Random Questions Flashcards
What is the typical Human Comfort in Winter and Summer? Also, what is the typical tolerable humidity?
Winter: 63-71 degrees
Summer: 66-75 degrees
Tolerable Humidity 30-60%
What is the difference between a flat-plate and a flat-slab roof?
The flat plate is a two-way reinforced concrete framing system utilizing a slab of uniform thickness, the simplest of structural shapes. The flat slab is a two-way reinforced structural system that includes either drop panels or column capitals at columns to resist heavier loads and thus permit longer spans.
What are the min. and max arch spans for Wood, concrete and steel?
Wood: 50’-240’
Concrete: 20’- 320’
Steel: 50’-500’
Trusses: What is the typ depth to span ratio?q
1:10-1:20
What is the typ span of a Truss and what is the average spacing.?
Typ. Trusses span 40’-200’ and typ. spacing is 10’-40’ OC
Residential and light commercial trusses are smaller. What the the material, size and spacing for these?
2x 4 or 2x 6 members spaced at 24” oc
What is the typical weight for Timber, Steel, Concrete?
7-10 lb/sf Timber, 15-20 lbs/sf Steel, 15–200 lbs/sf for concrete or masonry construction.
How much should the ground surrounding a building slope away? Name the min slope.
1/4”/ft
Note: Aggregate shall not be larger than 1/3 of the slab thickness or three quarters of the min. space between reinforcing bars, whichever is smaller.
A
What is the size of a no. 4 rebar?
.5” (1/2”)
When is epoxy coated rebar typ. used?
Epoxy Coated rebar are used when the concrete will be exposed to chlorides (salts), The epoxy helps the steel not corrode from the salts.
What are the specified dimensions of modular brick?
7 5/8” long x 3 5/8” thick x 2 1/4” high (3 brick courses plus three 3/8” mortar joints = 8”) Note the length of the brick to receive 3/8” mortar will = 8” as well.
What are small wire supports that help to keep rebar a specified distance from outside of the concrete and help ensure adequate concrete cover?
Chairs
What technique is used to have a slip resistant concrete floor?
Broom Finish. - Float Finish is a rough finish meant for outdoor surfaces or indoor slab that will be covered with carpet or tile. The trowled finished are very smooth and can be sealed and painted for a finish floor or for the installation on VCT.
What mortar should be specified for an exterior application below grade?
Type S mortar (Type M or N is best for exterior application above grade and Type O is used for interior and protected exterior non load bearing walls.
What mortar joint is not recommended for exterior use?
Raked (Re pointing is fixing the mortar joints)
What type of rock is limestone?
Sedimentary (brownstone and sandstone are sedimentary as well)
Which type of lockset is most secure?
Mortise
What does the 32/16 numbers mean when ref. plywood sheathing?
32 is the number of inches used to span rafters (rafters spaced at 32” oc) and can be used for joists spaced 16” on center.
This designation also certifies that this plywood meets the standard of Engineered Wood Association.
What is embodied energy?
The sum of all energy required to extract, process, deliver and install materials needed to construct a building.
What report are almost all US embodied energy applications based on?
Energy Use for Building Construction report written in 1967.
What are three different methods of measuring embodied energy in a historical building?
- Concept Model. - Gives rough estimates
- Inventory Model - More accurate then concept model
- Survey Model - most of the embodied energy is in the architectural materials.
What is half timbering?
A half-timbered building has exposed wood framing. The spaces between the wooden timbers are filled with plaster, brick, or stone.
Name the Types of Fires
Type A - Wood and Paper
Type B - Gases, Grease
Type C - Electrical
Type D - Combustible Metal
