Operation Report for Demolition & Rock Excavation

An operation report is the central document for the structured tracking of work in concrete demolition, special demolition, and rock excavation. It transparently records what was carried out with which equipment, under which boundary conditions, and with what result. For projects using equipment from Darda GmbH—such as concrete demolition shears, hydraulic rock and concrete splitters, hydraulic power units, or hydraulic demolition shears—the operation report provides a robust basis for quality assurance, occupational safety, cost review, and the technical evaluation of methods.

Definition: What is an operation report

An operation report is a structured, timely documentation of a specific work operation. It typically covers the description of the construction or demolition section, the methods and tools used, key measurement and operating data, safety-related notes, environmental aspects, as well as a summary assessment of progress and deviations. In contrast to a purely administrative daily report, the operation report is technology-oriented: it explains how equipment such as concrete demolition shears or hydraulic splitters was actually used, which material properties were present (e.g., reinforcement ratio, concrete compressive strength class, rock description), and what performance was achieved under the given conditions.

Structure and mandatory components of an operation report

For high evidential value, the operation report follows a clear structure. It begins with location, date, team and responsibilities, then describes the work objective and the initial situation, lists the tools and power packs used including operating parameters, documents the workflow, results and anomalies, adds evidence such as photos or sketches, and concludes with an evaluation including lessons learned and upcoming actions.

Project and operation data: asset, section, date, times, weather, contacts, approvals.
Initial situation and objective: description of the structural component or rock mass, material properties, access conditions, assets to be protected, target condition (e.g., defined separation joint, removal quantity, noise corridor).
Equipment used: device designation and type (e.g., concrete demolition shear, hydraulic splitter, rock wedge splitter, hydraulic power packs, hydraulic demolition shear, Multi Cutters, steel shear, cutting torch), carrier-mounted or handheld tool, accessories.
Method and operating data: working pressure, oil temperature, displacement/flow rate, cycle times, drilling pattern and hole diameter for splitting, cutting sequences for shear work, load cases.
Occupational safety: brief hazard analysis, safety and exclusion zones, dust protection and noise control, load securing, briefing.
Workflow: sequence of steps, cutting or splitting order, removal, intermediate checks.
Results and quality: produced separation surfaces, edge quality, crack pattern, dimensional accuracy, tonnages, cycle productivity, disruptions.
Environmental aspects: leakage prevented, retention and filtration, waste fractions, recycling routes.
Photo documentation and sketches: location sketch, markings, before/after photos with scale.
Evaluation and actions: target achievement, deviation analysis, optimizations, open items.

Objectives and benefits in concrete demolition and special demolition

A precise operation report links technical execution with proof of performance. It supports quality assurance by documenting the suitability of a chosen method—e.g., controlled separation with a concrete demolition shear instead of a percussion hammer—under real conditions. It also supports ongoing planning, because performance values (e.g., meters of separation cut per hour, split depth per stroke) can be used for subsequent takt planning. Finally, it increases safety: recurring risks become visible and can be systematically reduced with documented countermeasures.

Relation to equipment and methods: concrete demolition shears and hydraulic splitters in focus

For separating, opening, and deconstructing reinforced concrete members, concrete demolition shears provide a clear, low-vibration method with good edge quality. The operation report should record, among other things, member thicknesses, reinforcement content, gripping and cutting sequences, the required cycle times per cut, and the maximum jaw opening widths achieved. For massive, high-compressive-strength structures or natural stone, hydraulic splitters enable low-vibration widening along defined drilling patterns. Here, bore diameter, hole spacing, wedge positions, pressure levels, and the observed crack propagation direction are decisive. Both methods benefit from cleanly documented hydraulic data of the hydraulic power packs used, as well as information on tool wear monitoring.

Measurement and key values that make the difference

Hydraulic parameters: working and return pressure, temperature, flow rate, pressure drop under load.
Material data: concrete compressive strength class (e.g., C-class), reinforcement ratio, rock type and discontinuities, moisture.
Process values: cycle time per cut/split, linear productivity, drilling meters, wedge cycles, tool change intervals.
Quality indicators: flatness and breakout size at separation edges, crack propagation, dimensional tolerances.
HSE aspects: dust and noise measurement points (if available), exclusion zones, visual inspections.

Photo documentation and sketches as evidence

Photos with fixed reference points and dimensions enhance traceability. Useful are overview shots of the component, detail photos of separation surfaces or crack patterns, markings of the drilling pattern, as well as before/after sequences. Sketches complement where photos allow perspective errors (for example, on downstand beams and hard-to-access voids). A short caption per image facilitates later evaluation.

Workflow in the report: from preparation to handover

Preparation

Check approvals and plans, locate utility lines, define protected and exclusion areas.
Justify tool selection: e.g., concrete demolition shear for a deliberate separation joint on a reinforced concrete column; hydraulic splitter for a massive foundation with limited vibration tolerance.
Equipment check: visual inspection, tightness, pressure test, function test of the hydraulic power pack.

Execution

Document the sequence of steps: cutting or splitting directions, order, load redistribution.
Record measurements: pressures, cycles, temperatures, anomalies, tool wear.
Log safety measures: closures, briefings, change in the hazard situation.

Follow-up

Evaluate the result: goal achieved, quality ensured, deviations substantiated.
Record remaining work, cleanup, disposal and recycling streams.
Derive recommendations for the next takt stage.

Particularities by application area

Concrete demolition and special demolition

Focus on controlled separation, rebar cutting, edge quality, and low vibration levels. For concrete demolition shears, cutting sequences, grip positions, and rebar cutting operations must be documented; for hydraulic splitters, the drilling pattern and split path take center stage.

Building gutting and cutting

Tight spaces, building protection, and dust limitation shape the report. Lightweight partitions and installations must be identified, separating cuts and openings must be measured. Multi Cutters and hydraulic demolition shears are used additionally; their cycle productivity and cutting quality should be recorded.

Rock excavation and tunnel construction

Geology, stratification, water flow, and adjacent structures determine the approach. Rock wedge splitters and hydraulic splitters achieve controlled crack guidance; documentation includes rock description, wedge setting sequence, crack path, and follow-up checks of structural stability.

Natural stone extraction

Consistency of separation surfaces and gentle handling of the material are crucial. The report addresses yield, block specifications, split quality, and pauses for stress relaxation to maintain high natural stone quality.

Special operation

For critical infrastructure, contaminated sites, or media tanks (cutting torch), safety and environmental data must be documented in detail. Pressure relief, inertization, and clearance measurements are described only in general terms and always with neutral, non case-specific wording.

Other equipment in the context of the operation report

Hydraulic power packs: source of stable pressure and flow. Operating condition and deviations are recorded, as they directly influence the performance of shears and splitters.
Hydraulic demolition shears and Multi Cutters: versatile separation tools; documentation-relevant are cutting sequence, material mix, and the tool service life of the cutting set.
Steel shear: for heavily reinforced components or steel sections, cross-sections, number of cuts, and burr formation are important quality characteristics.
Cutting torch: operation reports note preparatory safety measures, cutting parameters, and post-treatment of cut edges.

Best practices for readable, evaluable documentation

Use consistent terminology and standardize recurring fields.
Record only necessary measurements, but do so consistently and comparably.
Provide photos with direction arrows, scale, and a short caption.
Explain deviations factually: cause, effect, action.
Always link performance values to boundary conditions (material, accessibility, weather).
Clearly mark equipment changes and parameter changes.
Document immediately after the work step to avoid memory loss.

Avoid common mistakes

Vague objective description: without a clear goal, success is hard to prove.
Missing parameters: pressures, cycle times, and drilling patterns are the basis for comparability.
Incomplete safety information: protection and exclusion areas and approvals must be traceable.
Unstructured photos: without reference points, images are only partially evaluable.
Mixing facts and assessment: first the facts, then the interpretation.

Data protection, safety, and legal notes

Personal data are limited to the necessary minimum. Safety and approval notes are documented factually and generally, without providing binding legal advice. If measurements or limit values are mentioned, this is done as technical information; legal requirements vary by project, location, and time and should be described generally in the project-specific documents.

Practical structure template for the operation report

Master data: project, section, date, times, contacts.
Initial situation: component/rock, material data, environment, objective.
Equipment/methods: e.g., concrete demolition shears, hydraulic splitters, hydraulic power packs; accessories.
Parameters: pressures, temperatures, drilling pattern, cutting and splitting sequences.
Occupational safety: hazards, protected/exclusion areas, briefing, approvals.
Process: sequence of steps, cycles, intermediate checks.
Results: quality, quantities, performance, waste/recycling.
Images/sketches: overview, details, markings.
Evaluation: target achievement, deviations, improvements, next steps.

Quality assurance and continuous improvement

The greatest value of an operation report arises from comparability. If reports are kept consistently across several sections or projects, key figures for concrete demolition shears and hydraulic splitters can be derived, such as typical cycle times per component thickness or optimal drilling patterns per rock type. These insights flow into planning, reduce risks, stabilize execution quality, and increase process safety in the next operation.