Pulling the rate table…
BOILERMAKER leads the building schedule for Guthrie County, IA at $48.48 base plus $33.91 fringe. The active federal wage determination covering building construction in Guthrie County, IA lists 15 classifications with published rates, base pay from $16.11 to $48.48 per hour. The determination was last modified May 18, 2026.
| Classification | Base | Fringe | WD |
|---|---|---|---|
| BOILERMAKER | $48.48 | $33.91 | IA20260079 |
| CARPENTER(INCLUDES DRYWALL HANGING) | $35.50 | $21.43 | IA20260079 |
| DRYWALL FINISHER/TAPER | $21.87 | $10.32 | IA20260079 |
| ELECTRICIAN(INCLUDES LOW VOLTAGE WIRING) | $45.45 | $20.94 | IA20260079 |
The highest published base on this schedule belongs to BOILERMAKER at $48.48 per hour plus $33.91 fringe; the schedule's median base is $29.36.
The most recent modification to the governing determination is dated May 18, 2026. DOL's weekly publication cycle means further modifications can post on any Friday.
This schedule mixes sources: 67% of lines carry union identifiers and the rest are survey-based. Two crews on one site can be governed by rates that update on entirely different rhythms.
A wage determination is cited as number plus modification, for example IA20260079 Mod dated May 18, 2026. Your certified payroll should reflect the determination in your contract, not necessarily the newest one.
Save the full determination text with your bid papers the day you price the job. If rates change later, the contract determination is your record of what you bid against.
DOL publishes modifications weekly, generally Fridays. A quick check before running payroll catches a mid-project modification before it shows up in an agency review instead.
The classification that applies is determined by the work performed, not the worker's title. A foreman who works with the tools is generally due the rate for the hours on the tools.
You can meet the fringe obligation with bona fide benefit plan contributions, cash, or a combination. Track the hourly equivalent of what you contribute; agencies ask for the math.
The signed Statement of Compliance may be the WH-347 back page or another document with identical wording. The signature is a federal certification by your company's officer; accuracy is on the certifier.
Synced from SAM.gov July 18, 2026. The wage determination incorporated into your contract is the legally operative document.
| INSULATORMECHANICAL (DUCT, PIPE AND MECHANICAL SYSTEM INSULATION) | $18.45 | $4.04 | IA20260079 |
| IRONWORKERORNAMENTAL | $35.53 | $24.45 | IA20260079 |
| IRONWORKERREINFORCING | $37.50 | $30.99 | IA20260079 |
| LABORERCOMMON OR GENERAL (MADISON COUNTY) | $29.36 | $17.99 | IA20260079 |
| LABORERMASON TENDER - BRICK (MADISON COUNTY) | $29.36 | $17.99 | IA20260079 |
| LABORERCOMMON OR GENERAL (GUTHRIE COUNTY) | $28.57 | $17.53 | IA20260079 |
| LABORERMASON TENDER - BRICK (GUTHRIE COUNTY) | $28.57 | $17.53 | IA20260079 |
| LABORERPIPELAYER | $16.11 | $0.00 | IA20260079 |
| OPERATORCRANE | $25.70 | $9.13 | IA20260079 |
| PAINTERSPRAY | $19.77 | $6.64 | IA20260079 |
| ROOFER | $32.50 | $15.53 | IA20260079 |
* changed in the most recent modification. Survey-based (SU) identifiers are non-union survey rates. Amounts tagged per day or per shift are published that way in the source determination and are not hourly wages; they are excluded from the hourly figures above.