PWD. E/M ESTIMATE BUILDER

YOUR WORK, YOUR ACCOUNT

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Keep your estimates and room designs together across devices.

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Developed by Sandeep Jaiswal · Sub Engineer, E/M Raipur Division

WORKSPACE / NEW ESTIMATE
Device-only estimates. Sign in to save private estimates online.
FROM SCHEDULE TO ESTIMATE

Build your estimate.

Select your SOR. Choose items. Enter quantities.

01

Work details

Draft saved on this device
02 / SOR CATALOGUE

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Enter a quantity beside each checked item.
03 / YOUR ESTIMATE

Selected items 0

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ITEM / DESCRIPTIONQUANTITYAMOUNT
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Your estimate starts here

Add an item from the catalogue.
Its original rate and description come with it.

Estimate total₹0.00

GST is already included in the selected SOR rates.

G Type reference template · Original SOR wording

Estimate preview

Download PDF for a fixed A4 layout with repeated column headings. Print uses your browser settings.
My estimates

Your workspace estimates. Account work syncs online; device-only work stays in this browser. Download a backup for a separate copy.
Saved versions

Open a saved version as a separate copy. The current estimate stays saved.

Estimate sections

Choose the sections for this work and edit their headings. SOR descriptions, units and rates stay locked. Only sections with items appear in Excel/PDF.
Calculate quantity from measurements

Use dimensions consistent with the SOR unit: metres for Metre, square metres and cubic metres. No automatic unit conversion is applied.

Details stay saved with this estimate. Only the final quantity appears in the original Excel/PDF format. Editing quantity manually clears the saved measurements for that item.

Electrical design assistant

SOR-only suggestions · fixed 30 m per segment · circuit drop limit 2% · sub-main drop limit 1%

Plan your building

Set up floors and spaces first. Add equipment to each space in the next step.

Add spaces to this floor

Counts add new spaces. Existing rooms and their items are retained. One DB per floor is used for this planning layout.

Calculation method & remaining checks

Automatic planning groups: lighting/fan circuits are split at 800 W or 20 points, whichever comes first (CPWD 2023 §3.10.1). Socket/power/AC/pump loads use individual outlets/units per circuit as a conservative starting schedule. Review the final circuit arrangement for the actual building. Fan/socket design allowances use CPWD 2023 §3.9; AC, BLDC, exhaust and pump defaults marked as estimates must be checked against nameplates.

Connected load = quantity × electrical input watts. Demand factor is 100%; no automatic diversity or spare margin. PF is fixed at 0.9 as a project assumption. Single-phase I = W / (V × PF); three-phase I = W / (√3 × 415 × PF). Main current uses the highest phase current with real/reactive load summed per phase. A three-phase row assumes a balanced load. Three-phase sub-main screening includes the calculated fundamental neutral current, using (highest phase current + neutral current) × length × (R+X) relative to phase voltage. Harmonic neutral current is not included.

Wire shortlist is a voltage-drop screen, not a current-capacity selection. Copper screening uses R = 0.0225 / area Ω/m, X = 0.00008 Ω/m and ΔV ≤ k × I × 30 × (R+X), k = 2 or √3. Separate screening budgets: sub-main 1%, circuit 2%. Combined path is shown. These are planning assumptions, not a declaration of code compliance. Earth and neutral arrangements, cable ampacity/derating, starting current, trip curve, fault level, disconnection and selectivity remain to be checked. A SOR rate covering an ampere range does not specify an exact purchased rating.

Voltage-drop method · Protection selection checks

Import device estimates into your account

Choose which device-only estimates to copy into the signed-in account. Original device estimates remain available. Other accounts are never imported.