Bidfident for concrete subcontractors
Estimating software for concrete slabs and frames
Concrete subcontractors use Bidfident to price a ground-bearing slab line by line: edge formwork by the metre, concrete by the cubic metre with a pump charged for its own hours, power floating and curing by the square metre, and saw-cut joints by the metre. Formworkers, concreters and labourers each take their own rate, reinforcement quotes sit side by side, and cold weather protection goes in as a lump sum.
- Electrical
- Plumbing and mechanical
- HVAC and ductwork
- Dry lining
- Roofing
- Painting and decorating
- Flooring
- Brickwork and blockwork
- Concrete
Enter your email and Bidfident sends you a sign-in link. New companies start with a starter rate library. Who runs Bidfident, and what it keeps about you.
Sound familiar?
The pump priced for the whole job
The pump is on site for the pour, not for every hour the concreters spend on the line. In Bidfident the plant on a line can have its own hours per unit, so it's charged for the time it runs.
Three gangs, one rate
Formworkers, concreters placing and labourers curing don't cost the same, but a blended rate treats them alike. In Bidfident each line takes its trade's rate from the library.
Reinforcement quotes in your inbox
Steel fixing quotes come in by email, and the lowest isn't always the one carried. In Bidfident each package's quotes sit side by side, the lowest is flagged, and you carry the one you pick.
How Bidfident fits your work
The pump for its own hours
Give the pump on the concrete line its own hours per cubic metre and it's charged for that time. Leave it blank, as on the power float line, and it runs for the gang's hours.
Formworkers, concreters and labourers
Formwork at the formworker's rate, placing and finishing at the concreter's, curing at the labourer's. Each line takes its trade's rate from the library.
Cubic metres, square metres and metres
Concrete by the cubic metre, power floating and curing by the square metre, formwork and saw-cuts by the metre. Each line takes a quantity, hours per unit, a material price with a waste percentage, and plant by the hour.
Reinforcement quotes side by side
Enter each quote for reinforcement, supply and fix, see the lowest flagged, and carry it or the one you pick. No quote yet? Carry an allowance.
Catch a slab line before it goes out
Lines to check flags a line with no quantity, no cost code, a total of zero, or hours or a material price more than 25% off the library's. Mark a line as right and it stays quiet.
Cold weather and supervision
Insulated blankets and cold weather protection as a lump sum, and supervision by the week, linked to the job duration.
Worked example: ground-bearing slab for a warehouse extension
A made-up job, priced in Bidfident: 33 lines of your own work, 3 subcontract packages and 5 preliminaries items over a 6-week programme. The 5 lines this page talks about are listed one by one, and the rest are added up in one row. It's the same job you can open as an example project in Bidfident, so every figure below matches it.
To open this job in Bidfident: sign in and set up your company in the UK, then on the Projects screen, under Example project, pick "Specialist subcontractors" and "Concrete" and press Add example project.
| Item | Amount |
|---|---|
Edge formwork, ground slab, 130 m
| £2,613.00 |
Concrete, C32/40, placed, 200 m3
| £31,440.00 |
Power float finish, 1,000 m2
| £1,980.00 |
Curing membrane, sprayed, 1,000 m2
| £820.00 |
Saw-cut joints, 480 m
| £1,224.00 |
28 more lines of your own work
| £109,107.54 |
| Item | Amount |
|---|---|
Reinforcement, supply and fix
| £20,600.00 |
Concrete testing, cubes and slump
| £3,740.00 |
Joint sealing to saw-cuts, allowance
| £4,700.00 |
| Item | Amount |
|---|---|
Supervision, site supervisor
| £4,800.00 |
Cold weather protection, insulated blankets
| £2,200.00 |
Contracts manager, part time
| £1,980.00 |
Small tools, pokers and consumables
| £792.00 |
Skips and concrete washout
| £744.00 |
| Item | Amount |
|---|---|
Own work
| £147,184.54 |
| Excluded lines, not counted | £3,833.50 |
| Subcontractors | £29,040.00 |
Preliminaries
| £10,516.00 |
Direct cost
| £186,740.54 |
Contingency
| £7,469.62 |
Overheads and profit
| £19,421.02 |
| Subtotal before the bond | £213,631.18 |
Bond
| £2,136.31 |
Insurance
| £1,068.16 |
Tender total
| £216,835.65 |
VAT, for reference
| £43,367.13 |
See it in Bidfident
Coming soon Ask your estimate anything. Claude first, ChatGPT to follow. See how it will work
Questions
Can I price concrete by the cubic metre?
Yes. Units are free text, so m³, m², m and nr all work. Bidfident doesn't convert between units, so price each line in the unit its rate is in.
Can the pump be priced for less time than the gang?
Yes. Give the line's plant its own hours per unit. Leave it blank and it runs for the gang's hours, as a power float usually does.
Can I add waste to the concrete?
Yes. Each line has a waste percentage on its material, so the concrete can carry 3% and the formwork 10%.
Does it work out cubic metres from the slab size?
No. Bidfident doesn't calculate volumes from drawings or dimensions. Work out the cubic metres, then type or paste them in.
Can I price cold weather protection separately?
Yes. Add it to your preliminaries as a lump sum, by the week or by the month. Weekly and monthly items can follow the job duration.
Can reinforcement go in as a subcontract package?
Yes. Add reinforcement, supply and fix, on the Subcontractors tab and enter each steel fixer's quote. The lowest is flagged and carried unless you pick another. No quote yet? Carry an allowance.
Does Bidfident work with Claude or ChatGPT?
Not yet, but it's coming. You'll be able to connect Bidfident to your own Claude or ChatGPT account and ask about your estimates in plain English. The answers will come from Bidfident's own figures, so they match the estimate. It will use the account you already have: Claude first, ChatGPT to follow.
Price your next concrete tender in Bidfident
Enter your email and Bidfident sends you a sign-in link. New companies start with a starter rate library. Who runs Bidfident, and what it keeps about you.