Technical

Technical Data

The award winning and patented Mantle Building System (MBS) is a hybrid of Stressed Skin Panels and regular Structural Insulated Panels (SIPs) systems. The System is used for external, internal and party walls, roofs, cellars and retaining walls.  It is:

Frameless:  There is no need for vertical down-stands for normal designs.  Apertures and Service penetrations can be inserted anywhere in a panel, even at a join and after the initial build completion, if required.  This increases the design scope.

Load-bearing: Loads are carried throughout the entire structure.  With no point loads, lintels are usually not needed.

Composite technology:  The composite nature of the system enables structures which are light in weight, yet exceptionally strong, durable and stable.

Standard performance details

Thermal Insulation

External walls and roof U Value: 0.10 or better R Value Metric: 10 R Value Imperial: 57
Internal walls U Value: 0.17 R Value Metric: 6 R Value Imperial: 34
Thermal Bridging NIL The System incorporates floors within the thermal shell.
Decrement Value 7 - 8

Standard Psi Values

Default psi W/mK Accredited psi W/mK MBS psi W/mK
Corner 0.18 0.09 0.029
Inverted Corner 0.00 0.00 -0.052
Sill 0.08 0.04 0.024
Jamb 0.10 0.05 0.029
Aperture Surround (=Lintel) 1.00 0.30 0.028
Intermediate floor 0.14 0.07 0.038
Flat roof 0.08 0.04 0.037
Pitched roof 0.08 0.04 0.079
Party wall roof 0.24 0.12 0.024

PassivHaus 90/90 Psi Values

MBS psi W/mK
Corner -0.0517
Inverted Corner 0.0180
Flat Roof -0.0274
Pitched Roof 0.0161

Acoustic Insulation

Party walls From 60dB
Internal walls From 50dB School Music Room Standard

Other

Air permeability About 1m3/m2 @ 50pa
Energy Requirements Reduced by up to 90%
Installation Speed 185 sq m or more wall run per 8 hours shift Operation on a 24/7 basis. No need to ‘dry in’. Project phases can run concurrently.
Light Weight 1/15th the weight of traditional build. 1/10th the weight of timber build with leaf of brick Reduced foundation costs: less excavation, cartaway, steel and concrete. Vertical extensions with existing structural support engineering.
Embedded Carbon Less than 30% of structural timber and concrete. 12% of brick. 0.7% of steel. Green Guide A+ NIL GWP. NIL ODP.
Appearance Any external finish, including directly applied render, brick, brick slips, timber etc. Total render-to wallpaper wall thickness of about 275mm. Approx. 10% extra accommodation space per footprint. No need to batten out or wrap/clad with insulated render. Most designs, storey heights and external finishes undertaken.
Strength At least 4 times stronger than engineered timber. Same compression strength as brick. 14m clear span floors (domestic loading 2kN+2kN).

Design Values

(i) Generic Design Values
Racking tests to BS-EN 594 Basic Racking Resistance: 6.51kN/m using steel angle brackets
5.25kN/m with treated timber sole plate
Floor Panel Bending Tests to BS-EN 380 Moment capacity: 5.68kNm long-term duration
Stiffness capacity EI :125x109 Nmm2
Ring Beam Bending to BS-EN 380 Bending moment: 6.3 x 106 Nmm
Bending stiffness: 323 x 109 Nmm2
Floor Panel Creep Tests to BS-EN 789 1.5mm at Total Load of 2kN/m (l/360 = 3.056mm)
Concentric Vertical Load 43kN per metre run, long term duration
Eccentric Vertical Load Tests to BS-EN 380 20kN per metre run, long term duration
Ring beam Vertical Load 80kN per metre run, long term duration

N.B. Design values above are generic for indicative use prior to detailed structural engineering assessment and calculations for Domestic Dwellings up to three and-a-half storeys

(ii) Specific Design Values
Racking tests to BS-EN 594 Basic Racking Resistance: 6.51kN/m using steel angle brackets
5.6kN/m with timber sole plate
Floor Panel Bending Tests to BS-EN 380 Moment capacity: 5.68kNm long-term duration
Stiffness capacity EI :125x109 Nmm2
Ring Beam Bending to BS-EN 380 Bending moment: 7.12 x 106 Nmm
Bending stiffness: 323 x 109 Nmm2
Floor Panel Creep Tests to BS-EN 789 1.5mm at Total Load of 2kN/m (l/360 = 3.056mm)
Concentric Vertical Load 70kN per metre run, long term duration
Eccentric Vertical Load Tests to BS-EN 380 30kN per metre run, long term duration
Ring beam Vertical Load 80kN per metre run, long term duration

N.B. These figures have been drawn from the results of comprehensive destructive testing conducted by BRE. A structural engineer familiar with the MBS may design higher and/or more complex buildings within these extended parameters only in particular instances.

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Mantle Panel Limited
Company No.  4255420 | VAT No. 908 9374 85 | Registered Address  21, Lodge Lane, Grays, Essex, RM17 5RY, England.