Secant Pile Wall Break-Even: About $115K Monthly Revenue

Fixed costs $88.5K/mo Monthly burn base

Contribution margin 74% After variable costs

Break-even revenue $119K/mo Revenue floor

Break-even timing Month 1 Launch month

Break-even calculator

Check how monthly revenue, direct costs, and overhead compare with break-even for a secant pile wall contractor.

Lean Base Full

Monthly revenue Revenue before direct project costs. $ Lower sales Higher sales Variable expenses Direct costs that rise with each project, including bonding, commissions, and project COGS. $ Lower costs Higher costs

Money available to cover fixed costs $450,300 $658,333 revenue - $208,033 variable expenses

Margin ratio

68%

Covers fixed costs

Yes

Fixed monthly costs Monthly overhead the margin has to cover before profit starts. $ Lower overhead Higher overhead

Break-even chart Revenue Total costs

Which secant pile wall expenses stay fixed, and which move with sales?

Cost classification

Your break-even is only reliable if $88,500 of monthly fixed overhead stays separate from unit-driven drilling inputs and revenue-based fees. Blend them together, and Month 1 break-even can look safer than the cash model really is.

Expense	Cost	Break-Even Treatment	Common Mistake
Equipment yard and office lease	Fixed	Carry $12,000 per month in fixed overhead from Month 1 through Month 60.	Spreading it by project too early.
Engineering software subscriptions	Fixed	Include $2,500 per month before calculating project contribution.	Burying it inside design job inputs.
Heavy equipment insurance	Fixed	Model $4,500 per month as required operating overhead after launch.	Treating it as optional after launch.
Rig maintenance and storage fees	Fixed	Carry $5,000 per month even when rigs sit idle between jobs.	Ignoring idle-rig months.
Core leadership and field payroll	Fixed	Use first-year payroll of $720,000 per year, or about $60,000 per month.	Counting payroll only when crews are billed.
Concrete, rebar, fuel, spoil disposal, and slurry handling	Variable	Tie direct inputs to units installed; first-year unit inputs are $120, $180, and $240 for the three wall types.	Averaging across wall types without checking mix.
Performance bonding and referral fees	Variable	Apply 8.0% of first-year revenue: 3.0% bonding plus 5.0% commissions and referrals.	Leaving them below gross margin.
Project-specific insurance, compliance, safety, quality, and engineering review	Variable	Apply the listed revenue-based charges, which total 5.0% for each service group.	Pricing jobs from unit inputs only.

How does break-even change from a lean launch month to the base plan and a fuller pipeline?

Scenario table

A lean month stays right on the edge, the base plan clears fixed overhead, and the fuller pipeline builds the widest cushion. As revenue rises, fixed payroll and yard costs matter less and contribution covers more of the load.

Planning assumptions only. These break-even figures show modeled cushion, not a guarantee of contract flow or margin.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean secant wall load	$115,000	$26,500	$88,500	77%	$0	Coverage is flat, so small slippage can erase the cushion.
Base Year 1 mix	$357,500	$91,583	$88,500	74%	$177,417	Launch volume clears break-even and leaves room for normal swings.
Full Year 3 pipeline	$658,333	$160,667	$126,000	76%	$371,667	Heavy utilization creates a strong cushion, but payroll discipline matters more.

What breaks the break-even plan if revenue slips or site costs rise?

Stress test

Base case coverage is solid: at $3.575M revenue, 77% contribution margin, and $885K fixed monthly costs, there’s about $1.867M cushion. The weak spots are idle rig days, crew standby, fuel inflation, spoil disposal overruns, and unbilled mobilization.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$1,149K	$1,867K cushion	Healthy cushion, but only if rigs stay busy.
Revenue shortfall	Revenue falls 20% to $2,860K.	$1,149K	$1,317K cushion	Coverage holds, but idle time cuts fast into slack.
Fixed-cost pressure	Fixed costs rise 15% to $1,018K.	$1,322K	$1,734K cushion	Higher overhead is manageable if utilization stays high.
Margin pressure	Contribution margin falls to 72%.	$1,229K	$1,689K cushion	Fuel, spoil handling, or rework can squeeze margin fast.
Combined pressure	Revenue falls 20%, margin falls to 72%, and fixed costs rise 15%.	$1,414K	$1,041K cushion	This is the tightest case and leaves little room for underused rigs.

Can the founder prove backlog, margin, and cash before committing to the rig and yard?

Founder checklist

Before you lock the yard, rig, and first crew, make sure signed or near-signed work clears the monthly break-even load and that the Month 3 cash trough is covered. If either one is weak, the first months can get tight fast.

1Backlog Proof>$115K/mo

Verify signed or near-signed work covers the first-year mix of 1,200 hard soft wall units, 800 hard hard wall units, and 500 cased pile units before you lock major equipment.

2Fixed Load$28.5K/mo

The yard and office lease alone is $12K a month, and the full fixed stack runs about $28.5K, so backlog has to clear both before mobilization.

3Margin Stack49.6% EBITDA

Year 1 revenue is $4.29M and EBITDA is $2.129M, so the model runs at about 49.6% EBITDA margin; keep that spread after 3.0% bonding fees and 5.0% sales commissions.

4Crew Ramp$60K/mo

The planned Year 1 payroll is about $60K a month, so only add FTE when field use is high enough to keep the Senior Project Manager, rig operators, design support, and safety coverage productive.

5Equipment Access$3.615M capex

Confirm access to the drilling rig, crane, grout plant, testing tools, desanding unit, truck, and site containers before you promise dates, and keep insurance, safety cover, and backup subcontractors for testing, surveying, transport, and specialty tooling lined up.

6Cash Cushion-$1.618M

The model bottoms out at -$1.618M in Month 3, so keep enough cash or credit to survive the equipment ramp and any delay in the first jobs.