The phrase "several codes" is grammatically correct and can be used in written English.
It is typically used to refer to multiple codes or sets of instructions. Example: The software requires users to enter several codes in order to access different levels of security.
The experimental results were compared with the predicted prestress losses using methods from several codes.
Several codes propose to use UHS as the basis for determining the seismic design base shear.
It is quite common within many markets to use several codes in conjunction with one another and it is not uncommon that specifications call for sections taken from several codes, which makes compliance by manufacturers complex and uneconomical.
Several Codes and Design Guides consider the sudden column removal approach as their principal method for progressive collapse assessment.
Widely accepted design criteria, however, are not available — although several design rules are provided in several Codes.
The comparative study proves the superior performance of the GEP model compared to the expressions developed in several codes of practice.
This paper presents the LGP algorithm, with several code validations.
Lastly, several coding changes over the period under study are worth noting.
We explain how several code suppliers, coordinated by a system integrator, can independently generate different parts of the distributed software.
Noles was guilty of several Code violations, including the worst one of all: he threw intentionally at Brett's head.
Based on sequence similarities within the coding sequence and similarities in the 5' and 3' UTR, several coding sequences were named as alleles from the same gene.
