Building drawings checklist : electrical drawings for housing

Publisher’s version / Version de l'éditeur: Building Practice Note, 1983-02-01

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Building drawings checklist : electrical drawings for housing

Strelka, C. S.

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Ref

1

Ber

THl

BUILDING

O t t a w a , February 1983

BUILDING

DRAWINGS

_EOUSING

by

ANAtYIIEU

NATIONAL RES~ABCX

CouNca

D I V I S I O N

OF BUILDING

BUILDING DRAWINGS CHECKLIST: KLECTRICAL DRAWINGS FOR HOUSING

C.S. STREIXA

Ottawa

PREFACE

PART I

CHECKING DIMENSIONS AND UNITS

SCALES

SITE PLAN

FLOOR

PLANS

ROOF PLAN

DETAILED

DISTRIBUTIOB DIAGRAMS AND SCHMkTICS

PART II

PAGE

DLSTRXBUTION

DIAGRAMS

PREFACE

This drawlrig checklfst i s the fourth of the aeries,

complementing the B u i l d t n g Pfactrce N o t e 29, B u i l d i n g Drawings Checklist: Architectural Drawings, Note 39, Building Drawings Checklist : Structural D r a w i n g s and Note 40, Building Drawings

Checklist: Mechauical Drawings.

It

for

supervision.

Since thls list is a general one,

Zt

should prove

or

by and available from the D i v i s i o n of Building Research, National

Research Council of Canada).

Part I of this c h e c k l i s t serves as a reminder of various items

t o the person checkfng the drawings. The matter of "crispness of drawings "

,

plans drawn at _1: 100 s c a l e .

Part I1 presenfs, in tabulated

form, a

process of reprinting chedr sets and/or establishing permanent: records of all verifications and approvals. They can also supplement computer- a i d e d d e s i g n (CAD) software.

The architect must crLtically review h i s own work before releasing it to a contractor for execution.

It

responsibility, an obligation to _{h i s client a d the key to a good}

business reputation,

The author wishes t o thank Mr. F.W. Steel of DBR for reviewing t h e manuscript and of€e.ring wny u s e f t l l suggestions.

1 . C H E C m G

DIMENSIONS

UMITS

The diensioniing method should be consistent, meticulaus and

i n _accordance

_with

Building Drawfqgs.

2.1 Linear dimensions should be expressed

f n millimetres

(m)

on

in drafting,

omitted

if

are

a) a note including the unit used is dlspl&d in a conspicuous place o n the drawing sheet;

b) all linear dimensions including those for spot l e v e l s and land elevation contours are given in one dimensf onlng u n i t o n 1 y

.

the

f e - g , ,

s h m in

(e.g., 1.235, 1.000).

1.2 Area &mewions should be expressed in:

a) hectares (ha) for areas an survey plans, plans of subdivisions

and lot p l a n s t o three decimals (e.g,, 1.234

ha)

b) square metres (m2) for floor areas o f rooms, large glass panes, t o t:wa

decimals

16).

c) square dllimetres (arm2

1

for

of wires,

ao deciraals.

S y m h l s of these units MUST

ALWAYS BE

appropr l a t e .

l - 3 Volume dimensions should be expressed

in:

I

a ) cubic metres <m3) for air end fluid d i s r r i h t l o n in large quantities.

b) litres (L) for volumes pertaining to containers of f l u i d s or

gases. I

1.4 _{UNITS FOR USE IN ELEmRSCAL ENGINEERING CALC[TLATXOMS}

Quantity

Sl Reconrmended Unit Unit

Symbol Symbol Name T y p i c a l A p p l i c a t i o n

Electric current (intensity) h kA ki loampere

A

C

PC

The voltage on a unit with

capacltstlve type charac- teristfcs my be related to

the amount of charge present (e-g., electro- s t a t i c precipitators).

Storage battery capacities.

Electric potential, p o t e n t i a l difference, electromotive force kV kilovolt mV m i l l i v o l t y V d c r o v o l t

The _{electrlc field strength}

g i v e s the potential gradi-

ent at p o i n t s in space.

b y be used to calculate ar test electrical

parameters such as dielec-

tric strength.

I

Electric f i s l d strength

V kV/m kilovolt per metre m ~ / m m i l l i v o l t per metre

pV/m microvolt per metre

Capacitance F farad d? d l l f f a r a d DF dcrofarad nF nanofarad pF picofarad ~ l e c t r o n i c components. E l e c t r i c a l design and p e r forman& calcdators.

Current ampere per square Design of cross-sectional d e n s i t y meter area of electrical conduc-

kA/m2 kiloampere p e r square tor. meter

Quantity

SI Recommended U n i t U n i t

Symbol Symbol Naare Typical Application

Magnetic field A/m A/m ampere per metre Used

in

strength netic circuitry such as

kA/m

~ lf iers i and general

cores.

Magne tomo t ive A force, magnet i d potential dLf f erence kiloampere ampere millimpre Used i n calculatfans involved in nragnetfc circuits. Impedance, reactance

The _{design of electrical}

motors, geaerat ors and

trahsmissf 6n lines. Active Power

W

W

PW

Apparent

Power

mV-A millivoLt ampere pV-A microvolt ampere

Conductance, a d d ttsnce, susceptance k R - m ktlohm metre f l - m ohmmetre d a r n m i l l i o b metre pnmrn microohm metre

ni2.m naaoohm metre

T+e design of e l e c t r i -

cal d e v i c e s with

ff n i t e res is Lance such

as =tors, generators,

heaters.

- - -

SI Recomnended U n i t Unit

Symbol Symbol Ham T y p i c a l Application

Conductivity S /a kS/m kilosiemens per The design of electrical

metre devices with finite

s/m

A

vS/m dcroatemens p e r for measuring water metre qua11 ty

.

Resistance

Re Luc tance H-I till reciprocal henry Design of mbtors and generators.

Permeance henry

Permeability ~ / m H/m henry per raeter Gives the relationship pH/m microhenry pee between magnetic f l u x

meter density and magnetic

f i l m

meter Flux of magnetic induction, magnetic f l u x Magnetic flux density, magnetic induction T

T

nT

Reeommemded Unit

Quantity

Unit

Symbol Symbol Name Typical A p p l i c a t i o n

Self

-

Used in analysis

and

calculations involving

transformers.

2 . SCALES

S

Design Sketch and prelimi-

nary df awing6 Working drawing Location drawings Rlock plan Site plan General location drawinga Component range drawings Assembly drawings Component detail drawings

Scales w i l l

erence be given to those used in the w o r k i n g drawinj

s tage.

Scale w i l l vary according

t o maps used as reference.

The preferred scale is 1 : S I

*

Building Drawings, The recommended range of scales may be extended to botl s i d e s , provided that the new scale

can

SITE

PLAW

Show all lot lines,

lot designatfon

Inilicate lot orientation by north arrow.

Show in o u t l i n e the proposed b u i l d l n g and a l l other structures

on the property: driveways, sidewalks, parking areas, free- standing sLgns.

Indieate existing service lines (electridal, telephone, cable TV) overhead or buried. Show existing poles if any.

Show connecttons (overhead or buried) from extating service

l i n e s t o building, I n d i c a t e location where services enter the building. Co-ordinate with architectural, structural and m e &an& cal drawf ags

.

Show new poles or trenches .for coanectlng services.

I n d i c a t e location of exterLor traasformer, if any, for pad- or

pole-mounted trsnsEormer. Go-ordinate pad deaign requirements

with structural drawings.

Show location and type of exterior lightfng fixtures (lighting

on p o l e s , mounted on building, area floodlighting).

Show locatton aud service to car heater plugs.

3.10 Show location and type of photocells governing lighting, or

barrier or door opening devices.

Indicate easements for municipal u t i l i t y services.

3.12 For convenience, p l a c e legend on first drawing of the set and place d e t a i l s an the f i r s t drawing to

which they

FLOOR P U N S

Check for proper location of a l l walls, partitions and columns,

accardfug to latest issued architectural drawings. Outline in

thin line. Show a l l doors and windows. Show grldXines,

Check a l l

coding

Locate points of Incoming electrfcal, telephone, cable

TV

security services when applicable,

I n d i c a t e building or indivtdual metering devices; show p a u e l l o c a t i o n and identification.

4.5 Locate furnace; i n d i c a t e t y p e and required service.

4 . 6 Locate laundry equtpment; indfcate type and required service.

4.7 Locate hot water heaters; indicate type, capacity and required servtce.

4.8 _{Locate transformer. Check for ftreproofing a d ventilation of}

transformer vault. Co-ordinate with archltectural, structural and mechanical drawings.

4.9 Check the location o f t h e emergenqgencratorwhenrepuired. I n d i c a t e capacity, fuel supply, ventilation, coolfag, transfer switch.

Check electrical service requ5rements for elevator machine room.

At _{t y p i c a l f loars, shav location of elevator control panels.}

Check distribution of w a l l receptacles; i n d i c a t e use.

Check location of switches; indicate which fixture they control;

show panel and circuit number.

Show location of _{lighting fixtures; indicate type.}

Check location and size of _{electrical beating units; indicate}

type and heating capacity.

Check location of e l e c t r i c thermostats. Co-ordinate w i t h

mechanical drawings.

Show location of all motors. Indicate use, type, power, panel and c i r c u i t number or starter number.

Check for emergency lighting.

Check fire alarm system: location of required p u l l stations,

smoke/heat d e t e c t o r s , alarm bells.

Check connections to flow

switches

a l l kitchen

Co-ordinate d t h mechanical drawtngs.

Locate &ndividual telephone stations. Locate cable TV outlets.

Locate d o o r b e l l or annunciator panel, voice -communication s c a t ions, electrical door o p e n f ng devlces, e x i t signs.

Indlcate sccurfty equipment: sc;mnlng cameras, security station and interconnection if required.

4.25

Check for

far

if required.

4.26

section 6 . Detailed Floor Plans) should be s h a m , if p o s s i b l e , on the same floor plan to which they apply.

ROOF PLAN

Indicate in thin l i n e the outline of the roof.

Show penthouses, roof hatches and other parts of building

structure above main roof level.

Show location and wiring d i s t r i b u t i o n t o roof l i g h t i n g fixtures

and electrical receptacles.

Indicate requirements Cwlring, type and capacity of motor) of swing stage w i n d m cleaning equipment, i f any.

Show location and wiring for roof-mbunted

TV

receiving dishes, if any. &-ordinate aupport and anchoring

with structural d r a m a .

Provide electrical service in elevator penthouse (lighting,

ventilating, elevator machine).

Show l o c a t i o n and provide s e r v i c e for ~ c h a n i c a l equipment mounted at roof l e v e l ,

Show location and provide service for closed circuit security cameras, if any.

DETAILED FLOOR PUNS

General

-

plan t o the rest of the building.

Electrical raom/closet

and transformer vault.

6.2.1 Show cable trenches, thefr puLl rings, drainage and covers.

6.2.2 Locate transformer, i n d l c a t e t y p e , grounding, secirrity screen, trausformer oil c o a t a i m n t system (separate from plumbing).

4 - 2 . 3 Show cable raceways and buss ducts.

6.2.4 _{Locate switches, splitters, panels and meter(s).}

6 . 2 . 5 Indicate space lighting, heating and v e n t i l a t i o n of roam.

6.2.6 Show high temperature alarm.

Provide s i n g l e l i n e d i s t r i b u t i o n diagram of wiring in the electrical room/closet and transformer vault.

?a show vertical relation of various equipment in the

electrical room, it is good practice t o supplement a d e t a i l e d

floor

(to scale).

Co-ordinate d t h architectural drawing for s i z e of the -electrical room, openings and f lreproofing.

Co-ordinate with structural drawings for s p e c i a l foundation

and/or anchoring requf remnts oE equipment.

Co-ordimte with uwchaaical drawings

for requirements

Qn

7

DISTRIBUTION

Show the s i n g l e 11- power dgstribution system diagram; check mains disconnect, transforaers and secondary d i s t r l b u t ion, i n d i c a t e type and rating of breakers in secondary switchboard,

stepdowa transformers, s p l i t t e r s and disconnects; i d e n t i f y

panels served. Check for emergency disconnect, transfer switch and distribution.

For t y p 3 c a l floor electrical closet diagram,

show

In

d i s c o n n e c t s of arechanical equipment and elevator. Show

emergency supply t o elevators.

In riser diagraa for power distribution, check the locatfon of disconnects, transforoers, i n d i v i d u a l smterlng d e v f c e s and

pariela, fncluding a l l c a b l e and conduit sizes.

P r o v i d e separate riser diagrams for door release-intercom, telephone, cable TV sys~em, b u i l d i n g security monitoring. Check

for conduit s h e and number of outlets.

Fire alarm system riser diagram must show the quantity and

location of all pull stations, e d t s i g n s , flow switches,

tamper switches, heat/smke detectors,

balance resistors,

b e l l s and v o i c e corprmnication system. Check conduit

size.

-tors

requiring electrical power, check motor/equipWnt

Identification, location, voltage, phase, power, f u l l load current, switch size, fuse rating and type, starter

sfze, p a w l

CHECKHO BY:

CHECKED

BY:

I

I

I