SAFE LOAD TABLES FOR SIMPLE STEEL BEAMS

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15 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

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SAFE LOAD TABLES FOR SIMPLE STEEL BEAMS


Instructions




Look carefully at the two surfaces the ends of the beam will rest on. They must be on
the same level (height) and each surface must be level. If there is any doubt about
whether the surface might crumb
le, crack or yield under the load, place something
strong like a steel plate or a concrete pad on it. Also make sure that it’s not just the
surface that’s strong enough but also the structure underneath it; for example, don’t
support a beam on top a wall i
f there’s a window just below it, or on steel or timber
that’s not strong enough. The following organisations can be contacted for advice
on the strength of the support structure:

Cement and Concrete Institute (
http://cnc
i.org.za
)

Tel (011) 315 0300

Concrete Manufacturers Association (
http://www.cma.org.za
)

Tel: (011) 805 6742



Measure the distance between the centers of the supports (the ‘span’) in meters.



Determine the weight to be
supported (including the weight of the chain block)
accurately, in kilograms.



Use the table to select the beam that can carry the weight for the particular span.
The steel beam MUST be made from grade S355JR steel.



Obtain a beam that is long enough so that

at least 100 mm (10 cm) can lie on the
support surface on each side. Place the beam in position.



Make a brace from flat steel, a small angle or something similar, and attach it to the
top of the beam and to the support surface so that it forms an angle wi
th the vertical
(see the sketch). Attach the brace to the support surface and the top of the beam
with bolts. (Alternatively, use another approach to ensure that the top of the beam
will be prevented from moving sideways, so that the beam will not be able
to roll
over.)



If the weight will hang from the beam as shown in the sketch install the rope or chain
by which the weight will be supported. Use the timber block to protect the beam
from damage. If the weight is to be placed on top of the beam, provide pro
per
supports to prevent the weight and the top of the beam from moving sideways, or
from toppling over.



The weight must only be positioned somewhere in the central third of the beam.



Apply the weight slowly. If anything looks worrisome, stop and think agai
n. Get
advice if you are concerned about anything.



Note that heavy weights can be dangerous, especially if they are in a elevated
position.



You need to be extremely careful, and obey the Occupational Health and Safety
Act.



This note is not intended to repl
ace the structural engineer. If it is a requirement of the
local authority, if there is any complexity, if the load or the span is bigger than in the
tables, or if there is any reason for concern


get the services of a qualified structural
engineer.












Maximum Load [kg]

Span [m]

2

3

4

5

6

IPE Sections

IPE 100


100









IPE 120


150









IPE 140


250

150







IPE 160


350

200







IPE 180

500

300

150





IPE 200

650

400

250





I
-
Sections (Parallel Fla
nge)

203x133x25

1 000

650

400

250

200

254x146x31

1 450

900

600

400

300

305x102x25

600

350







305x165x41

2 000

1 450

950

650

500

356x171x45

2 000

1 550

1 000

700

550



STRONG ENOUGH ROPE
(OR CHAIN) AND HOOK.

AT LEAST 100 mm OF END
OF BEAM TO REST
ON
HARD, SOLID SURFACE;
BOTTOM OF BEAM MUST
NOT BE ABLE TO MOVE
SIDEWAYS.

HARDWOOD BLOCK TO
PROTECT TOP FLANGE.

BRACE ATTACHED TO
TOP OF BEAM AND TO
SUPPORT SURFACE TO
PREVENT SIDEWAYS
MOVEMENT (ROLLING) OF
THE TOP OF THE BEAM.