User Guide
Table Of Contents
- Cambium
- PMP 450 Planning Guide
- Accuracy
- Copyrights
- This document, Cambium products, and 3rd Party Software products described in this document may include or describe copyrighted Cambium and other 3rd Party supplied computer programs stored in semiconductor memories or other media. Laws in the United ...
- Restrictions
- License Agreements
- High Risk Materials
- Safety and regulatory information
- Contents
- List of Figures
- List of Tables
- About This Planning Guide
- PMP support website: http://www.cambiumnetworks.com/support
- Cambium main website: http://www.cambiumnetworks.com/
- Sales enquiries: solutions@cambiumnetworks.com
- Email support: support@cambiumnetworks.com
- Telephone numbers:
- For full list of Cambium support telephone numbers, see:
- http://www.cambiumnetworks.com/support/contact-support
- Address:
- Chapter 1: Planning considerations
- Regulatory planning
- Network migration planning
- Site planning
- Link planning
- Analyzing the RF Environment
- Selecting Sites for Network Elements
- Diagramming Network Layouts
- Grounding and lightning protection
- Configuration options for TDD synchronization
- Data network planning
- Security planning
- Isolating APs from the Internet
- Managing module access by passwords
- Filtering protocols and ports
- Port Lockdown
- Isolating SMs
- Filtering management through Ethernet
- Allowing management from only specified IP addresses
- Configuring management IP by DHCP
- Planning for airlink security
- Planning for RF Telnet Access Control
- Forwarding Downlink PPPoE PADI packets
- Planning for RADIUS integration
- Planning for SNMP security
- Ordering components
- Chapter 2: Legal information
- Cambium Networks end user license agreement
- Acceptance of this agreement
- Definitions
- Grant of license
- Conditions of use
- Title and restrictions
- Confidentiality
- Right to use Cambium’s name
- Transfer
- Updates
- Maintenance
- Disclaimer
- Limitation of liability
- U.S. government
- Term of license
- Governing law
- Assignment
- Survival of provisions
- Entire agreement
- Third party software
- Hardware warranty
- Limit of liability
- Cambium Networks end user license agreement
- Chapter 3: Reference information
PMP 450 Planning Guide
Wind loading
Ensure that the site will not be prone to excessive wind loading.
Antennas and equipment mounted on towers or buildings will subject the mounting structure to significant
lateral forces when there is appreciable wind. Antennas are normally specified by the amount of force (in
pounds) for specific wind strengths. The magnitude of the force depends on both the wind strength and size of
the antenna.
Calculation of lateral force (metric)
The magnitude of the lateral force can be estimated from:
Force (in kilograms) = 0.1045aV
2
Where: Is:
a surface area in square meters
V wind speed in meters per second
The lateral force produced by a single PMP 450 at different wind speeds is shown in Table 27 Lateral force -
metric and Table 28 Lateral force - US.
Table 27 Lateral force - metric
Largest
surface area (square meters)
Lateral force (Kg) at wind speed
(meters per second)
30 40 50 60 70
.066 (AP – 5 GHz, 60 Degree Sector) 6 11 17 25 34
.083 (AP – 5 GHz, 90 Degree Sector) 8 14 22 31 43
.27 (AP – 2.4 GHz, 60 Degree Sector) 25 45 71 102 138
.088 (AP – 3.5 GHz, 90 Degree Sector) 8 14 22 33 45
.088 (AP – 3.6 GHz, 90 Degree Sector) 8 14 22 33 45
.0027 (SM) 0.25 0.45 0.7 1 1.4
1-68
pmp-0047 (March 2014)