Fig. 1:
Fig. 2:
Fig. 3:
Fig. 4:
Fig. 5:
Fig. 6:
Database of the service life and scopes and frequencies of repairs for masonry and prefabricated partitions (own work, and based on Marková’s study [2011])
| Masonry partitions | Lifetime (years) | Repairs | |
|---|---|---|---|
| Scope in percentage (%) | Frequency (years) | ||
| Masonry partitions | 100 | – | – |
| Lime plaster | 100 | Under 50 | 30 |
| Lime-cement plaster | 100 | Under 50 | 30 |
| Cement plaster | 100 | Under 50 | 30 |
| Gypsum plaster | 100 | Under 50 | 30 |
| Clay plaster | 100 | Under 50 | 30 |
| Thermal insulation plaster | 100 | Under 50 | 30 |
| Barite plaster | 100 | Under 50 | 30 |
| Prefabricated partitions | Lifetime (years) | Repairs | |
| Scope in percentage (%) | Frequency (years) | ||
| Plasterboard partitions | 100 | Under 50 | 30 |
| Fibreboard partitions | 100 | Under 50 | 30 |
Specification of requirements for the partition at various levels of project documentation (own work)
| Project documentation level | Partition type | Plaster type | Partition thickness |
|---|---|---|---|
| COS | 0 | 0 | 0 |
| PPD | 0 | 1 | 1 |
| CPD | 1 | 1 | 1 |
Distribution of undiscounted LCC components according to the individual stages of preparation of design documents (own work)
| Descriptive statistics measure | Acquisition price (EUR/m2) | IRL (EUR/m2) | Demolition costs (EUR/m2) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| COS | PPD | CPD | COS | PPD | CPD | COS | PPD | CPD | |
| Average | 67.1 | 56.3 | 50.5 | 73.2 | 59.6 | 53.8 | 15.1 | 12.9 | 16.9 |
| Maximum | 149.7 | 105.3 | 60.8 | 225.6 | 81.5 | 63.5 | 27.1 | 20.8 | 20.8 |
| Minimum | 36.6 | 36.6 | 39.1 | 42.8 | 42.8 | 42.8 | 5.5 | 5.5 | 11.4 |
| Standard deviation | 21.2 | 12.9 | 5.1 | 36.6 | 8.7 | 5.3 | 5.7 | 4.8 | 3.0 |
| Coefficient of variation | 32 | 23 | 10 | 50% | 14 | 10 | 38 | 37 | 17 |
Sample of masonry partition from the database (own work, based on ÚRS, a_s_, and Cemix [wall systém])
| Description | Simple partitions made of classic perforated bricks, tongue and groove joints with M5 mortar, brick strength up to P15, partition thickness 115 mm + 20 mm plaster thickness |
|---|---|
| Partition type | Masonry |
| Material type | Brick partition |
| Type of plaster | Lime-cement plaster |
| Base layer type | Acrylic-silicone primer |
| UoM | m2 |
| Acquisition costs | 43.4 EUR/m2 |
| Costs per one repair (according to Tab. 8) | 14.3 EUR/m2 (undiscounted) |
| Demolition costs | 11.7 EUR/m2 (undiscounted) |
| Total weight | 0.14331 tonne |
| MH total | 1.3 MH/m2 |
| Laboratory weighted soundproofing (Rw) | 46 dB |
| Fire resistance | EI 180 |
| Suitability for damp conditions | Yes |
| Partition thickness | 135 mm |
A schematic of possible combinations of masonry–base layer–standard plaster (own work, based on Cemix [wall systém])
| Base layer / masonry | Lime plaster | Lime-cement plaster | Cement plaster | Gypsum plaster | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Polymer-cement adhesive primer | Clay primer | Acrylic-silicone primer | Clay spraying | Lime spray | Cement spray | Polymer-cement adhesive primer | Clay primer | Acrylic-silicone primer | Clay spraying | Lime spray | Cement spray | Polymer-cement adhesive primer | Clay primer | Acrylic-silicone primer | Clay spraying | Lime spray | Cement spray | Polymer-cement adhesive primer | Clay primer | Acrylic-silicone primer | Clay spraying | Lime spray | Cement spray | |
| Burnt brick partitions | – | – | X | – | X | – | – | – | X | – | – | X | – | – | X | – | – | X | – | – | X | – | – | – |
| Unburnt brick partitions | – | – | X | – | X | – | – | – | X | – | – | X | – | – | X | – | – | X | – | – | X | – | – | – |
| Concrete block partitions | X | – | X | – | X | – | X | – | X | – | – | X | X | – | X | – | – | X | X | – | X | – | – | – |
| Ceramic block partitions | – | – | X | – | X | – | – | – | X | – | – | X | – | – | X | – | – | X | – | – | X | – | – | – |
| Calcium-silicate partitions | – | – | X | – | X | – | – | – | X | – | – | X | – | – | X | – | – | X | – | – | X | – | – | – |
| Cellular concrete partitions | – | – | X | – | X | – | – | – | X | – | – | X | – | – | X | – | – | X | – | – | X | – | – | – |
The scope of requirements for the individual properties of non-load-bearing partitions (own work)
| Soundproofing Rw (dB) | 35–74 - correction |
|---|---|
| Fire resistance | EI 15-EI 180 or N/A |
| Suitability for damp conditions | Yes/no |
| Partition thickness (mm) | 70-290 |
List of examined types of masonry partitions, plasters and base coat preparation (own work, based on ÚRS, a_s_)
| Types of masonry partitions | Types of plaster | Types of base coat preparation |
|---|---|---|
| Partitions made of burnt bricks | Lime plaster | Polymer-cement adhesive primer |
| Partitions made of unburnt bricks | Lime-cement plaster | Clay primer |
| Partitions made of concrete blocks | Cement plaster | Acrylic-silicone primer |
| Partitions made of ceramic blocks | Gypsum plaster | Clay spraying |
| Calcium-silicate partitions | Clay plaster (special) | Lime spray |
| Cellular concrete partitions | Thermal insulation plaster (special) | Cement spray |
| Concrete partitions for plasterless masonry | Barite plaster (special) | |
| Gypsum partitions for plasterless masonry |
Partition selected for CID (own work)
| Description | Partitions or simple partitions of concrete slip bricks on cement mortar, 120 mm thick + 20 mm plaster thickness |
|---|---|
| Partition type | Masonry |
| Material type | Brick partition |
| Type of plaster | Lime-cement plaster |
| Base layer type | Acrylic-silicone primer |
| UoM | m2 |
| LCC | 104.3 EUR/m2 undiscounted; 43.7 EUR/m2 discounted |
| Acquisition costs | 39.1 EUR/m2 |
| Costs per one repair (according to Tab. 8) | 45.4 EUR/m2 undiscounted; 4.51 EUR/m2 discounted |
| Demolition costs | 19.9 EUR/m2 undiscounted; 0.2 EUR/m2 discounted |
| Total weight | 0.147 tonne |
| MH total | 1.7 MH/m2 |
| Laboratory weighted soundproofing (Rw) | 44 dB |
| Fire resistance | EI 90 |
| Suitability for damp conditions | Yes |
| Partition thickness | 140 mm |
Sample of prefabricated partition from the database (own work, based on ÚRS, a_s_, and Heluz katalog)
| Description | Gypsum plasterboard partition with supporting structure made of simple steel profiles UW, CW simply sheathed with standard A board 12.5 mm thick, partition thickness 75 mm, profile 50, with insulation, EI 30, Rw up to 45 dB |
|---|---|
| Partition type | Prefabricated |
| Material type | Plasterboard partition |
| Board type | A 1 × 12.5 mm |
| UoM | m2 |
| Acquisition costs | 33.0 EUR/m2 |
| Costs per one repair (according to Tab. 8) | 19.4 EUR/m2 (undiscounted) |
| Demolition costs | 5.1 EUR/m2 (undiscounted) |
| Total weight | 0.02493 tonne |
| MH total | 0.02476 MH/m2 |
| Laboratory weighted soundproofing (Rw) | 45 dB |
| Fire resistance | EI 30 |
| Suitability for damp conditions | No |
| Partition thickness | 100 mm |
LCC results for the individual stages of documentation – COS, PPD, CPD (own work)
| Descriptive statistics measure | LCC discounted (EUR/m2) | LCC undiscounted (EUR/m2) | ||||
|---|---|---|---|---|---|---|
| COS | PPD | CPD | COS | PPD | CPD | |
| Average | 74.5 | 62.3 | 56.0 | 155.2 | 128.6 | 121.1 |
| Maximum | 172.6 | 111.8 | 67.3 | 402.3 | 178.0 | 144.7 |
| Minimum | 42.5 | 42.5 | 43.7 | 97.8 | 97.8 | 97.8 |
| Standard deviation | 24.3 | 13.3 | 5.5 | 57.1 | 16.8 | 11.1 |
| Coefficient of variation | 33 | 21 | 10 | 37 | 13 | 9 |
A schematic of possible combinations of masonry–base layer–special plaster (own work, based on Cemix [wall systém])
| Base layer / masonry | Clay plaster | Thermal insulation plaster | Barite plaster | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Polymer-cement adhesive primer | Clay primer | Acrylic-silicone primer | Clay spraying | Lime spray | Cement spray | Polymer-cement adhesive primer | Clay primer | Acrylic-silicone primer | Clay spraying | Lime spray | Cement spray | Polymer-cement adhesive primer | Clay primer | Acrylic-silicone primer | Clay spraying | Lime spray | Cement spray | |
| Burnt brick partitions | – | X | – | X | – | – | – | – | – | – | – | X | – | – | – | – | – | X |
| Unburnt brick partitions | O | O | O | O | O | O | – | – | – | – | – | X | – | – | – | – | – | X |
| Concrete block partitions | X | – | – | – | – | X | X | – | – | – | – | X | X | – | – | – | – | X |
| Ceramic block partitions | – | X | – | X | – | – | – | – | – | – | – | X | – | – | – | – | – | X |
| Calcium-silicate partitions | X | – | – | – | – | X | – | – | – | – | – | X | – | – | – | – | – | X |
| Cellular concrete partitions | – | X | – | X | – | – | – | – | – | – | – | X | – | – | – | – | – | X |
Correction of the weighted laboratory soundproofing according to ČSN 73 0532 (ČSN 73 0532 [730532])
| Dividing element | Side structure | Correction (dB) |
|---|---|---|
| Masonry wall | 4× heavy | 2 |
| 3× heavy, 1× light | 3 | |
| 2× heavy, 2× light | 4 | |
| 1× heavy, 3× light | 5 | |
| Masonry skeleton | ≥4 | |
| Prefabricated partition | 4× heavy | 5 |
| Rw ≤55 dB | 3× heavy, 1× light | 6 |
| 2× heavy, 2× light | 8 | |
| Prefabricated partition | 4× heavy | 6 |
| Rw ≥55 dB | 3× heavy, 1× light | 7 |
| 2× heavy, 2× light | ≥8 |