PRETRESSED CONCRETE DESIGN

DESIGN OF CONCRETE STRUCTURES

Outline 1. CONSTRUCTION APPLICATIONS OF CONCRETE 2. CONCRETE CONSTRUCTION PRACTICES 3. CONCRETE FORMWORK 4. REINFORCING STEEL 5. QUALITY CONTROL

Definitions The water/cement ratio (w/c) is the weight of water divided by the weight of cement. When supplementary cementitious materials (SCM’s) are used, the w/c is referred to as the water/cementitious materials ratio (w/cm) and is the weight of water divided by the weight of cement and SCM’s. These terms are sometimes used interchangeably.

Design of Reinforced Concrete Structures Concrete Concrete is a mixture of cement, fine and coarse aggregate. Concrete mainly consists of a binding material and filler material. If filler material size is < 5mm it is fine aggregate and > 5mm is coarse aggregate. Plain Concrete (PC) Mixture of cement , sand and coarse aggregate without any reinforcement (Steel bars) is known as plain concrete. PC is strong in compression and week in tension. Its tensile strength is so small that i...

TABLE OF CONTENTS TYPICAL OFFICE FLOOR ....................................................................................................... 4 PART I – SCHEMATIC DESIGN AND PRESTRESSING ..................................................... 4 INTRODUCTION ...................................................................................................................... 4 1. COLUMN LAYOUT ......................................................................................................