BD21/01 Annex D Specific Parameters

Used to input parameters for loading per Annex D: Loading From Vehicles of BD21/01 Annex D. This code is used for traffic on cross girders and transversely spanning slabs.

Setting

Description

Fire Engine

Select the make of fire engine from Table E1 of BD21/01 Annex E as the Type. Specify the Number in Convey to indicate the number of fire engines (all same type) with which to simultaneously load the bridge.

Nominal Vehicle

Select the nominal vehicle Type from Tables D1 and D2 of BD21/01 Annex D.

Vehicle nomenclature:

BD21/01_WT[_#][dir]

Where:

Parameter	Description
WT	Either the vehicle gross weight value (Table D1 vehciles) or the vehicle reference (Table D2 vehicles).
#	Separate id number for vehicles which are listed more than once in the table.
div	a or b signifies a vehicle in which the W2 and W3 loads have exchanged position.

Specify the Number of vehicles to indicate the number of nominal vehicles (all same type) with which to simultaneously load the bridge. Specify an Axle Impact Factor for use with a single vehicle per Cl.D.3(a).