Safe Load Calculator (Platform structure dimensions for steel beams)
The following tables can be used to ensure the steel dimensions of the supporting structure are
adequate for the GMA to be used.
Minimum required beam size for SIMPLY CANTILEVERED structure
Length [m]
1
1.5
Universal Columns
100 UC 14
100 UC 14
Universal beams
150 UB 14
150 UB 14
Parallel Flange Channel
100 PFC
150 PFC
Un-equal angle
125x75 UA 6
150x90 UA 12
Rectangular hollow section
100 x 50 x 5
150 x 50 x 5
Square hollow section
100 X 5
100 X 5
Length [m]
5
5.5
Universal Columns
200 UC 46
250 UC 72.9
Universal beams
310 UB 32
360 UB 44
Parallel Flange Channel
380 PFC
380 PFC
Un-equal angle
~
~
Rectangular hollow section
~
~
Square hollow section
250 x 6
~
Length [m]
9
9.5
Universal Columns
310 UC 118
310 UC 118
Universal beams
610 UB 101
610 UB 101
Parallel Flange Channel
~
~
Un-equal angle
~
~
Rectangular hollow section
~
~
Square hollow section
~
~
Minimum required beam size for SIMPLY SUPPORTED structure
Length [m]
1
1.5
Universal Columns
100 UC 14
100 UC 14
Universal beams
150 UB 14
150 UB 14
Parallel Flange Channel
100 PFC
100 PFC
Un-equal angle
125x75 UA 6
125x75 UA 6
Rectangular hollow section
100 x 50 x 6
100 x 50 x 6
Square hollow section
100 X 6
100 X 6
Length [m]
5
5.5
Universal Columns
150 UC 23
150 UC 23
Universal beams
200 UB 22
200 UB 22
Parallel Flange Channel
150 PFC
200 PFC
Un-equal angle
~
~
Rectangular hollow section
150 x 100 x 6
250 x 150 x 6
Square hollow section
150 x 5
150 x 5
Length [m]
9
9.5
Universal Columns
200 UC 46.2
200 UC 46.2
Universal beams
310 UB 32
310 UB 32
Parallel Flange Channel
300PFC
300PFC
Un-equal angle
~
~
Rectangular hollow section
250 x 150 x 6
250 x 150 x 6
Square hollow section
250 X 6
250 X 6
Assumptions:
1.
Maximum floor width = 1200 mm
2.
The GMA sits, and is positioned so as to transfer load through 2 beams.
3.
All materials are Grade 300 Mpa or better (AS3678 & AS1163)
4.
Floor is fully loaded at 2.5 Kpa (typical design load) - Is equivalent to 255 kg per m^2
5.
Floor mesh and handrails considered to be approx 50 kg per square metre.
6.
A 1.25x factor has been applied to the loads, for error in estimations of operators.
7.
It's assumed the beams are full restrained, buckling has not been considered.
8.
15kN fall arrest anchorage load has been used to one side. This means 2 anchorages can
be used on the same device on either side.
2
2.5
3
3.5
150 UC 23
150 UC 23
150 UC 23
200 UC 46
150 UB 14
200 UB 18
200 UB 18
250 UB 25
150 PFC
150 PFC
200 PFC
250 PFC
~
~
~
~
200 x 100 x 5
200 x 100 x 5
200 x 100 x 5
250 x 150 x 9
150 x 5
150 x 5
200 x 5
200 x 5
6
6.5
7
7.5
250 UC 72.9
250 UC 72.9
250 UC 72.9
310 UC 118
360 UB 44
360 UB 44
410 UB 53
410 UB 53
380 PFC
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
10
10.5
11
11.5
310 UC 118
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
2
2.5
3
3.5
100 UC 14
100 UC 14
100 UC 14
100 UC 14
150 UB 14
150 UB 14
150 UB 14
150 UB 14
100 PFC
100 PFC
150 PFC
150 PFC
125x75 UA 6
125x75 UA 6
125x75 UA 6
125x75 UA 8
100 x 50 x 6
100 x 50 x 6
150 x 100 x 6
150 x 100 x 6
100 X 6
100 X 6
100 X 6
100 X 6
6
6.5
7
7.5
150 UC 23
150 UC 30
150 UC 30
150 UC 30
200 UB 22
200 UB 22
200 UB 22
250 UB 25.7
200 PFC
200 PFC
250 PFC
250 PFC
~
~
~
~
250 x 150 x 6
250 x 150 x 6
250 x 150 x 6
250 x 150 x 6
200 x 5
200 x 5
200 x 5
200 x 5
10
10.5
11
11.5
200 UC 46.2
200 UC 46.2
200 UC 59.5
200 UC 59.5
310 UB 32
310 UB 46
310 UB 46
310 UB 46
300PFC
300PFC
380PFC
380PFC
~
~
~
~
250 x 150 x 6
250 x 150 x 6
250 x 150 x 6
250 x 150 x 6
250 X 6
~
~
~
6
3.0 Installation
Gridmesh Anchor Installation:
A. GMA Assembly (GA03):
on steel structure with 1.2m centres, however can be used on narrower structures by
re-orienting the device diagonally (e.g. 900mm or 750mm). The model GMA04 has
4
4.5
200 UC 46
200 UC 46
additional equipment as second lifting point, however the total haul load MUST NOT
250 UB 25
310 UB 32
EXCEED 1.2 tonnes.
250 PFC
250 PFC
~
~
250 x 150 x 9
~
B. System height/clearance:
250 x 6
250 x 6
where the height above the surrounding work area is sufficient to enable a chain
8
8.5
block / block and tackle to be operated in accordance with user instructions. If there is
310 UC 118
310 UC 118
insufficient clearance, DO NOT use the device.
460 UB 67
460 UB 67
~
~
~
~
C. Evaluate System Location:
~
~
determined by the user. Do not place any potential users at risk during the installation
~
~
and operation a completely installed system. Utilise the chart on Page 7 to determine
12
that the structure is suitable for use.
~
~
D. Inspection:
~
~
structure should be visually inspected to confirm that it will hold hauling loads. If there is
~
any doubt about the ability of the system to sustain the loads, the system should not be
~
installed. If necessary, a structural engineer should validate the structural integrity of the
component members.
4
4.5
E. Risk assessment:
150 UC 23
150 UC 23
undertake a risk assessment and prepare a safe work method statement (SWMS) to
150 UB 14
150 UB 14
150 PFC
150 PFC
ensure the equipment use and operation is within the manufacturer guidelines and the
125x75 UA 12
~
operating requirements of the site.
150 x 100 x 6
150 x 100 x 6
150 x 5
150 x 5
8
8.5
150 UC 37.2
200 UC 46.2
Steps for Installation:
250 UB 25.7
310 UB 32
250 PFC
250 PFC
1. Using the storage bag, carry the Gridmesh
~
~
250 x 150 x 6
250 x 150 x 6
Anchor kit to the desired location. Ideally there
250 X 6
250 X 6
will be a user at the top of the structure to set the
12
anchorage on the mesh and a user below the
200 UC 59.5
mesh to arrange connection to the equipment
310 UB 46
from below.
380PFC
~
250 x 150 x 6
~
The Gridmesh Anchor assembly is intended to be used
The Gridmesh Anchor should be located on a structure
The location of the Gridmesh Anchor(s) must be
Before installing the Gridmesh Anchor on the mesh, both the mesh and its
Prior to any job being undertaken, it is recommended that the user
7
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