Measured Building Survey (LOD300 Equivalent) - Revit Model - Specification

This is to replace the standard LOD requirements for tender purposes as the standard LOD scale does not lend itself to existing BIM surveys.

The following information refer to the banding tables indicated on page 12-13 (Section 2.3) in

The RICS Measured surveys of land, buildings and utilities 3rd edition⁠

The tolerance values shown are for Sigma 1 X,Y and Z. The specifed level of detail required for each component is indicating by the band required. The tolerance allows us to simplify the model where appropriate to allow for Vertical and lateral deviation, while closely matching the raw data when possible. If you Want a lower or heigher level of detail, please call us for advice on 01332 898350 or fill out our specification document

here⁠

and send it back to spbuildingsurveys@solidpoint.co.uk.

External Walls (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Wall/Curtain Wall type modelled and identified as an overall thickness

Wall Finish Materials

Cornice

Plinths

Reveals

Vents larger than 300mm

Pipes and Ducts Larger than 150mm

Window/Door Lintels

Window/Door Sills

Items That Will Not Be Model

Fruit Swag ans minor architecural details

External Electrical Fixtures

Boot Scrapers

⁠

Internal Walls (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Wall type modelled and identified as an overall thickness Curtain Walls will be used where appropriate.

Items That Will Not Be Model

Finish Materials

Skirting

Coving

Dado rail

Reveals

Wainscoting/Paneling

Ornate Moulding/Decoration

⁠

Internal Floors (RICS Band D / Model to +/-10mm)

IItems That Will Be Model

Floor type modelled and identified as an overall thickness where measurable. Otherwise will be shown as a generic “50mm thick (assumed)” floor to allow for potential voids.

Ramps

Railings around voids

Items That Will Not Be Model

Finish Materials

Service Hatches

Floor Joists

Internal Drainage / Inspection

Modified Floor (to represent uneven floors)

Beams

⁠

Roof (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Roof type modelled and identified as an overall thickness where measurable. Otherwise it will be shown as a generic “50mm thick (assumed)”.

Finish Materials

Chimneys

Roof Lights

Large Vents

Truss System (if visible)

Purlins (if visible)

Soffit

Facias

Gutter

Rain Water Pipes & Solid Vent Pipe

Items That Will Not Be Model

Roof Anchors

Cowl

Gable Ladders

Joists

Furrings

Diagonal Bracing

Brackets

Noggins

External MEP

Minor External Pipework (>50mm ø)

⁠

Columns, Beams, Bracing and Grids (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Columns, Beams and Major Bracing modelled using correct profiles and attached to structural grid where appropriate. Revit Structural framing/columns used where appropriate

Haunches

Items That Will Not Be Model

Finish Materials

Brackets

Plates

Diagonal Bracing

Structural Connections

Nuts and Bolts

⁠

Ceilings and Bulkheads (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Modelled as plain with a generic 50mm thickness to identify potential ceiling void. With 50mm (assumed wall for vertical bulkheads)

Items That Will Not Be Model

Finish Materials

Ornate Moulding

Ceiling Joists

Mechanical Fixtures

Electrical Fixtures

Ceiling Grids

⁠

External Doors and Windows (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Modelled with basic generic families to show frames and glazing only, curtain walls will be used where appropriate.

As above with sills, heads, mullions, glazing bars and opening sections.

Finish Material

Internal Chamfers

Shutters

Items That Will Not Be Model

Plaster Internal Reveal

Internal Sills

⁠

Internal Doors and Windows (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Modelled with basic generic families to show frames and door leafs for doors, frames and glazing for windows, curtain walls will be used where appropriate.

Items That Will Not Be Model

Finish Materials

Internal Chamfers

Shutters

⁠

Stairs, Steps and Escalators (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Stairs modelled as surveyed, monolithic/non-monolithic

Items That Will Not Be Model

Finished Materails

Precise Handrail Profiles

Precise Balusters

Precise Tread profiles

Panelling

Precise Stringer Profiles

Precise Posts

Precise Nosing Profile

Precise Riser profiles

Support

⁠

Lifts (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Modelled using generic lift family showing core (possibly assumed if inaccessible) and lift opening

Items That Will Not Be Model

Finish Materials

Lift electrical Fixtures

Capacity Information

Lift Motor

Lift Pit

⁠

Immediate Site (Within 5m of Building Perimeter) (RICS Band E / Model to +/-25mm)

Items That Will Be Model

3D Topography modelled using Revit “topo surface”

As above with major surfaces (Roads, paving, grass etc.) shown as sub regions, Trees modelled as massing with overall height and canopy.

Finish Materials

Items That Will Not Be Model

Retaining Walls

Kerb edges

Steps

Tree Species info

Site Furniture

Service Covers

Railings/ fences

⁠

Services (Model to +/-25mm)

Items That Will Be Model

Rain water Pipes (RWP)

Solid Vent Pipes (SVP)

Manholes Covers

Finish Materials

Items That Will Not Be Model

Manhole Chambers Modelled

Invert Levels shown

Gullies

⁠

Fixtures, Furnishings and Sanitary Equipment (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Sanitary & Fire Places modelled as generic families, Fixed Base Units Represented with overall geometry.

Items That Will Not Be Model

Finish Materials

Finer Details

Flexible Parameters

⁠

External Walls (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Items That Will Not Be Model

Internal Walls (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Items That Will Not Be Model

Internal Floors (RICS Band D / Model to +/-10mm)

IItems That Will Be Model

Items That Will Not Be Model

Roof (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Items That Will Not Be Model

Columns, Beams, Bracing and Grids (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Items That Will Not Be Model

Ceilings and Bulkheads (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Items That Will Not Be Model

External Doors and Windows (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Items That Will Not Be Model

Internal Doors and Windows (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Items That Will Not Be Model

Stairs, Steps and Escalators (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Items That Will Not Be Model

Lifts (RICS Band D / Model to +/-10mm)

Items That Will Be Model

Items That Will Not Be Model

Immediate Site (Within 5m of Building Perimeter) (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Items That Will Not Be Model

Services (Model to +/-25mm)

Items That Will Be Model

Items That Will Not Be Model

Fixtures, Furnishings and Sanitary Equipment (RICS Band E / Model to +/-25mm)

Items That Will Be Model

Items That Will Not Be Model

Pipes (Not Modeled)