Environment elements – Climatic Design Types – Natural and Induced.part three-10
MIL-STD-810H, Environmental Engineering Considerations and Laboratory Tests
Last Updated 29 Oct 2026
Hover any section to copy its link or text, ask Copilot about it, or bookmark it.
10 tables appear under this heading.
1. PDF page 1033
| 4.1 | Hot climatic design types | PART THREE-10 |
| 4.1.1 | High temperature | PART THREE-11 |
| 4.1.1.1 | Hot-dry cycle (A1) | PART THREE-11 |
| 4.1.1.2 | High temperature with low relative humidity | PART THREE-12 |
| 4.1.2 | High temperature with high humidity | PART THREE-14 |
| 4.1.3 | High absolute humidity | PART THREE-15 |
| 4.1.3.1 | Hot-humid cycle (B3) | PART THREE-15 |
| 4.2 | Basic climatic design type | PART THREE-16 |
| 4.2.1 | High relative humidity with high temperature | PART THREE-16 |
| 4.2.2 | High humidity daily cycles | PART THREE-17 |
| 4.2.3 | Temperature, humidity, solar radiation (constant high humidity cycle (B1)) | PART THREE-18 |
| 4.2.4 | Temperature, humidity, solar radiation (variable high humidity cycle (B2)) | PART THREE-18 |
| 4.2.5 | Basic hot daily cycle (A2) | PART THREE-19 |
| 4.2.6 | Basic cold daily cycle (C1) | PART THREE-20 |
| 4.3 | Cold and severe cold design types | PART THREE-21 |
| 4.3.1 | Low temperature | PART THREE-21 |
| 4.3.2 | Cold climate design type (C2) | PART THREE-23 |
| 4.3.3 | Severe cold climatic design type (C3) | PART THREE-24 |
| 4.3.4 | High relative humidity with low temperature | PART THREE-24 |
| 4.3.5 | Low relative humidity with low temperature | PART THREE-24 |
| 4.3.6 | Low absolute humidity | PART THREE-24 |
2. PDF page 1034
| Paragraph | | Page |
|---|
| 5. | ADDITIONAL ENVIRONMENTAL ELEMENTS | PART THREE-25 |
| 5.1 | Wind | PART THREE-25 |
| 5.1.1 | Wind element | PART THREE-25 |
| 5.1.2 | Wind speed. | PART THREE-25 |
| 5.2 | Rain | PART THREE-27 |
| 5.2.1 | Intensities | PART THREE-27 |
| 5.2.2 | Rainfall rate. | PART THREE-28 |
| 5.3 | Snow | PART THREE-29 |
| 5.4 | Ice | PART THREE-32 |
| 5.4.1 | Ice phenomena | PART THREE-32 |
| 5.4.2 | Ice accretion. | PART THREE-33 |
| 5.5 | Atmospheric pressure. | PART THREE-33 |
| 5.6 | Ozone concentration. | PART THREE-33 |
| 5.7 | Sand and dust | PART THREE-33 |
| 5.8 | Dust as a natural obscurant. | PART THREE-34 |
| 5.9 | Freeze-thaw cycles. | PART THREE-36 |
| 5.9.1 | Basic cold-wet cycle | PART THREE-36 |
| 5.10 | Microbial growth (fungus/mould). | PART THREE-37 |
| 5.11 | Hail | PART THREE-38 |
| 5.12 | Combined environmental effects | PART THREE-38 |
| 5.13 | High elevations and upper air conditions. | PART THREE-39 |
| 6. | REFERENCED/RELATED DOCUMENTS | PART THREE-39 |
| 6.1 | Reference documents | PART THREE-39 |
| 6.2 | Related documents | PART THREE-39 |
3. PDF page 1034
| Figure 1. | Areas of occurrence of climatic design types | PART THREE-5 |
| Figure 2. | Distribution of absolute minimum temperatures | PART THREE-6 |
| Figure 3. | Distribution of absolute maximum temperatures | PART THREE-7 |
4. PDF page 1034
| Table I. | Summary of climatic conditions and daily cycles of temperature, solar radiation, and RH | PART THREE-10 |
| Table II. | Hot climatic design type A1: Hot-dry daily cycle (Natural and Induced) | PART THREE-13 |
| Table III. | Daily cycle of temperature & other elements associated with worldwide long-term extremes of high temperature | PART THREE-14 |
| Table IV. | Abadan frequencies of occurrence of high temperatures with high humidity | PART THREE-15 |
| Table V. | Hot climate design type B3: Hot-humid daily cycle | PART THREE-16 |
| Table VI. | Basic climatic design type B1: Constant high humidity daily cycle | PART THREE-18 |
| Table VII. | Basic climatic design type B2: Variable high humidity daily cycle. | PART THREE-19 |
| Table VIII. | Basic climatic design type A2: Basic hot daily cycle. | PART THREE-20 |
| Table IX. | Basic climatic design type C1: Cold daily cycle | PART THREE-21 |
5. PDF page 1035
| Paragraph | | Page |
|---|
| Table X. | Monthly cycle of temperature associated with the worldwide long term low temperature extremes | PART THREE-22 |
| Table XI. | Cold climate design type C2: Daily cycle | PART THREE-23 |
| Table XII. | Wind speed multiplication factors at selected heights | PART THREE-25 |
| Table XIII. | Associated gusts (m/s) | PART THREE-26 |
| Table XIV. | Associated gusts, m/s (mph) | PART THREE-27 |
| Table XV. | Rainfall intensities - Drop diameter range | PART THREE-27 |
| Table XVI. | Raindrop concentrations per cubic meter | PART THREE-29 |
| Table XVII. | Long term extreme rainfall rates (cm/h) | PART THREE-29 |
| Table XVIII. | Horizontal mass fluxes for blowing snow | PART THREE-30 |
| Table XIX. | Typical distribution of blowing snow particle sizes | PART THREE-30 |
| Table XX. | Highest recorded snow mass fluxes | PART THREE-32 |
| Table XXI. | Number of days per year with dust storms (visibility <1 km)................ | PART THREE-35 |
| Table XXII. | Cold-wet daily cycle of temperature, humidity, and solar radiation | PART THREE-37 |
| Table XXIII. | European test fungus species | PART THREE-38 |
| Table XXIV. | Low air pressure and temperature at elevation | PART THREE-39 |
6. PDF page 1035
| 1. | INTRODUCTION | | PART THREE-A-1 |
| 2. | MIL-HDBK-310 | | PART THREE-A-1 |
7. PDF page 1035
| Figure A-1. Temperature extremes | PART THREE-A-3 |
| Figure A-2. Precipitation extremes | PART THREE-A-6 |
| Figure A-3. Miscellaneous extremes | PART THREE-A-8 |
8. PDF page 1035
| Table A-I. Weather Conditions & Climatic Extremes - Brief Summary. | PART THREE-A-1 |
| Table A-II. Precipitation extremes. | PART THREE-A-4 |
| Table A-III. Miscellaneous extremes | PART THREE-A-7 |
9. PDF page 1035
| 1. | TERMS | PART THREE-B-1 |
|---|
| 1.1 | Climatic design types. | PART THREE-B-1 |
| 1.2 | Daily weather cycles. | PART THREE-B-1 |
| 1.3 | Operational, and storage and transit conditions | PART THREE-B-1 |
10. PDF page 1035
| 1. | RELATIONSHIP BETWEEN AR 70-38 AND MIL-HDBK-310 | PART THREE-C-1 |
|---|
| 1.1 | Background | PART THREE-C-1 |
| 1.2 | Risk policy | PART THREE-C-2 |
| 1.3 | Additional guidance | PART THREE-C-2 |