1. Welcome to the presentation on
“T Beam Design: Singly & Doubly by WSD method”
Presented By
Md. Tanvir Alam
ID: 10.01.03.104

2. T Beam
 Slabs are monolithically casted with beams in positive
moment zone
 Part of the slab act as a part of the beam
 Resist the longitudinal compression

3. Singly Reinforced
 Reinforcement is provided in tension zone only

4. Doubly Reinforced
 Concrete can not develop the required compressive
force to resist the maximum bending moment
 Reinforcement is provided in both compression and
tension zone.

5. T-Beam Section
• T- Beam are designed as singly reinforced

6. WSD Design
 Members are design to carry actual/service loads such
that stresses of materials will be within
elastic/allowable stress limit.
 The allowable stress limit of concrete and steel are ½
of compressive strength and ½ of yield strength
respectively.

7. Moment Capacity Determination
 Calculate, b(effective)
 Calculate ,
 Check that kd>t or kd<t; If kd>t then beam will be analyzed as T-beam
 Calculate ,
 Calculate,M= Asfsjd
 Calculate actual stress,
 Check, fc (actual)< fc(allowable)

9. Steel Area Design
 Calculate, b(effective)
 Calculate working moment, M
 Assume, jd=d-t/2 & calculate,
 Calculate,
 Check that kd>t or kd<t; If kd>t then beam will be analyzed as T-beam
 Calculate,
 Calculate,
 Calculate actual stress
 Check, fc (actual)< fc(allowable)