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Lignacrete 100 mm 7.3 N Coursing Blocks

Verified by manufacturer 6 months ago

Lignacite Ltd

Dense concrete blocks.

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+44 (0)1842 810678 Website

Application

Typical locations include:

  • The inner and outer leaves of external cavity walls.
  • Internal walls, including fire break walls.
  • Separating walls, including those conforming to Robust Detail party wall specifications.
  • Below ground.
  • Infill units to beam and block flooring.
  • Vertically reinforced walls – using hollow blocks.


For walls that are to be directly decorated, Paint Grade blocks should be specified.

Description

Lignacrete dense concrete blocks are robust and durable with a technical performance that will fulfil most applications. They are manufactured to BS EN 771-3 and are available in standard and paint grade (close textured for direct painting). High strength blocks up to 30N/mm² are available for demanding, loadbearing designs.


Features and benefits:

  • Capable of being finished with all recognised treatments, including plaster, drylining and render, as well as cladding treatments.
  • Long service life.
  • Removes the need for on-site cutting, which reduces waste and improves productivity.


Mortar:

Generally, the mortar type for work above ground level should be designation (iii) / Compressive Class M4. Stronger mixes may be required if blocks are used below ground. Consult manufacturer for details.


Movement:

Vertical movement joints should be considered in accordance with masonry design codes and the recommendations of Published Document PD 6697, at 6.0 — 7.0 metre spacings. In areas of increased stress, such as above and below openings in external walls, the blockwork may need to be reinforced to restrain movement.


Design:

The design of walls should be in accordance with relevant design standards including BS 8103-2, BS EN 1996-1-1 and the requirements of the Building Regulations.

General information

Color

Grey

Finish

Textured

Material

Concrete

Shape

Rectangle

Length

440 mm

Width

100 mm

Height

215 mm

Uniclass

Pr_20_93_52_01 Aggregate concrete blocksPrimary

CAWS

E60/297 Proprietary infill blocks

F10/18 Concrete facing blockwork

F10/355 Concrete common blockwork

Product range

Coursing Block Range

Specification data - Aggregate concrete blocks

Standard

To BS EN 771-3, BS EN 9001.

Block description

Coursing blocks.

Appearance

Medium grey in colour with a fine textured surface.

Configuration

Group 1.

Compressive strength

-

Mean value

7.3 N/mm².

Category

M4.

Thermal conductivity

1.33 W/m·K at 3% moisture content; 1.43 W/m·K at 5% moisture content.

Guidance for specification option:

Internal/external use.

Thermal resistance

0.075 m²K/W at 3% moisture content; 0.069 m²K/W at 5% moisture content.

Work sizes (length x width x height)

440 x 100 x 215 mm.

Tolerance category

D1.

Density

-

Net dry density

2000 kg/m³.

Reaction to fire

Class A1.

Moisture movement

<0.6mm/m.

Weighted sound reduction index, Rw

Plasterboard on dabs: 49 dB; Plaster finish: 51 dB; Paint finish: 48 dB.

Fire resistance

Non-loadbearing wall (criteria E1): 3 hours; loadbearing wall (criteria RE1): 2 hours.

Third-party certification

BSI Kitemark approved KM 09694.

Unit weight

5.8 kg.

Air tightness

No finish: 2.73 m³/hr/m²; Paint one side: 0.88 m³/hr/m².

Sustainability data

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

0.1 kg CO₂ eq/kg

Self declared

Literature

Coursing Blocks Range

Coursing Blocks Range

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