Legislation

Within the framework of the legislation in force in Europe and Romania, there are rules that must be respected to ensure an adequate level of quality.

Below are the main regulations in force:

EN 12101-2 Systems for the control of smoke and hot gases Part 2: Specifications for natural smoke ̇and hot gas exhaust ventilators.

P 118-99 “Standard for fire safety in buildings,” as indicated in P118-99 and ORDER No. 27/N/ of 7.04.1999, was published in Building Bulletin No. 7/1999

MP 008-2000 manual on examples, details and solutions for the application of the provisions of the Fire Safety Standard P 118-99

OMAI 112-2014 as of 28.08.2014, it is mandatory that persons carrying out

installation and maintenance work on ventilation systems and installations for the evacuation of smoke and hot gases hold a permit issued by the National Centre for Fire Safety and Civil Protection.

OMAI 87-2010 Order of the Ministry of Internal Affairs No 112/2014, published in the Official Gazette 556 of 28 July 2014.

In addition, Smoke Hatches must comply with the technical regulations in the structural design of the buildings in which they are installed, in detail:

CR 1-1-3-2012 DESIGN CODE ASSESSING ACTIONS ON BUILDINGS (here)

In fact, the legislation imposes higher snow loads than other neighbouring European countries, which means that not all Smoke Hatches, even with CE marking, can be used in Romania.

Figure 1 shows that Romania has load values of up to 2.5 KN/sqm (250 kg/sqm) up to 1000 altitude above sea level.

Legislation

These loads are understood as snow on the ground, which must be reduced accordingly in the structural design phase depending on the roof conformation and depending on the presence or absence of other adjacent buildings.

In the formula we have:

s= ui Ce sk

where:

μi the formula coefficient of snow load on the roof (μi=0.80)

sk the characteristic value of snow load on the ground [kN/m2] at the site (from 1.5 KN

to 2.5 KN);

Ce coefficient of exposure of the construction on site (Ce=0,8);

example:

Bucharest sk = 2,0 KN/sqm

s= 200×0,8×0,8=128 kg/sqm

This means that the smoke hatch must open with a load of 128 kg/sqm.

EN12101-2 art.7.2.1.1 part of the mandatory CE marking for smoke hatches, provides classifications based on snow load at different levels, from SL250 to SL2000.

Snow Load (“SL”) is expressed in Pascal (10 Pa= 1 Kg/mp),

EN 12101-2 gives device ratings from 25 kg/sqm to 200 kg/sqm

In the example given above, a minimum classification of 128 kg/sqm (SL 1280) should be considered.

MIMA SMOKE OUT manufactures Smoke Hatches with a minimum classification SL1350 up to SL2000 because they are specifically designed for Romania.

Legislation provides for other restrictions on devices that mount wind deflectors, “very fashionable on the market”, imposing a minimum classification SL2000, because these devices accumulate more snow.

MIMA SMOKE OUT offers specialised engineering consultancy services to provide the customer with a quality product in

compliance with the legislation in force.

Contact us and we are at your disposal for a design solution that fits your case.