Gradation for GSB

1. Sample details

Description of material Source Location Date of sampling Date of testing Tested by

2. Grading

Grading Total sample weight (gm)

Gradings III and IV are preferably used in lower sub-base; Gradings V and VI as sub-base-cum-drainage layer.

Grading limits per MoRTH Table 400-1 (Grading Requirements for Granular Sub-Base Materials). Verify against the current edition for your project.

3. Sieve analysis

Enter weight retained (gm) on each sieve. % passing and the pass/fail check are computed automatically.

4. Result

Overall conformity —

5. Report

This app saves everything (test data) for the active project in your browser, tied to this folder. Logos and project details are entered once on the main Projects page and shared by every module.

Import data (JSON)

Reference — MoRTH Table 400-1 grading limits (GSB)

Kept here for quick reference while testing. All six gradings are listed side by side; “—” means the table gives no limit for that sieve in that grading. Gradings III and IV are preferably used in lower sub-base; Gradings V and VI as sub-base-cum-drainage layer. Limits are transcribed for reference — verify against the current MoRTH edition / contract specification.