BDC - Windows & Openings

Question 1

what is a flush and sash doors?

Answer 1

flush: smooth flat door\
Sash: with glazing

Question 2

what are standared HM door sizes?

Answer 2

2’0”, 2’4”, 2’6”, 2’8”, 3’, 3’4”, 3’6”, 3’8” & 4’

Question 3

what are th 4 basic types of hinges?

Answer 3

FULL MORTISE:Typ hinge, both leafs are recessed in the frame
HALF MORTISE: one leaf is mounted on the surface of the door the other recessed.
FULL SURFACE:the entire hinge is surface mounted.
HALF SURFACE:

Question 4

how are hinges sized?

Answer 4

x # where the 1st number length of the barrel of the hinge and the second is the width

Question 5

where are ball bearing hinges req’d?

Answer 5

rated assemblies and doors w/ closers

Question 6

what are the 4 types latches & locks?

Answer 6

MORTISE: bored out, typ in commercial construction
PRE-ASSEMBLED:
BORED: (seen in typ interior residential construction)
INTERCONNECTED:

Question 7

in door locks what is the back set?

Answer 7

its the distance from the end of the door to the CL of the lock, typ 2 3/4”

Question 8

in corrosive environments what must the door hardware be made out of?

Answer 8

Stainless STeel or bronze

Question 9

when is panic hardware req’d?

Answer 9

certain occupancies (ie education and assembly) w/ an occupant load over 50.

Question 10

what is the mounting height of door hardware/.

Answer 10

34” to 48”

Question 11

what is the fire rating of wire glass?

Answer 11

45min

Question 12

are fire doors req’d to be self latching?

Answer 12

yes

Question 13

a fire door is req’d to be self closing?

Answer 13

yes, or a hold open thats attached to a fire alarm system.

Question 14

what is float glass?

Answer 14

the most common. Made by pouring molten glass onto a bed of molten tin & allowing it to slowly cool. Also called annealed glass

Question 15

what is heat strengthened glass?

Answer 15

This glass is produced by heating glass to 1100 deg and slowlu cooling it.

Question 16

what is tempered glass?

Answer 16

temp glass is produced by subjecting annealed glass to special heat treatment to ~1150 deg & then quickly cooled.

Question 17

what is glass shading coefficient?/.

Answer 17

Its the ratio of the solar heat gain via a specific fenestration to the solar gain threw a regulate 1/8” clear glass

Question 18

what is the door rating if the access corridor is 1hr?

Answer 18

20,

Question 19

what is the door rating if the fire partition is 1 hr?

Answer 19

45 m

Question 20

what is the door rating if the fire barrier is 1hr

Answer 20

1hr

Question 21

what is the door rating fire walls or barriers of 4hr?

Answer 21

3hr

Question 22

what is the door rating if the exterior wall is 3 hr?

Answer 22

90m

Question 23

what is the door rating if the exterior wall is 2hr?

Answer 23

90m

Question 24

what is the door rating if the exterior wall is rated 1hr?

Answer 24

45m