CAD-as built plans of buildings based on buildings
surveys and measurements
What can we do for you?
Building surveys used to provide the basis for CAD
plans, CAD elevations and CAC sections!
In the case of floor plans this means recording,
storey by-storey:
all rising building parts ( load-bearing and
non-load-bearing walls, columns, piers etc.)
all openings (wall openings, doors including
door stops, windows, slits etc.)
all staircases (including their dimensions), of
vaults, roof constructions, roof top elements and dormer windows
all basement light shafts, external staircases
and ramps, entrance roofs and other part roofs,
all upstand and downstand beams and all wall
piers
all recesses and projections in the external
surfaces of the building
all roof lights
all chimney stacks
all roof projections etc.
and documenting these graphically (including
“cut”, “concealed” and “projected” lines and entering the section lines),
with dimensioning in accordance with ÖNORM (including, among other aspects,
ceiling heights, window opening and parapet heights as well as door heights,
at a scale of 1:100.)
In the case of elevations recording of all data that
are of relevance for the particular building elevations such as:
all external surfaces including their
projections and recesses
all windows and doors including their
subdivisions
all roof top elements
all chimney stacks etc
and documenting them graphically (including
various kinds of hatching to indicate the materials used for the different
surfaces), at a scale of 1:100.
In the case of building sections recording all data of
relevance for the defined section axes
as well as documenting them graphically
(including different hatchings and various detail revisions)
using dimensioning in accordance with ÖNORM
all overall dimensions and all detail
dimensions such as
finished floor level
storey heights
clear floor-to-ceiling heights
eaves and ridge heights etc. at a scale of
1.100.
The working methods we employ depend on the nature of
the existing material
CAD plan in accordance with the relevant guidelines,
with complete on-site survey:
As built plans according to the CAD guidelines
for construction of the Federal Ministry for Economics or the CAD guidelines
of the municipal authority of the City of Vienna.
Here the entire building is recorded and
surveyed anew.
In addition to the plan contents outlined above
lintel heights, parapet heights (including records of any suspended ceilings
etc) rainwater downpipes, large ventilation ducts, radiators, groups of
chimney stacks, changes in level of ceiling slabs, as well as fixed objects
are measured and entered in the plans.
Further information such as fittings, staff
occupancy including telephone extensions, details of building services in
the areas of heating ventilation air conditioning and sanitation, IT cabling
etc. can also be compiled and recorded following prior agreement.
Digital photos made in the course of examining
the building for general purposes of documentation or to integrate the plans
in a FM system represent a further possible option.
Floor area tables including CAD room lines with
complete on site survey
Here the entire building is surveyed and the
result is presented in the form of lists of usable floor areas (tables) in
accordance with ÖNORM or DIN, or as a CAD plan with space polylines and
official room designations (vector graphics).
The official room designation details include a
room number, room name, the floor covering, the floor area and the length of
the room perimeter.
The results represent the current state of the
building. Where required, if the FM system used has an integrated Access or
Excel interface, the room data can be directly transferred to the FM system.
The same applies to the CAD data.
CAD as built plans on the basis of scanned material:
The existing paper as-built plan is scanned
and, depending on the agreements reached about the level of precision
required, can be equalized where necessary and thus forms the basis for
further CAD processing.
In CAD the scan file is given a backing (pixel
graphics) and FM space polylines are entered and the FM designations
inserted (vector graphics).
Existing room designations are taken over and
include a room number, room name, floor finish, floor area, and length of
room perimeter. Where such designations or certain details of them are
missing blank room designations are used.
At this quality level no visual checks are
carried out on site, i.e. the data are taken over as found in the scan. The
accuracy of the areas including the room designations is therefore dependent
solely on the quality of the scanned as built plan.
In addition to the range of services described
above a visual check on site can also be carried out, in the course of which
any discrepancies in the configuration of spaces and / or in the official
room designations, room numbers, room names, floor finishes can be noted and
integrated in corrected form in the CAD plans.
CAD- plan quality from CAD plan material:
An existing CAD as-built plan is taken over in
a vector data format (e.g. dxf, dwg or as agreed) and thus forms the basis
for further processing. Polylines are entered and, where lacking, blank room
designations are inserted. These contain placeholders for room number, room
name, floor covering, floor area and perimeter lengths. Existing official
room designations are transferred to the room designation format. Existing
windows, doors, openings and stairs are integrated.
Where agreed plan contents that are not
required such as superfluous layers, blocks, symbols etc can be purged.
In addition to the services outlined above a
visual control on site can also be carried out in the course of which any
discrepancies in the configuration of rooms and/or official room
designations, room numbers, room names, floor finishes can be noted and
integrated in corrected form in the CAD plans.
CAD plan quality from paper plan material:
An existing paper as-built plan is transferred
to CAD (i.e. copied) and forms the basis for further processing.
When using existing dimensioned paper plans the
room boundaries are drawn according to the given dimensions. Measurements
are made from the paper plan only where dimensions are missing. If the
window, door and opening sizes are included in the existing as-built plans
these are also taken over and drawn with the degree of accuracy found in an
as-built/planning application drawing.
Existing grids,
staircases with riser and tread dimensions, sanitary facilities and the
dimensioning itself are also taken over.
Polylines are drawn and blank FM designations –
if missing - are inserted, existing FM designations are taken over and
include room number, room name, floor finish, floor area and length of
perimeter length.
In addition to the
services outlined above a visual on-site check can be carried out, in which
any discrepancies in the spatial configuration and/or in the official room
designations, room numbers, room names, or floor finishes are noted and
subsequently incorporated in corrected form in the CAD plans.
Competence and quality from two different worlds of building offer you a decisive advantage!
