the carrier system of the wall that is formed are to absorb the intensity of the explosion.

In the buildings where the details of connectors and wall design cannot be changed, it needs to be strengthened against explosion and the materials like PU or PUREA need to be strengthened with kevlar, carbon fibers. Since the flexibility coefficient and tensile strength of these materials will be very high, the energy will be absorbed by the exterior walls and the damage that will occur in the building will be minimized.

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Wall covered with PU on the inside

Concrete designed with PP fiber

     

 

 

 

 

 

 

 

 

 

CARRIER SYSTEM DESIGN

On the left, the effect of an explosion on the building according to FEMA 427 is seen. Because the explosion is a sudden and unpredictable burden, the carrier systems of the buildings need to be strengthened.

Carrier system strengthening is carried out on the columns and beams and the cross strengthening elements are incorporated chemically into the building.  What is critical here is to create a strong, solid central core within the building and build a structure in which this system supports each other as it goes out.

The situation of a designed and chemically strengthened composite column after the explosion. The purpose of the carrier system improvement is to provide a strong column beam design that is elastic as possible and does not lose its bearing power at the same time without obtaining plastic deformations.

FIRE PROTECTION

Passive measures should be taken for the fire which is among the secondary effects that may occur after the explosion.

HUMAN EVACUATION PLAN AFTER THE EXPLOSION

It is necessary to create alternatives to the escape routes that become narrow or blocked after the explosion and to make alternative routes according to these plans in people-intensive areas.