Structural Detailing Intro

Technological University of the Philippines

Taguig Campus

Bachelor of Science in Civil Engineering

STRUCTURAL CAD

STEEL STRUCTURAL DETAILING

INTRODUCTION

In construction, anything composed of parts is called a structure. To design, manufacture and put

the various parts together to form a complete structure, structural drawings must be prepared.

Draftsmen are tasked to prepare two types of drawings:

1. Engineering Drawings are used to provide an overall picture of a job.

a) Location of structural components like columns, beams and girders

b) Basic dimensions

c) Typical sections & notes

2. Shop Drawings are much more detailed.

a) Connection details

b) Fabrication details

c) Bill of materials

Engineering and Shop Drawings may be combined into one set to form Working Drawings.

STRUCTURAL STEELWORK IN GENERAL

Structural Steel is produced in rolling mills in standard shapes as shown below:

Grades and Standard Sections

Three grades of Steel are available:

a) Grade 43 : Mild Steel

b) Grade 50 : High Yield Steel

c) Grade 55 : High Yield Steel

Steel produced at rolling mills is formed into various shapes. Properties of these shapes are

standardized and dimensions are detailed in handbooks.

( Continuation of Universal Beam)

(Continuation of Universal Beam)

STEEL STRUCTURAL DETAILING

PRACTICAL EXERCISE No. 1

STRUCTURAL SHAPES

Problem : Given the table for detailing various steel shapes and following the standard detailing

dimensions as shown in the sketch for each table, draw the following shapes using a scale of 1:20:

a) 305 x 165 x 40 UB

b) 203 x 133 x 30 UB

c) 254 x 254 x 89 UC

d) 356 x 368 x 153 UC

e) 178 x 102 Joist

f) 152 x 76 Channel

g) 229 x 89 Channel

h) 40 x 40 x 6 Angle

i) 60 x 60 x 8 Angle

j) 125 x 75 x 10 Angle

Notes: a) Observe proper weight of lines ( 0.50 for object lines, 0.18 for dimension lines)

b) Name each drawing by their standard designation ( text font=arial, height = 50mm)

STRUCTURAL STEEL FRAMING PLANS

A Structural Steel Framing Plan is a plan –view representation showing all columns, beams,

girders, joists and other framing members as they will appear when the frame is erected. They are

of two types:

a) Column Framing Plan : shows the vertical structural members(columns) and the

foundations on which they bear. It also includes the column schedule and is drawn in the

same sheet. Column framing plans are prepared as follows:

1. Examine the schematics and select an appropriate scale.

2. Layout centerline of column grid lines.

3. Label vertical centerlines with letters and horizontal centerlines with numbers.

4. Draw the foundations, put dimensions and a North arrow.

5. Add the column schedule.

b) Beam Framing Plan : shows the horizontal structural members (beams, girders, joists).

Floor and roof framing plans are commonly referred to as beam framing plans. The plan is

coded to identify connections that require details. For common details, the following

abbreviations are used: Sim – two mor more connections with the same details ,

Opp Hd – meaning opposite hand, applies to connection details that are exactly opposite.

Beam framing plans are prepared as follows:

1. Examine the schematics and select an appropriate scale.

2. Layout column grid lines and draw columns.

3. Label vertical centerlines with letters and horizontal centerlines with numbers.

4. Draw all horizontal members(beams, girders and joists) and label each member

with the proper shape designation.

5. Label the top of steel elevation for each beam or indicate on the drawing as a note.

6. Complete the plan by adding dimensions, notes, connection detail designations and

a North arrow.