calc-report

name	calc-report
description	Engineering calculation report structure — stamp-ready format, given/find/solution sections, assumptions, unit checks, code references, revision control, PE-seal requirements.
metadata	{"priority":5,"promptSignals":{"phrases":["calculation report","calc report","engineering report","PE stamp","calculation sheet","design report","stamp ready"],"minScore":4}}

Engineering Calculation Report — Complete Skill

Report Structure (Stamp-Ready Format)

Cover Sheet

PROJECT: [Project Name]            CALC NO: [XXX-CALC-001]
CLIENT: [Client Name]              REV: [0]
PREPARED BY: [Name, PE]            DATE: [YYYY-MM-DD]
CHECKED BY: [Name, PE]             SHEET: 1 of N
APPROVED BY: [Name, PE]

TITLE: [Descriptive Title — e.g., "Floor Beam B-1 Flexure Design"]
APPLICABLE CODES: AISC 360-22, ASCE 7-22, AWS D1.1-2020
PURPOSE: [One paragraph — what is being designed/analyzed and why]

Revision Table

Rev	Date	Description	By	Chk
0	2025-01-15	Initial issue	MP	JD
1	2025-02-10	Updated loads per client comment	MP	JD

Table of Contents (for multi-page calcs)

1. Design Basis
2. Material Properties
3. Loading
4. Section Selection
5. Strength Checks
6. Serviceability Checks
7. Connection Design
8. Summary and Conclusions
9. References
10. Appendix (Supplemental)

---

Standard Calculation Block Format

1. Given

State all input data explicitly:

GIVEN:
  Span:           L = 6.0 m
  Tributary width: WT = 3.0 m
  Dead load:      w_DL = 5.0 kN/m²
  Live load:      w_LL = 4.0 kN/m²
  Steel grade:    ASTM A992, F_y = 345 MPa, F_u = 450 MPa
  Section:        W310×60 (preliminary selection)

2. Find

FIND:
  (a) Moment demand M_u [kN·m]
  (b) Flexural capacity φM_n [kN·m]
  (c) Deflection under live load δ_LL [mm]
  (d) Adequacy: φM_n ≥ M_u? δ_LL ≤ L/360?

3. Assumptions

ASSUMPTIONS:
  1. Simply supported beam, uniform loading
  2. Beam is fully laterally braced (deck connected throughout)
  3. Live load reduction per ASCE 7 Section 4.7 not applied (conservative)
  4. Self-weight of beam included in dead load
  5. No torsional loading

4. Solution (Step-by-Step)

STEP 1: Load Calculation
  w_DL,beam = w_DL × WT = 5.0 × 3.0 = 15.0 kN/m
  w_LL,beam = w_LL × WT = 4.0 × 3.0 = 12.0 kN/m
  w_u = 1.2×w_DL + 1.6×w_LL = 1.2×15.0 + 1.6×12.0 = 37.2 kN/m ← ASCE 7 Comb. 2

STEP 2: Moment Demand
  M_u = w_u L²/8 = 37.2 × 6.0²/8 = 167.4 kN·m

STEP 3: Section Properties (W310×60)
  d = 303 mm, b_f = 203 mm, t_f = 13.1 mm, t_w = 7.5 mm
  S_x = 844×10³ mm³, Z_x = 962×10³ mm³, I_x = 129×10⁶ mm⁴

STEP 4: Compactness Check (AISC Table B4.1b)
  Flange: b_f/(2t_f) = 203/(2×13.1) = 7.75 ≤ λ_pf = 0.38√(E/F_y) = 9.15 ✓ COMPACT
  Web: h/t_w = (303-2×13.1)/7.5 = 36.9 ≤ λ_pw = 3.76√(E/F_y) = 90.6 ✓ COMPACT

STEP 5: Flexural Capacity (L_b = 0, fully braced)
  M_n = M_p = F_y × Z_x = 345 × 962×10³ = 331.9×10⁶ N·mm = 331.9 kN·m
  φM_n = 0.90 × 331.9 = 298.7 kN·m

STEP 6: Demand/Capacity Check
  D/C = M_u / φM_n = 167.4 / 298.7 = 0.56 < 1.0 ✓ OK

STEP 7: Deflection Check (Live Load Only)
  w_LL = 12.0 kN/m = 12.0 N/mm
  δ_LL = 5wL⁴/(384EI) = 5×12.0×6000⁴/(384×200000×129×10⁶) = 9.9 mm
  L/360 = 6000/360 = 16.7 mm
  δ_LL = 9.9 mm ≤ 16.7 mm ✓ OK

5. Summary Table

RESULTS SUMMARY:
┌────────────────────┬──────────┬──────────┬────────┐
│ Check              │ Demand   │ Capacity │ D/C    │
├────────────────────┼──────────┼──────────┼────────┤
│ Flexure M [kN·m]   │ 167.4    │ 298.7    │ 0.56 ✓│
│ Shear V [kN]       │ 111.6    │ 347.2    │ 0.32 ✓│
│ Deflection δ [mm]  │ 9.9      │ 16.7     │ 0.59 ✓│
└────────────────────┴──────────┴──────────┴────────┘
CONCLUSION: W310×60 is ADEQUATE. Use as selected.

6. Unit Check Box

Every formula result must include:

CHECK UNITS:
[N/mm²][mm³] = [N·mm] ✓ (moment consistent)
[mm/s²][kg] = [N] ✓

7. References

REFERENCES:
[1] AISC 360-22: Specification for Structural Steel Buildings
[2] ASCE 7-22: Minimum Design Loads for Buildings, Table 4.3-1
[3] AISC Steel Construction Manual, 16th Ed., Part 3 (Beam Tables)

---

Quality Requirements (Before Stamping)

• All inputs referenced to source (drawings, specifications, client docs)
• All units consistent throughout (SI or US customary — not mixed)
• Every intermediate result labeled with units
• Governing load combination stated explicitly
• All code equations cited by equation number
• Summary table on final page
• Checked by a second engineer (independent check)
• Checker initials on every page
• Page numbers: "X of Y" format
• Revision block updated

PE Seal Requirements (USA)

• PE license number, state, expiration date on stamp
• Wet seal OR authorized digital seal (per state board)
• Engineer of Record (EOR) responsible for complete design
• Only stamp calculations within your discipline and competence
• NCEES Model Law: stamp = professional responsibility

Output

Generate calculation in this exact format: cover sheet, given/find/assumptions, step-by-step with unit checks, summary table, references. Format for PDF print with proper headers/footers.