ERA Road Signs & Markings Quantity Estimator
Calculate thermoplastic paint surface area ($m^2$), paint weight ($kg$), reflective glass beads ($kg$), retroreflective warning/regulatory/guide sign schedules, cat-eye road studs, and delineators per ERA Chapter 11 and road marking specifications.
ETHIOPIAN ROADS ADMINISTRATION (ERA)
TRAFFIC CONTROL DEVICES & PAVEMENT MARKINGS BILL OF QUANTITIES
Calculated per ERA Geometric Design Manual 2013 (Chapter 11) & Technical Specifications
Date: 8/10/2026
Engineer: [Insert Engineer Name]
Project: [Insert Project Title]
Section: [Insert Section Details]
Corridor Length: 40 km (7m width)
Design Speed: 80 km/h
Design Standard Manual Option
Roadway Marking Layout Diagram
100mm Width (broken rural)ERA Bill of Quantities (BoQ Item Series 61)
40 km Corridor| Item No. | Description | Unit | Quantity |
|---|---|---|---|
| 61.01 | Hot-applied thermoplastic road marking paint (100mm width, 1.5mm-2.0mm thickness) | m² | 11,436 |
| 61.02 | Reflective glass beads surface application (Class B retroreflective) | kg | 4,574 |
| 61.03 | Retroreflective raised pavement markers / Cat-Eye road studs (White/Red/Yellow) | No. | 4,333 |
| 61.04 | Roadside warning traffic signs (W-series, Class 2 retroreflective sheeting, 750mm/900mm triangle) | No. | 84 |
| 61.05 | Roadside regulatory traffic signs (R-series Stop/Yield/Speed limit, 600mm/750mm circle) | No. | 36 |
| 61.06 | Directional and destination guide signs (G-series rectangular aluminum backing) | m² | 128 |
| 61.07 | Flexible retroreflective delineator posts (1.2m height above ground) | No. | 800 |
| 61.08 | Standard reinforced concrete kilometer posts | No. | 40 |
- Apply thermoplastic paint at min 180°C - 200°C ambient temperature on clean, dry pavement.
- Ensure retroreflectivity reaches min 250 mcd/lux/m² for white lines and 150 mcd/lux/m² for yellow lines.
- Install cat-eye road studs using high-bond epoxy adhesive anchored into asphalt surface per ERA Chapter 11.4.
1. Corridor Marking & Device Totals
Total Thermoplastic Paint Area: 11436 m²
Thermoplastic Powder Material: 40026 kg | Glass Beads: 4574 kg
Total Traffic Signs Count: 120 No.
2. Bill of Quantities (BoQ) Series 61
| Item No. | Description | Unit | Quantity |
|---|---|---|---|
| 61.01 | Hot-applied thermoplastic road marking paint (100mm width, 1.5mm-2.0mm thickness) | m² | 11,436 |
| 61.02 | Reflective glass beads surface application (Class B retroreflective) | kg | 4,574 |
| 61.03 | Retroreflective raised pavement markers / Cat-Eye road studs (White/Red/Yellow) | No. | 4,333 |
| 61.04 | Roadside warning traffic signs (W-series, Class 2 retroreflective sheeting, 750mm/900mm triangle) | No. | 84 |
| 61.05 | Roadside regulatory traffic signs (R-series Stop/Yield/Speed limit, 600mm/750mm circle) | No. | 36 |
| 61.06 | Directional and destination guide signs (G-series rectangular aluminum backing) | m² | 128 |
| 61.07 | Flexible retroreflective delineator posts (1.2m height above ground) | No. | 800 |
| 61.08 | Standard reinforced concrete kilometer posts | No. | 40 |
Road Signs & Markings Quantity Estimator Documentation
Technical specifications, mathematical formulas, and civil guidelines
1. Functional Purpose
The **Road Signs & Markings Quantity Estimator** compiles complete material takeoff schedules for traffic control devices adhering strictly to **ERA Geometric Design Manual 2013 (Chapter 11)** and standard technical specifications.
It computes total thermoplastic paint surface area (m²), paint weight (kg @ 3.5 kg/m²), glass bead application (kg @ 0.40 kg/m²), warning/regulatory/guide sign counts, retroreflective cat-eye road studs, and delineator posts.
2. Marking Ratios & Rates
Rural broken centerlines use a 3m line / 9m gap pattern (0.25 effective painted length). Double solid lines use twin continuous lines (width × 2 × length). Cat-eye studs are spaced at 12m on tangents and 6m on horizontal curves per ERA Chapter 11.4.