4910.1

TABLE OF CONTENTS

Page

CHAPTER 4 BUILDING DESIGN

400 GENERAL
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4-3

400-1 Building Design
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401 SPACE PLANNING
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4-3

401-1 Non-Residential Space
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401-2 Bath
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4-3

402 ACCESS AND CIRCULATION
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-- 4-3

402-1 Doors and Openings
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402-2 Handrails and Railings
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402-3 Elevators
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4-4

403 VENTILATION
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4-5

403-1 Crawl and Attic Spaces
\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-- 4-5

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4910.1

CHAPTER 4

BUILDING DESIGN

400 GENERAL

400-1 BUILDING DESIGN

Building design shall provide for ease of circulation and

housekeeping, visual and auditory privacy, accident

protection, accessory services and economy in maintenance

and use of space.

401 SPACE PLANNING

401-1 NON-RESIDENTIAL SPACES

Management and maintenance space shall be provided

commensurate with the number of living units served.

Also, space shall be provided for necessary staff where

social services are provided.

401-2 BATHS

401-2.1 Every living unit shall be provided with a water closet,

lavatory and a bathtub or shower.

401-2.2 Shower compartment floors and walls shall be finished

with a wear resistant and non-absorbent surface to a

height of not less than 6 ft. above the floor.

402 ACCESS AND CIRCULATION

402-1 DOORS AND OPENINGS

402-1.1 Living Unit Doors

Living unit entrance doors shall be side-hinged doors not

less than 3 ft. in width and 6 ft. 8 in. in height.

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4910.1

402-1.1 Living Unit Doors - Continued

402-1.2 Locking devices at doors and windows shall be as follows:

a\. Each exterior doorway and each doorway leading to

garage areas, common hallways, terraces, balconies,

or other areas affording easy access to the

premises shall be protected by a door which, if not

a sliding door, shall be equipped with a deadlock

using either an interlocking vertical bolt and

striker, a minimum of 1.2 in. throw dead bolt or a

minimum 1/2 in. throw self-locking dead latch.

Locks shall not require the use of a key for

operation from the inside.

b\. All sliding doors, first floor and basement windows

and windows opening onto stairways, fire escapes,

porches, terraces, balconies or other areas

affording easy access to the premises shall be

equipped with a locking device. A sliding door

used as a main or service entrance shall be

equipped with a keyed locking device.

402-2 HANDRAILS AND RAILINGS

Required railings shall have a minimum height of 36

in. and balusters shall be designed to prevent the

passage of a spherical object having a diameter of

6 in.

402-3 ELEVATORS

402-3.1 Service Required

a\. Elevators shall be provided in buildings of:

\(1\) Five or more stories;

\(2\) Four stories where deemed necessary by

the HUD Field Office to satisfy market

considerations;

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4910.1

402.3-2 Service or Combination Elevators

In elevator type buildings, at least one of the

elevators shall have a minimum capacity of 2500 lbs

and minimum size as required for service elevators

under 614-1.

403 VENTILATION

403-1 CRAWL AND ATTIC SPACE

403-1.1 Crawl Space

a\. The space between the bottom of the floor

joists and the earth under any building

(except such space as is occupied by a

basement or cellar) shall be provided with a

sufficient number of ventilating openings

through foundation walls or exterior walls to

ensure ample ventilation. Such openings shall

be covered with a corrosion-resistant wire

mesh with a mesh size not greater than 1/2 in.

nor less than 1/4 in. in any dimension. The

minimum net area of ventilating openings shall

not be less than 1 sq. ft. for each 150 sq.

ft. of crawl space area.

403-1.1 Crawl Space - Continued

One ventilating opening shall be within 3 ft. of

each corner of each building where such openings

are required.

Exceptions: (1) Ventilation openings may be

vented to the interior of

buildings where warranted by

climatic conditions; and

\(2\) The total area of ventilation

openings may be reduced to

1/1500 of the under floor area

where the ground surface is

treated with an acceptable

vapor retarder material, and

one such ventilation opening is

within 3 ft. of each corner of

said building. The vents may

have operable louvers.

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4910.1

b\. The under floor grade shall be cleaned of all

vegetation and organic material.

403-1.2 Attic Space

a\. Cross ventilation shall be provided for each

separate space. Ventilation openings shall be

protected against the entrance of rain and

snow.

b\. The ratio of the total net free ventilation

area to the area of ceiling shall be not less

than 1/150, except that the ratio may be 1/300

if:

\(1\) A vapor retarder having a transmission

rate not exceeding one perm is installed

on the warm side of the ceiling;

\(2\) Between 25 and 50 percent of the required

ventilating area is provided by vents

located in the eaves or cornices with the

balance of the required ventilation

provided by ventilators located at least

3\'-0\" above the vents in the eaves or

cornices; or

\(3\) The attic space is accessible and

suitable for future habitable rooms or

walled-off storage spaces have at least

50% of the required ventilating area

located in the upper part of the

ventilated spaces as near the high point

of the roof as practicable and above the

probable level of any future ceiling.

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