Table book

Embedded tables

In de Elements help zijn veel tabellen opgenomen. Hier vind je een overzicht met een link naar de pagina waar de tabel opgenomen is.

• Emission coefficients of commonly used materials
• Guideline for frame percentage, depending on window area per material (ISSO 32)
• Predefined frame types (ISSO 8)
• Predefined glass types
• Values for standard clothing packages (NEN-EN-ISO 7730)
• Assumed activities linked to MET values (NEN 5067, tabel 1.1)
• Recommended equipment power values for offices and homes (ISSO 32)
• Installed power for lighting systems (ISSO 32)
• Guidelines for internal mass weight factors
• Types of ventilation systems (ISSO 51)
• Determination of the Cz value
• Characteristic Equivalent U-values for a floor
• Example at room level for mechanical exhaust and natural supply

Useful Additional Tables

Here are the translations of the tables you’ve included in your online help:

• Overview of menu items per module
• ODesign temperatures: cooling and heating
• Infiltration rates
• Ventilation rates

Overzicht menu-items per module

An overview of which input is possible in which module. In project settings, you can specify which module(s) you want to use per project.

Design Temperatures

The standard design temperatures for heating are defined based on the table below:

Heating Residential Function ISSO 51 (2023)

Heating Residential Function ISSO 51 (2017)

Heating Utility

Publications

 

Cooling

The standard design indoor temperatures for cooling are:

Space	Temperature (° C)
Heated	24
Unheated	28

Publications

Infiltration flow rates

Associated with specifying infiltration with the ventilation template.

Berekening qv;10 volgens ISSO 51

When the building does not comply with the new construction requirements of the Building Decree, the qv;10 value must also be filled in, and the infiltration is determined depending on whether the qv;10 value is less than or equal to 2.0 dm³/(s m² Ag) or greater than 2.0 dm³/(s m² Ag). If the qv;10 value is not known, enter a value of 0 in the “own qv;10” field, and Elements will calculate the infiltration qis according to ISSO 51. The year of construction must be specified in the building properties.

The airtightness must never exceed 200 liters per second per 500 m³ building volume, a requirement of the Building Decree.

For homes with balanced ventilation, a qv;10 value of 0.625 dm³/(s m² Ag) can be used, or 0.40 dm³/(s m² Ag) with proven very good sealing of joints and seams.

For homes with natural air supply and mechanical exhaust, a value between 1.00 and 1.43 dm³/(s m² Ag) can be used.

If the building complies with the new construction requirements of the Building Decree, the qv;10 value is between 0.30 and 2.00 dm³/(s m² Ag). Infiltration is determined based on the qv;10 value and the ventilation system of the home. Table 4.4 provides values for homes built after 2012 or renovated after that time, meeting the requirements of the Building Decree. Note that the qv,10,kar value is given per m² floor area, and qi per m² external partition structure.

Table 4.4: Values for the air volume flow rate infiltration qi in m³/s per m² external surface (external partition structure; including glazing and doors) depending on qv,10,kar and ventilation system for homes/residential buildings complying with the new construction requirements of the Building Decree (linear interpolation is allowed).

Explanation: In addition to structural influences (represented by the qv;10 value), the amount of infiltration is also influenced by the ventilation system. In systems with mechanical supply and exhaust of ventilation air, the rooms are in a pressure-neutral situation, making infiltration due to wind pressure easier. For systems A and C, all air comes from outside, and whether the air enters the rooms through infiltration or ventilation provisions doesn’t matter. In system B, mechanical ventilation air is supplied to the living spaces, which must be exhausted through natural means. The living spaces have a slight positive pressure that limits/prevents infiltration.

Publications

Berekening qv;10 volgens ISSO 53

The qv;10 value must be specified in dm³/(s.m² Ag).

When the building does not meet the new construction requirements of the Building Decree, the qv;10 value can be entered if known. If it is not known, enter a value of 0 in ‘own qv;10’, and Elements will calculate the infiltration qis according to ISSO 53. The year of construction must be specified in the building properties. These values are quite high, so verification of the calculated infiltration is necessary.

A guideline value for determining the qv;10 value is 200 dm³/s per 3000 m³ volume with very good double seam and gap sealing for offices.

When the building complies with the new construction requirements of the Building Decree, this value ranges between 0.2 and 1.0 dm³/(s.m² Ag) according to Table 4.5 ISSO 53. Infiltration is now determined based on the qv;10 value and the building height.

For buildings where the qv;10 kar value (as used in the EPC calculation) is known, the value of qis is taken from Table 4.5. Note that in Table 4.5, qv10,kar is given per square meter of floor area and the specific infiltration per square meter of facade area.

*Table 4.5: Values for specific infiltration air volume flow rate qis in m³/s per m² facade area (including glazing and doors).*

Publications

The calculation of qv;10 according to ISSO 57

The qv;10 value is not used for spaces calculated according to ISSO 57. Infiltration is determined based on guideline values provided in Table 3.4 ISSO 57.

The infiltration rate ni is determined using standard values from Table 3.4. For industrial buildings, the method given in Annex C can also be used. This applies to spaces with large openings and where the areas of these openings are known.

Publications

Ventilation rates

Attached to the ventilation template.

The calculation of ventilation flow rates is based on the tables below of the Building Decree 2012:

Bouwbesluit 2012

Publicaties

 

The calculation of ventilation rates is based on the following table from the Building Decree 2003:

Building Decree 2003

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