| turned bolt | สลักเกลียว |
| two-way grid | กริดสองทาง |
| two-way reinforcement | เหล็กเสริมสองทาง |
| two-way slab | แผ่นพื้นสองทาง |
| typical section | รูปตัดทั่วไป |
| termiculite | วัสดุกันร้อนชนิดหนึ่ง, เวอมิคูไลท์ |
| Translation: | (english) Motion of an object where the path of every point is a straight line. |
| Transmissibility: | (english) The principle stating that a force has the same external effect on an object regardless of where it acts along its line of action. |
| Thermocline | (Environmental Engineering) The depth at which an inflection point occurs in a lake temperature profile. |
| Thiols | (Environmental Engineering) Organic compounds which contain the "-SH" functional group. Also called mercaptans. |