Security Escort
Equipment estimation, location accuracy and receiver location | en
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Robert Bosch (SEA) Pte Ltd
Training Manual
2017.08 | V2.18.1.0 | DOC
3.2
Pre-bid equipment estimation
The pre-bid equipment estimation is performed prior to bidding the installation. At this point,
it must be determined what type of coverage is desired, and where the coverage will be
required. For example, the amount of equipment required for a full-coverage (indoor and
outdoor) system in a multi-building application is greater than an installation that requires
outdoor only coverage. The customer should be consulted, and the areas of most concern
should be given special consideration.
3.2.1
Initial equipment estimate
Number of indoor receivers
To estimate the number of indoor receivers, first read Indoor receiver installation. Assume the
receivers are placed on a grid with a maximum spacing of 25 m (80 ft) between receivers for
standard construction. In multi-floor applications the receivers on each floor must be placed
directly above the receivers on the floor below (this is required for proper floor-to-floor
location).
For example, to determine the number of receivers required to protect a building of standard
construction of 60 m x 30 m (200 ft x 100 ft) and four floors:
1.
To determine the number of receivers in each direction, divide each dimension of the
building by 25 m (80 ft), drop the remainder, and add 1. For example:
–
60 m/25 m = 2.4, becomes 2, add 1 = 3
(200 ft/80 ft = 2.5, becomes 2, add 1 = 3)
–
30 m/25 m =1.2, becomes 1, add 1 = 2
(100 ft/80 ft =1.25, becomes 1, add 1 = 2)
2.
To determine the number of receivers required per floor, multiply the number of receivers
in one direction by the number of receivers in the other direction.
(3 x 2 =
6
) 6 receivers per floor.
3.
To determine the total number of receivers, multiply the number of receivers per floor by
the number of floors.
(6 x 4 =
24
) 24 receivers for the building.
Figure 3.2: Determining the Number of Indoor Receivers Required
1 Receivers (6)
