REHAU uPVC windows & doors.

B1.3.1

Buildings, building elements and sitework shall have a low probability of rupturing, becoming unstable, losing equilibrium, or collapsing during construction or alteration and throughout their lives.

B1.3.2

Buildings, building elements and sitework shall have a low probability of causing loss of amenity through undue deformation, vibratory response, degradation, or other physical characteristics throughout their lives, or during construction or alteration when the building is in use.

B1.3.3

Account shall be taken of all physical conditions likely to affect the stability of buildings, building elements and sitework, including:

• (a) self-weight
• (b) imposed gravity loads arising from use
• (h) wind
• (j) impact

B1.3.4

Due allowances shall be made for:

1. the consequences of failure,
2. the intended use of the building,
3. effects of uncertainties resulting from construction activities, or the sequence in which construction activities occur,
4. variation in the properties of materials and the characteristics of the site, and
5. accuracy limitations inherent in the methods used to predict the stability of buildings

B2.3.1

Building elements must, with only normal maintenance, continue to satisfy the performance requirements of this code for the lesser of the specified intended life of the building, if stated, or:

• (b) 15 years if: those building elements (including the building envelope, exposed plumbing in the subfloor space, and in-built chimneys and flues) are moderately difficult to access or replace, or failure of those building elements to comply with the building code would go undetected during normal use of the building, but would be easily detected during normal maintenance.
• (c) 5 years if: the building elements (including services, linings, renewable protective coatings, and fixtures) are easy to access and replace, and failure of those building elements to comply with the building code would be easily detected during normal use of the building.

E2.3.2

Roofs and exterior walls must prevent the penetration of water that could cause undue dampness, damage to building elements, or both.

E2.3.7

Building elements must be constructed in a way that makes due allowance for the following:

1. the consequences of failure:
2. the effects of uncertainties resulting from construction or from the sequence in which different aspects of construction occur:
3. variation in the properties of materials and in the characteristics of the site.

F2.3.1

The quantities of gas, liquid, radiation or solid particles emitted by materials used in the construction of buildings, shall not give rise to harmful concentrations at the surface of the material where the material is exposed, or in the atmosphere of any space.

F2.3.3

Glass or other brittle materials with which people are likely to come into contact shall:

1. if broken on impact, break in a way which is unlikely to cause injury, or
2. resist a reasonably foreseeable impact without breaking, or
3. be protected from impact.

G4.3.1

Spaces within buildings shall have means of ventilation with outdoor air that will provide an adequate number of air changes to maintain air purity.

G7.3.1

Natural light shall provide an illuminance of no less than 30 lux at floor level for 75% of the standard year.

G7.3.2

Openings to give awareness of the outside shall be transparent and provided in suitable locations.

H1.3.1

The building envelope enclosing spaces where the temperature or humidity (or both) are modified must be constructed to

• (a) provide adequate thermal resistance
• (b) limit uncontrollable airflow

H1.3.2E

Buildings must be constructed to ensure that their building performance index does not exceed 1.55.