Method 05
Floor saw cutting in Abu Dhabi, Dubai & Al Ain
Walk-behind slab sawing for service trenches, movement joints, floor openings and pavement cutting. Long straight cuts at speed, on ground slabs and suspended floors.
Single pass, blade dependent
Fastest method per linear metre
Electric indoors and in car parks
Guided along a set line
Confirm against your own fleet before publishing
What it is
When to specify floor sawing
Floor sawing uses a walk-behind machine with a large diamond blade running on a fixed axle, cutting downward into a horizontal surface. It is by a wide margin the fastest method per linear metre, which is why it is the default for trenches, joints and long straight cuts across a slab.
The most common uses are service trenches for drainage and electrical routes, movement and control joints in new slabs, and cutting the perimeter of a floor opening before the section is lifted out. On industrial jobs across Mussafah, ICAD and Al Quoz it is also the method for cutting out damaged bays for replacement.
Depth is limited by blade diameter, and every extra 100 mm of cut depth needs a substantially larger blade and machine. Where the slab is thicker than a single pass can manage, we either cut from both faces or move to wire sawing, and we will tell you which at survey.
Floor sawing
Applications
What we use it for
Service trenches
Straight parallel cuts forming trenches for drainage, chilled water, electrical and communications routes through existing slabs.
Movement and control joints
Saw-cut joints in new slabs, timed against the pour so shrinkage cracking is controlled rather than random.
Floor openings
Perimeter cuts around stair, lift and riser openings, ready for the section to be lifted or broken out.
Bay replacement
Damaged or contaminated slab bays cut out cleanly to a square edge for replacement concrete.
Car park and roadway cutting
Asphalt and concrete cutting for repairs, ramp alterations, drainage runs and service crossings.
Demolition preparation
Slabs pre-cut into liftable sections so demolition proceeds by removal rather than by breaking.
Sequence
How the job runs
Set out the line
Cut lines marked from the drawing and agreed on site, with falls and levels checked where drainage is involved.
Scan the slab
GPR run along the cut line to locate reinforcement, post-tension cables and buried services before the blade goes in.
Cut in passes
Blade set to depth and the cut run in controlled passes, with water fed to the blade throughout.
Lift and clear
Sections lifted or broken out, slurry vacuumed and bunded, edges dressed and waste removed from site.
Site control
Post-tensioned slabs and why scanning is not optional
A large proportion of suspended slabs in Dubai and Abu Dhabi towers are post-tensioned. Cutting a post-tension cable releases stored energy instantly and can cause serious injury as well as structural damage that is expensive and slow to remediate.
There is no visual way to tell a post-tensioned slab from a conventionally reinforced one once it is finished. We scan every suspended slab before floor sawing, mark the cable runs on the surface, and set the cut line to clear them. Where the required cut cannot avoid a cable, we stop and refer it back to the structural engineer.
On ground slabs the risk is different but still real: buried drainage, electrical ducts and chilled water lines all sit under floors and rarely match the as-built drawing.
Related
Often quoted together
Concrete Slab Demolition
Suspended and ground slabs cut into sections and lifted out. Propped & craned →
Concrete Scanning
GPR survey and marked-up plan before any blade goes in. To 600 mm →
Concrete Slab Core Cutting
Downward coring through suspended and ground floor slabs. Ø25–600 mm →
Questions
Floor sawing questions
Around 500 mm in a single pass with a large blade, though most jobs sit well under that. Depth is directly limited by blade diameter, so cutting deeper needs a bigger machine rather than more time. Where a slab is thicker than one pass allows, we cut from both faces if accessible, or specify wire sawing instead.
Yes, but only after scanning. Post-tension cables carry stored energy and cutting one is dangerous as well as structurally damaging. We run GPR over the full cut line, mark cable positions on the surface, and set the cut to clear them. If the required line cannot avoid a cable, we stop and refer it back to the structural engineer rather than proceed.
Yes. We use electric and hydraulic machines indoors and below ground because petrol saws produce exhaust fumes that are unacceptable in enclosed spaces. Water is fed to the blade and slurry is vacuumed and bunded so it does not reach drainage gullies or lower levels.
The cut is bunded and a wet vacuum runs alongside the saw collecting slurry as it is produced. On finished floors we also sheet and protect the surrounding area. Slurry is collected into containers and removed from site rather than washed into the nearest gully, and disposal is included in the quoted figure.
Per linear metre, yes, which is why it is the default wherever the geometry suits it. A long straight cut on a horizontal surface is the fastest thing a diamond blade can do. The cost only rises when depth exceeds a single pass or when access forces a smaller machine into a job it is not sized for.
Send the drawings, get a fixed price
Mark the openings on a PDF or DWG and we come back within four working hours with a fixed quote, or a time for a free site survey.