PROJECT SECTION 1

TITLE welded lifting lug DATE 08/20/14

FILE welded_connection_1.xls TIME 9:12 PM

DESCRIPTION

Note: The lifting lug shown above is used in lifting pipes for placement in the shaft of the water filtration plant.

Pipe wall thicknesses vary between 32 mm and 12 mm with variation in pipe weights. For this application it will be assumed that

the maximum force is as shown above and acts on the maximum pipe wall thickness.

INPUT

performance factor phiw = 0.67

load factor lf = 1.4

weld size ( leg ) ws = 10 mm

lug thickness tlug = 25 mm

lug length llength= 300 mm

wall thickness twall = 32 mm

applied force Vf = 212 kN

ultimate plate strength Fu = 0.45 kN/mm2

ultimate electrode strength Xu = 0.48 kN/mm2

angle of axis force/weld line theta = 45 degree

CALCULATIONS

min. plate thickness t = MIN(tlug,twall) = 25 mm

cross section plate Am = t*wlength = 15000 mm2

weld length wlength= llength*2 = 600 mm

cross section weld Aw = ws*wlength = 6000 mm2

shear resistance base metal Vrfb = 0.67*phiw*Am*Fu = 3030.1 kN $13.13.2.2

shear resistance weld Vrfw = 0.67*phiw*Aw*Xu*(1+.5*SIN(RADIANS(30))^1.5)= 1521.4 kN $13.13.2.2

resulting shear resistance Vrf = MIN(Vrfb,Vrfw) = 1521.4 kN $13.13.2.2

design efficiency (<1 = o.k.) de = Vrf/(Vf*lf) = 5.1

Engineering Calculation Template

Manual

INTRODUCTION

1.

2. Key functions:

- set up formulae

- page setup

HOW TO USE

[0]

[1] Use the styles as in sheet 'sample' to fill in title, logo, etc.

[2] Define variables, equations, units. Make sure not to use cell locations as variable names!

[3]

SHEET STRUCTURE

Ranges:

Column A: section descriptions

Column B: variable/formula description

Column C: variable name, to be referenced in formulae

Column D, F: equal sign

Column E: formulae

Column G: variable values or formula results

Column H: units

number of rows used: cell J1

calculation contents: from row 15

MACRO DESCRIPTIONS

formatted

setWidth

CREDITS

Adjust column widths so that it looks like that in sheet 'sample'.

This template is first created by Mr. Michael Gedig using the ideas from Dr. S. F. Stiemer's and

Mr. David S.K. "auto123.wks". Mr. Ye Zhou got his hands on it and further improved it a bit.

This template provides necessary macros to build up engineering calculations for quick re-calc

and clear presentation.

Save this file first with another appropriate name. Ensure this file is put in the same directory as

your newly saved file.

Use macro 'formatted' to calculate the defined formulae. Bring up a list of macro by ALT-F8.

validate and calculate all the variables and formulae. All variable referenced in the formulae have

to be defined in the same sheet. The name of variable cannot duplicate the 'reserved words' of