Custom steel joists fabricated by Conrad, craned over an entire house from the street side and set into place

Service schedule

Services

Cutting, coring, demolition, and structural welding — scoped, scheduled, and executed by one sub.

Scope of work

Four trades, one contract

Most scopes we price touch more than one trade. A wall opening needs sawing, a lintel, and embeds. A bollard needs a core, fabrication, and installation. Conrad carries all of it under one contract, so nothing falls in the gap between subs and nobody waits on a second mobilization.

Straight wet-cut trench lines through a tilt-up warehouse slab, ready for the plumbing crew

C-01 · Cutting & sawing

Concrete cutting & sawing

Slab saws for trenches, panel removal, and road cuts. Track-mounted wall saws for door, window, and mechanical openings. Hand and chain saws where a rig won't fit or a corner has to stay square. Interior work is wet cut with slurry controlled at the blade, which is why we can cut in occupied buildings without shutting the floor down.

  • Slab / flat sawing for trenches and panel removal
  • Wall sawing for doorways, windows, and mechanical openings
  • Hand sawing for tight access, no overcuts
  • Wet cutting with slurry control in occupied buildings
See cutting & sawing
Rig-mounted core drill boring an 18-inch core at a parking garage door opening for a bollard installation

C-02 · Core drilling

Core drilling

Cored penetrations for plumbing, electrical, HVAC, and fire suppression, located to your drawing and drilled plumb. On waterproofed decks and finished surfaces where anchor bolts are off the table, we mount the rig on a vacuum pad instead. We've drilled cores to 18 in. diameter; anything bigger gets stitch cored. Slurry collection is standard on every hole, not an add.

  • Penetrations for plumbing, electrical, HVAC, and fire lines
  • Vacuum-pad mounting where anchors are prohibited
  • Diameters from 1/2 in. to 18 in.; larger by stitch coring
  • Slurry collection on every core
See core drilling
Sawn road panels being removed on a downtown Denver street to support a sewer line replacement

C-03 · Selective demolition

Selective demolition

Demolition that starts with a saw cut, so what comes out is exactly what the drawing says comes out. We separate the removal from the structure that stays, then take it down in controlled pieces. That covers road panel removal for civil scopes, like the sawn panels we pulled on a downtown Denver street for a sewer line replacement, and interior selective demo for tenant improvements.

  • Saw-cut separation before any removal begins
  • Road panel removal for civil and utility scopes
  • Interior selective demo for tenant improvements
  • Controlled debris handling and final cleanup
See selective demolition
Custom steel storage rack for masonry forms, too large to ship assembled, fabricated and welded onsite by Conrad

C-04 · Steel & welding

Structural steel & welding

Field welding and structural reinforcement, all positions, in occupied buildings and on open frames. Some assemblies are too big to ship: a storage rack, a run of custom joists. Those we fabricate and weld onsite. On fabricate-and-install scopes, one crew carries the work from shop drawing to final weld. No handoff, no second sub to chase.

  • Field welding and structural reinforcement
  • Onsite fabrication of assemblies too big to ship
  • Fabricate-and-install scopes, start to finish
  • Lintels, embeds, and connection steel for new openings
See structural welding

Specifications

Capability schedule

One table, every method. These are typical working ranges for the equipment we run, not guaranteed limits for every slab and every mix.

Capability schedule — typical working ranges
MethodTypical rangeBest for
Slab / flat sawingto ~12 in. typicalTrenches, panel removal, road cuts
Wall sawingto ~24 in. with track sawsDoorways, windows, mechanical openings
Hand / chain sawingto ~8 in. from one side, square cornersTight access, no overcuts
Core drilling1/2 in. – 18 in.+ dia., larger by stitch coringMEP and fire-line penetrations
Structural weldingfield and shop, all positionsReinforcement, embeds, fabrication

Typical method capabilities, not hard limits. Send your spec and we'll confirm the approach.

Industries

Who we work for

Forty years of combined trade experience, most of it spent as somebody's sub. We know what a PM needs from us: show up when scheduled, cut to the drawing, keep the area workable for the next crew.

General contractors

Openings, penetrations, and selective demo that sit on the critical path. We coordinate with your super, pre-task the work, and leave clean lines the framer and firestopper can build off without rework.

Mechanical & plumbing

Cores and trenches sized and located to your drawing, not to the nearest convenient spot. Penetrations come out plumb and to diameter, so pipe and duct go in the first time.

Fire suppression

Cored penetrations for standpipes, mains, and branch lines, drilled clean and true so your firestop system installs to its listing. Slurry contained, ceilings below protected.

Civil contractors

Road panel removal and sewer and utility support. We sawed and removed street panels in downtown Denver for a sewer line replacement; the panels came out on schedule and the trench crew went straight to work.

One contract

Scope it once. We cover the rest.

Send drawings or a scope description and we'll quote it. If it's urgent, call. We answer.