Unified Development Ordinance, 25th Supplement, December 2022

Article 1.5. Measurement, Exceptions & General Rules of Applicability | CHAPTER 1. ​INTRODUCTORY PROVISIONS

Single Building Height Method

Pitched Roof

Flat Roof

A

C

Top of Roof

Primary Street

B

B

Top of Roof Parapet Wall

B

B

Elevation B = Applicable building elevation for average grade calculation.

A

C

Street

Height

Height

FORMULA

D

D

D

C

A

PLAN VIEW

Average Grade

Average Grade

Multiple Module Height Method

C

A

2. Average grade shall be determined using one of the following methods: a. Single Building Height Method i. Average grade shall be considered to be average post-development grade above sea level along the building elevation most parallel and closest to the primary street setback. b. Multiple Module Height Method i. As an alternative option to the single building height method, measurement of height for a building can be broken down into two or more building modules each with a separate average grade for the purposes of determining the height in feet and number of stories for the individual modules. ii. Average grade for each module shall be considered to be average post-development grade above sea level along the building module elevation most parallel and closest to the primary street setback.

Primary Street

B

B

B1

Module 1

= Applicable module elevation for Module 1

B1

Street

FORMULA

D

D

C

A

PLAN VIEW

A

C

Primary Street

B

B

= Applicable module elevation for Module 2

B2

Module 2 B2

Street

FORMULA

D

D

C

A

PLAN VIEW

A. SINGLE BUILDING

B. MULTIPLE MODULES

C

A

Primary Street

B

B

B3

Street

Module 1

Height

Module 3

Street

Street

= Applicable module elevation for Module 3

Module 3

B3

Module 2

Height

Height

Height

Street

FORMULA

D

D

C

A

PLAN VIEW

1 – 20 Pub l i s hed De c embe r 2022

Pa r t 10 : Un i f i ed Deve l opmen t Or d i nanc e C i t y o f Ra l e i gh , No r t h Ca r o l i na

Supp. No. 25